User Manual
Contents
1. 11 12 14 14 14 i 5 p35 SIFE 17 AJ sJ 18 18 18 18 20 21 21 24 24 24 28 SIJ 38 38 GXP 2000 User Manual Grandstream Networks Inc 6 FIRMWARE UPGRADE 40 6 1 UPGRADE THROUGH HTTP 40 6 2 UPGRADE THROUGH TFTP 40 7 RESTORE FACTORY DEFAULT SETTING 42 GXP 2000 User Manual Grandstream Networks Inc 1 Welcome Thank you for purchasing Grandstream award winning GXP 2000 Enterprise IP Phone You made an excellent choice and we hope you will enjoy all its capabilities Grandstream s award wining GXP 2000 SIP IP phone is the innovative enterprise IP telephone that offer a rich set of functionality and superb sound quality They are fully compatible with SIP industry standard and can interoperate with many other SIP compliant devices and software on the market Grandstream GXP 2000 has been awarded the Best of Show product in 2005 Internet Telephony Conference and Expo This document is subject to changes without notice The latest electronic version of this user manual is available for download from the following location http www grandstream com user_manuals GXP2000 pdf CONFERENCE amp EXPO GXP 2000 User Manual Grandstream Networks Inc 2 Installation 2 1 What is Included in the Package The GXP 2000 phone package contains 1 One GXP 2000 Main Case 2 One Handset 3 One Phone Cord 4 One Universal Power Adap2. Via HTTP Server Automatic HTTP Upgrade DTMF Payload Type NTP server This parameter when set to Yes will force random generation of both the local SIP and RTP ports This is usually necessary when multiple GXP 2000s are behind the same NAT This parameter specifies how often the GXP 2000 sends a blank UDP packet to the SIP server in order to keep the hole on the NAT open Default is 20 seconds NAT IP address used in SIP SDP message Default is blank IP address or Domain name of the STUN server This radio button will enable GXP 2000 to download firmware or configuration file through either TFTP or HTTP This is the IP address of the configured TFTP server If selected and it is non zero or not blank the GXP 2000 will attempt to retrieve new configuration file or new code image from the specified TFTP server at boot time It will make up to 3 attempts before timeout and then it will start the boot process using the existing code image in the Flash memory If a TFTP server is configured and a new code image is retrieved the new downloaded image will be verified and then saved into the Flash memory Note Please do NOT interrupt the TFTP upgrade process especially the power supply as this will damage the device Depending on the network environment this process can take up to 15 or 20 minutes The URL for the HTTP server used for firmware upgrade and configuration via HTTP For example http provisioning mycomp
3. or off hook and pick up handset press or t to adjust the speakerphone or phone volume 5 2 Configuration with Web Browser GXP 2000 series IP phone has an embedded Web server that will respond to HTTP GET POST requests It also has embedded HTML pages that allow a user to configure the IP phone through a Web browser such as Microsoft s IE 5 2 1 Access the Web Configuration Menu The IP Phone Web Configuration Menu can be accessed by the following URI http Phone IP Address where the Phone IP Address is the IP address of the phone There are two ways to retrieve this IP address from the phone 1 When the phone is on hook press Menu button and then the browsing arrow keys to check 3 IP Address 2 When the phone is off hook or in speakerphone mode press Menu button NOTE e To type IP address into browser to get into the configuration page please strip out the leading 0 as the browser will parse in octet e g if the IP address is 192 168 001 014 please type in 192 168 1 14 5 2 2 End User Configuration Once this HTTP request is entered and sent from a Web browser the GXP 2000 will respond with the following login screen GXP 2000 User Manual Grandstream Networks Inc Password Login The password is case sensitive with maximum length of 25 characters and the factory default password for End User is 123 After a correct password is entered in the login screen the
4. Admin Password Silence Suppression Layer 3 QoS Layer 2 QoS No Key Entry Timeout Use as Send Key Voice Frames per TX Local RTP port Administrator password Only administrator can configure the Advanced Settings page Password field is purposely left blank for security reason after clicking update and saved The maximum password length is 25 characters This controls the silence suppression VAD feature of G723 and G729 If set to Yes when a silence is detected small quantity of VAD packets instead of audio packets will be sent during the period of no talking If set to No this feature is disabled This field defines the layer 3 QoS parameter which can be the value used for IP Precedence or Diff Serv or MPLS Default value is 48 This contains the value used for layer 2 VLAN tag Default setting is blank Default is 4 seconds This parameter allows users to configure the key to be used as the Send or Dial key If set to Yes pressing this key will immediately trigger the sending of dialed string collected so far In this case this key is essentially equivalent to the Re Dial key If set to No this key will then be included as part of the dial string to be sent out This field contains the number of voice frames to be transmitted in a single packet When setting this value the user should be aware of the requested packet time used in SDP message
5. GAPS server in the TFTP server field of the configuration screen or enter the HTTP provisioning Server URL in the HTTP Upgrade Server field Then reboot the GXP 2000 For details on how GAPS works please refer to the documentation of GAPS product 30 GXP 2000 User Manual Grandstream Networks Inc 6 Firmware Upgrade 6 1 Upgrade through HTTP To upgrade software GXP 2000 can be configured with an HTTP server where the new code image file is located For example following URL in the HTTP Upgrade Server http firmware mycompany com 6688 Grandstream 1 0 0 4 Where firmware mycompany com is the FQDN of the HTTP server 6688 is the TCP port the HTTP server listening to Grandstream 1 0 0 4 is the RELATIVE directory to the root dir in HTTP server Thus you can put different firmware into different directory as well Note If Auto Upgrade field is set to No HTTP upgrade will be performed only once during boot up If itis set to Yes the device will check the HTTP server in the number of days that is defined in Check for new firmware every field 6 2 Upgrade through TFTP To upgrade software GXP 2000 can be configured with a TFTP server where the new code image is located The TFTP upgrade can work in either static IP or DHCP mode using private or public IP address It is recommended to set the TFTP server address in either a public IP address or on the same LAN with the GXP 2000 There are t
6. There are two states when GXP 2000 receives a call 1 When receiving an initial call Besides ringing with selected Ring Tone the corresponding account LINE will flash in red taking Handset SPEAKER Headset off hook will enable user to hear the calling party in Handset SPEAKER Headset 2 When receiving second or more incoming calls besides playing stutter Call Waiting tone GXP 2000 will pick up the corresponding account LINE or the next available LINE as described in section 4 3 2 4 3 6 Call Hold While in conversation pressing the HOLD button will put the other party on hold User can resume the conversation by pressing the corresponding LINE User will also automatically put the current line on HOLD by pressing another available LINE for making or receiving other phone calls 4 3 7 Call Waiting and Switch between Calls GXP 2000 can support up to 11 Lines user can switch to another line for making or answering calls and automatically put an ACTIVE call on Hold When receiving second or more incoming calls besides playing a stutter Call Waiting tone GXP 2000 will pick up the corresponding account or the next available LINE as described in section 4 3 2 4 3 8 Call Transfer GXP 2000 supports both BLIND and ATTENDED Transfer 1 Blind Transfer When a LINE is ACTIVE user will get a dial tone by pressing the TRNF button then dial the number and press the SEND button this will transfer the other p
7. days DTMF Payload Type 1 Syslog Server Syslog Level NFO NTP Server tmenistov w RI or IP address Custom ring tone 1 used if incoming caller ID is Distinctive Ring Tone Custom ring tone 2 used if incoming caller ID is Custom ring tone 3 used if incoming caller ID is 9 No G Yes Q Lock keypad update No Yes Disable Call Waiting G Yes configuration update via keypad is disabled if set to GXP 2000 User Manual Grandstream Networks Inc Four independent SIP account each has its own configuration page Their configurations are identical The following is a screen shot of SIP Account 1 settings Account Active G No Q Yes Account Name My Company e g MyCompany SIP Server Aa e g sip mycompany com or IP address Outbound Proxy e g proxy myprovider com or IP address if any SIP User ID the user part of an SIP address Authenticate ID eai can be identical to or different from SIP User ID Authenticate Passord purposely not displayed for security protection Name optional e g John Doe Use DNS SRV yo O yes User ID is phone E C number No Yes SIP Registration G No E Yes Unregister On Reboot G No E Ves Register Expiration i in minutes default 1 hour max 45 days local SIP port 5 0 default 5060 NAT Traversal C E STUN JE No Yes SUBSCRIBE for MWE E No G Ya Proxy Require Voice Mail UserID User ID extension
8. embedded Web server inside the GXP 2000 will respond with the Configuration page which is explained in details below End User o purposely not displayed for security protection Password IP Address G dynamically assigned via DHCP default or PPPoE will attempt PPPoE if DHCP fails and following is non blank PPPoE account ID Doo PPPoE password fo Preferred DNS server fo Jo T T o statically configured as IP Address Subnet Mask Default Router DNS Server 1 DNS Server 2 Speed Dial 1 Nam a JohnDoe seiD 6170612 eee nts a Account 2 i Account 2 Account 2 Speed Dial 2 Name Speed Dial 3 Name UserID 25 GXP 2000 User Manual Grandstream Networks Inc erent Account 1 UserID 0 Account Account err Account 1 Speed Dial 4 UserID Account 1 r Speed Dial 5 Speed Dial 6 UcD Account 1 r Speed Dial 7 UserID Time Zone GMT 6 00 US Central Time Chicago Account Daylight Savings G No E yes if set to Yes display time will be 1 hour ahead of Time normal time LCD Backlight r Always On E No yes Time Display p Format 12HOUR 24HOUR o Year Month Day Date Display Format Month Day Y ear G Day Month Year End User This contains the password to access the Web Configuration Menu This Password field is case sensitive with a maximum length of 25 characters IP Address There are two modes unde
9. for all subsequent calls 67 Block Caller ID per call 82 Send Caller ID per call 70 Disable Call Waiting Per Call 71 Enable Call Waiting Per Call 72 Unconditional Call Forward To use this feature dial 72 and get the dial tone Dial the forward number and for a dial tone then hang up E13 Cancel Unconditional Call Forward To cancel Unconditional Call Forward dial 73 and get the dial tone then hang up 90 Busy Call Forward To use this feature dial 90 and get the dial tone Dial the forward number and for a dial tone then hang up 9 Cancel Busy Call Forward To cancel Busy Call Forward dial 91 and get the dial tone then hang up 92 Delayed Call Forward To use this feature dial 92 and get the dial tone Dial the forward number and for a dial tone then hang up 93 Cancel Delayed Call Forward To cancel this Forward dial 93 and get the dial tone then hang up P e GXP 2000 User Manual Grandstream Networks Inc 5 Configuration Guide 5 1 Configuration with Keypad When the phone is on hook press the MENU button to enter MENU mode When the phone goes off hook or a call comes in the phone automatically exits the MENU state and prepares for the call It also exits the MENU state if left idle for 20 seconds Here are the Menu options supported Menu Item Menu Functions Display 1 DO
10. is an incoming call The GXP 2000 supports up to 8 different Vocoder types including G 711 A U law GSM G 723 1 G 726 G 728 G 729A B iLBC Depending on the product model some of these Vocoders may not be provided in standard release User can configure Vocoders in a preference list that will be included with the same preference order in SDP message The first Vocoder in this list can be entered by choosing the appropriate option in Choice 1 Similarly the last Vocoder in this list can be entered by choosing the appropriate option in Choice ae Default is Standard Choose the selection to meet some special requirements from Soft Switch vendors like Nortel Broadsoft etc 5 2 4 Saving the Configuration Changes Once a change is made the user should press the Update button in the Configuration Menu The IP phone will then display the following screen to confirm that the changes have been saved ee a Ae GXP 2000 User Manual Grandstream Networks Inc Your configuration changes have been saved They will take effect on next reboot User is recommended to power cycle the IP phone after seeing the above message 5 2 5 Rebooting the Phone from Remote The administrator of the phone can remotely reboot the phone by pressing the Reboot button at the bottom of the configuration menu Once done the following screen will be displayed to indicate that rebooting is underway The device is rebooting now Y
11. long as 1 to 2 minutes over the Internet or just 20 seconds if it is performed on a LAN Users are recommended to conduct TFTP upgrade in a controlled LAN environment if possible For those who do not have a local TFTP server Grandstream provides a NAT friendly TFTP server on the public Internet for firmware upgrade Please check the Services section of Grandstream s Web site to obtain this TFTP server s IP address NOTES e When GXP 2000 boots up it will send TFTP or HTTP request to download configuration files there are two configuration files one is cfg txt and the other is cfg000b82xxxxxx where 000b82xxxxxx is the MAC address of the GXP 2000 These two files are for initial automatically provisioning purpose only for normal TFTP or HTTP firmware upgrade the following error messages in a TFTP or HTTP server log can be ignored FTP Error from IP ADRESS requesting cfg000b82023dd4 File does not exist FTP Error from IP ADRESS requesting cfg txt File does not exist A GXP 2000 User Manual Grandstream Networks Inc 7 Restore Factory Default Setting Restore the Factory Default Setting will DELETE all configuration information of the device Please backup or print out all the settings before you approach to following steps Grandstream will not take any responsibility if you lose all the parameters of setting and cannot connect to your service provider Step 1 Find the MAC
12. zeroes means unavailable or unsupported Press Menu to exit take effect immediately Display 11 MAC Address Press Menu to display the physical MAC address Press Menu or f to exit Display 12 Ring 0 Press Menu to hear the selected ring tone press or T to select the stored ring tones Now only 3 are available ring 0 default ring 1 and ring 2 ring 3 is unavailable or unsupported Press Menu to select and exit take effect immediately Display 15 Diagnostic Mode Press Menu to enter this mode all LEDs will light up Press any key on the keypad the button name will be displayed in the LCD Lift and put back the handset to exit the diagnostic mode Display RESET please be very CAREFUL here e Press Menu without key in anything phone will function the same as power cycle reboot e Key in the physical MAC address on back of the phone Press Menu phone will be reset back to FACTORY DEFAULT setting all your setting will be erased Please refer to Section 7 for complete details iae ee GXP 2000 User Manual Grandstream Networks Inc Menu Item Menu Functions When phone is powered on and time is displayed e Press or t Display ring 4 press or t again to hear and adjust the ring tone volume from 0 off to 7 maximum to Others designed one then off and on the handset to set the ring tone volume e Press SPEAKER button
13. 53 6l 62 63 71 72 73 74 81 82 83 91 92 93 94 O CO W DN Ma eA NIKS ICHAT OT oZ SIC AST LIQ Amy o Ow gt The rule of thumb to remember these encoding is a is the first letter on button 1 so its encoding is 11 b is the 2 letter on button 1 and its encoding is 12 c is the 3 letter on button 1 and its encoding is 13 Likewise d is the first letter on button 2 and its encoding is 21 This pattern and rule apply to all other alphabetic encoding Examples If the target IP address is 192 168 0 160 the dialing convention is Menu_key 192168000160 16 GXP 2000 User Manual Grandstream Networks Inc followed by pressing the Re Dial button or the key is it is configured as a send key In this case the default destination port 5060 is used if no port is specified If the target IP address port is 192 168 1 20 5062 the dialing convention would be Menu_key 192168001020 45062 followed by pressing the SEND Re Dial button or the key is it is configured as a send key If the target address is john 192 168 1 100 5062 the dialing convention would be Menu_key 51634262 3192168001100 45062 followed by pressing the SEND Re Dial button or the key is it is configured as a send key 4 3 5 Receiving Calls
14. Address of the device The MAC address of the device is located on the bottom of the device It is a 12 digit number User can also use Menu option 10 to find out the phone s MAC address Step 2 Encode the MAC address Please use the following mapping 0 9 0 9 A 22 B 222 C 2222 D 33 E 333 F 3333 For example if the MAC address is 000b8200e395 it should be encoded as 0002228200333395 Step 3 Access the phone screen menu select reset with the up or down arrows keys Step 4 Enter the encoded MAC address Once the correct MAC address is displayed in the LCD screen press MENU button the device will reboot automatically and restore to factory default setting 42
15. GXP 2000 User Manual Grandstream Networks Inc User Manual GXP 2000 Enterprise IP Phone For Firmware Version 1 0 1 9 Grandstream Networks Inc www grandstream com Z GRANDSTREAM NETWORKS e Aandstrean GXP 2000 User Manual Grandstream Networks Inc Table of Contents 1 WELCOME 2 INSTALLATION 2 1 WHAT IS INCLUDED IN THE PACKAGE 2 2 CONNECTING YOUR PHONE 2 3 WALL MOUNT 2 4 SAFETY COMPLIANCES 2 5 WARRANTY 3 PRODUCT OVERVIEW 3 1 KEY FEATURES 3 2 HARDWARE SPECIFICATION 4 USING GxXP 2000 IP PHONE 4 1 GETTING FAMILIAR WITH LCD 4 2 GETTING FAMILIAR WITH KEYPAD 4 3 MAKING AND ANSWERING PHONE CALLS 4 3 1 4 3 2 4 3 3 4 3 4 4 3 5 4 3 6 4 3 7 4 3 8 4 3 9 4 3 10 4 3 11 4 3 12 Handset Speakerphone and Headset Mode Multiple SIP Accounts and Lines Making Calls Making Calls using IP Address Receiving Calls Call Hold Call Waiting and Switch between Calls Call Transfer 3 Way Conferencing Checking Message and Message Waiting Indication Mute and Delete Speed Dial 4 4 CALL FEATURES 5 CONFIGURATION GUIDE 5 1 CONFIGURATION WITH KEYPAD 5 2 CONFIGURATION WITH WEB BROWSER 5 2 1 3 2 2 3 2 3 5 2 4 5 2 5 Access the Web Configuration Menu End User Configuration Advanced User Configuration Saving the Configuration Changes Rebooting the Phone from Remote 5 3 CONFIGURATION THROUGH CENTRAL PROVISIONING SERVER z5 ssis aS 6z 6a sere 8 9 10 11
16. NOT DISTURB Off Press Menu to enter edit mode enable DND or _ disable DND for the current selection Press or T to toggle the selection Press Menu to save and exit Display 2 DHCP PPPoE Mode Press Menu to enter edit mode enable DHCP Mode or _ disable DHCP Mode for the current selection Press or T to toggle the selection Press Menu to save and exit Must recycle power to take effect Display 3 IP Address Press Menu to display the current IP address Enter new IP address if DHCP is OFF Press or f to exit Press Menu to save and exit Must recycle power to take effect Display 4 Subnet Mask Press Menu to display the Subnet address Enter new Subnet address if DHCP is OFF Press or f to exit Press Menu to save and exit Must recycle power to take effect z2 Ts GXP 2000 User Manual Grandstream Networks Inc Menu Item Menu Functions Display 5 Default Gateway Press Menu to display the Router Gateway address Enter new Router Gateway address if DHCP is OFF Press or f to exit Press Menu to save and exit Must recycle power to take effect Display 6 DNS Server Press Menu to display the DNS address Enter new DNS address if DHCP is OFF Press or f to exit Press Menu to save and exit Must recycle power to take effect Display 7 TFTP Server Press Menu to display t
17. any com 6688 Grandstream 1 0 5 16 Here 6688 is the specific TCP port that the HTTP server is listening at it can be omitted if using default port 80 Note If Auto Upgrade is set to No GXP 2000 will only do HTTP download once at boot up Choose Yes to enable automatic HTTP upgrade and provisioning In Check for new firmware every field enter the number of days to enable GXP 2000 to check the HTTP server for firmware upgrade or configuration in the defined period of days When set to No GXP 2000 will only do HTTP upgrade once at boot up This parameter sets the payload type for DTMF using RFC2833 This parameter defines the URI or IP address of the NTP Network Time Protocol server which is used by GXP 2000 to display the current date time 33 GXP 2000 User Manual Grandstream Networks Inc Distinctive Ring Tone Disable Call Waiting Lock keypad update Syslog Server Syslog Level Customer Ring Tone to 3 with associate Caller ID when selected if Caller ID is configured then the device will ONLY sound this ring tone when the incoming call is from the Caller ID device will use System Ring Tone for all other calls When selected but no Caller ID is configured the selected ring tone will be used for all incoming calls Default is No If this parameter is set to Yes the configuration update via keypad is disabled The IP address or URL of System log server This feature is especially
18. arty in the corresponding LINE to the dialed number 17 GXP 2000 User Manual Grandstream Networks Inc 2 Attended Transfer When in conversation with an ACTIVE LINE as defined in section 4 3 2 user shall press TRNF button then press the intended LINE that is on HOLD If there is no LINE on HOLD user will need to make a call and thus automatically puts the current ACTIVE LINE on HOLD Note e Transferring calls across SIP domains needs to be supported by SIP services 4 3 9 3 Way Conferencing GXP 2000 supports 3 way conferencing With one LINE ACTIVE and another LINE on HOLD press the CONF button then the LINE that is on HOLD will join the three parties together in a conference If after pressing the CONF button a user decides not to conference anyone user can cancel it and resume the conversation by pressing CONF or the original LINE button If the conference holder wishes to end a conference simply press HOLD which breaks the conference and places both parties on hold User can then talk to each individual party by selecting the corresponding LINE 4 3 10 Checking Message and Message Waiting Indication When GXP 2000 is on hook pressing the MSG button will trigger the phone to call the VM Server VMS configured for the primary account If a line account is selected first it dials the VMS configured for that account The MWI Message Waiting Indicator LED will flash in red color in three q
19. as a result of configuring this parameter This parameter is associated with the first vocoder in the above vocoder Preference List or the actual used payload type negotiated between the 2 conversation parties at run time e g if the first vocoder is configured as G723 and the Voice Frames per TX is set to be 2 then the ptime value in the SDP message of an INVITE request will be 60ms because each G723 voice frame contains 30ms of audio Similarly if this field is set to be 2 and if the first vocoder chosen is G729 or G711 or G726 then the ptime value in the SDP message of an INVITE request will be 20ms If the configured voice frames per TX exceeds the maximum allowed value the GXP 2000 will use and save the maximum allowed value for the corresponding first vocoder choice The maximum value for PCM is 10 x10ms frames for G726 it is 20 x10ms frames for G723 it is 32 x30ms frames for G729 G728 64 x10ms and 64 x2 5ms frames respectively This parameter defines the local RTP RTCP port pair the GXP 2000 will listen and transmit It is the base RTP port for channel 0 When configured channel 0 will use this port value for RTP and the port_value 1 for its RTCP channel 1 will use port_value 2 for RTP and port_value 3 for its RTCP The default value is 5004 aoe GXP 2000 User Manual Grandstream Networks Inc Use Random Port Keep alive interval Use NAT IP STUN Server Firmware Upgrade Via TFTP Server
20. call the preset calling party number Once pressed the dialed number is displayed on the LCD as the corresponding DTMF tone is played out If the SEND button is not pressed after the phone number the phone will wait for 4 seconds before initiating the call 4 3 4 Making Calls using IP Address Direct IP calling allows two phones to talk to each other in an ad hoc fashion without a SIP proxy VoIP calls can be made between two phones if Both phones have public IP addresses or Both phones are on a same LAN using private or public IP addresses or Both phones can be connected through a router using public or private IP addresses To make a direct IP calling first pick up the phone or turn on the speakerphone then press Menu button followed by the 12 digit target IP address If there is a user part press Menu button and then the encoded user part followed by 3 encoding for and then followed by the 12 digit target IP address Destination ports can also be specified using 4 encoding for followed by the encoded port number The follow is a table of the encoding scheme for the most commonly used characters Input Encoding 00 0 01 1 02 2 03 3 15 GXP 2000 User Manual Grandstream Networks Inc 04 05 06 07 08 09 0 dot character _ underscore character 2 hyphen character 3 4 column character 21 22 23 31 32 33 41 42 43 51 52
21. en is in IDLE mode LEFT Shift cursor to left RIGHT gt Shift cursor to right MENU e Enter MENU mode when phone is in IDLE mode It is also the ENTER key once entering MENU TRNF Transfer an ACTIVE call to another number CONF Bring Calling Called party into conference MSG Enter to retrieve voice mails or other messages MUTE DEL Mute an ACTIVE call or Delete a key entry call log voice mail and etc HOLD Temporarily hold an ACTIVE call SPEAKER Enter hands free mode Dial a new number or Redial the last number dialed After entering SEND the phone number pressing this key would force a call to go out immediately before timeout 12 standard Digit and keys are usually used to make phone _Q ee calls 13 GXP 2000 User Manual Grandstream Networks Inc 4 3 Making and Answering Phone Calls 4 3 1 Handset Speakerphone and Headset Mode Handset can be switched with either Speaker or Headset however whenever the Headset is plugged in Speaker will be switched to Headset To Switch between Handset and Speaker Headset simply press the Hook Flash in the Handset cradle 4 3 2 Multiple SIP Accounts and Lines GXP 2000 can support up to 4 independent SIP accounts Each account is capable of independent SIP Server user and NAT settings among others GXP 2000 supports up to 11 concurrent audio channels arbitrarily assigned to these SIP accounts they can be used in any combination as long as the server allows it Speed dial
22. for 3rd party voice mail system Send DTMF L inaudio via RTP RFC2833 via SIP INFO Early Dial Ea No G Yes use Yes only if proxy supports 484 response GXP 2000 User Manual Grandstream Networks Inc Dial Plan Prefix this prefix string is added to each dialed number Enable Can Fegrres E No o Yes if Yes Call Forwarding amp Call Waiting Disable are supported locally Session Expiration ban in seconds default 180 seconds Min SE Z in seconds default and minimum 90 seconds Q Caller Request Timer G Yes Request for timer when making outbound calls Q Callee Request Timer Yes When caller supports timer but did not request one Gl Force Timer UAC Specify Refresher UAS Specify i Refresher UAS When UAC did not specify refresher tag Yes Use timer even when remote party does not support UAS o Omit Recommended a op Q Force INVITE No Yes Always refresh with INVITE instead of UPDATE i Enable 100rel No G Yes Gl system ring tone 1 Account Ring Tone custom ring tone custom ring tone 2 custom ring tone 3 anno Send Anonymous No G Yes caller ID will be blocked if set to Yes Auto Answer Q No G Yes choice 1 ee choice 5 Preferred Vocoder choice 2 choice 6 in listed order Poe Ow choice 7 PCMU choice 4 choice 8 Special Feature Standard 31 GXP 2000 User Manual Grandstream Networks Inc
23. h the specified registrar The default interval is 60 minutes or 1 hour The maximum interval is 65535 minutes about 45 days This parameter defines the local SIP port the GXP 2000 will listen and transmit The default value for Account 1 is 5060 It is 5062 5064 5066 for Account 2 Account 3 and Account 4 respectively 35 GXP 2000 User Manual Grandstream Networks Inc NAT Traversal Subscribe for MWI Proxy Require Voice Mail User ID Send DTMF Early Dial Dial Plan Prefix Enable Call Features Session Expiration Min SE Caller Timer Callee Timer Request Request This parameter defines whether the GXP 2000 NAT traversal mechanism will be activated or not If activated by choosing Yes and a STUN server is also specified then the GXP 2000 will behave according to the STUN client specification Under this mode the embedded STUN client inside the GXP 2000 will attempt to detect if and what type of firewall NAT it is sitting behind through communication with the specified STUN server If the detected NAT is a Full Cone Restricted Cone or a Port Restricted Cone the GXP 2000 will attempt to use its mapped public IP address and port in all of its SIP and SDP messages If the NAT Traversal field is set to Yes with no specified STUN server the GXP 2000 will periodically every 20 seconds or so send a blank UDP packet with no payload data to the SIP server to keep the hole on t
24. he NAT open Default is No When set to Yes a SUBSCRIBE for Message Waiting Indication will be sent periodically SIP Extension to notify SIP server that the unit is behind the NAT Firewall When configured user will be able to dial voice mail server by pressing MSG button This parameter controls how DTMF events are transmitted There are 3 ways in audio which means DTMF is combined in audio signal not very reliable with low bit rate codec via RTP RFC2833 or via SIP INFO Default is No Use only if proxy supports 484 response Sets the prefix added to each dialed number Default is No If set to Yes Call transfer Call Forwarding amp Do Not Disturb are supported locally Grandstream implemented SIP Session Timer The session timer extension enables SIP sessions to be periodically refreshed via a re INVITE request Once the session interval expires if there is no refresh via a re INVITE message the session will be terminated Session Expiration is the time in seconds at which the session is considered timed out if no successful session refresh transaction occurs beforehand The default value is 180 seconds The minimum session expiration in seconds The default value is 90 seconds If selecting Yes the phone will use session timer when it makes outbound calls if remote party supports session timer If selecting Yes the phone will use session timer when it receives inbound calls with
25. he TFTP address Enter new TFTP server address Press or f to exit Press Menu to save and exit Display 8 G 711u 2 Press Menu to select new codec Press or t to browse a list of available codecs line 1 G 711A 2 2 G 722 2 3 G 723 1 4 G 726 2 5 G 728 8 6 G 729 2 7 iLBC 1 Press 1 to 9 to indicate number of frames per TX packet Press Menu to save and exit The codec selected takes effect immediately Display 9 SIP Svr1 Press Menu to display the SIP Server Service Provider Press or T to browse the valid SIP Server 1 4 Press Menu to save and exit SIP Server s must be configured via Web browser Only configured SIP server s are displayed Take effect immediately oon GXP 2000 User Manual Grandstream Networks Inc Menu Item 10 11 12 15 RESET Menu Functions Display 10 Firmware Version Press Menu to display the code releases Press or f to browse line 1 b 2005 03 15 date boot code 2 1 0 0 3 version boot code 3 P 2005 03 15 date phone code 4 1 0 0 3 version phone code 5 1st 2004 05 12 date 1 ring tone 6 1 0 0 0 version ring tone 7 2nd 2004 05 12 date 2 ring tone 8 1 0 0 0 version ring tone 9 3rd 0000 00 00 date 3 ring tone 10 0 0 0 0 version ring tone all
26. larity can be auto detected thus either straight through or twist cable can be used Support Message Waiting Indication LED Hardware Specification The table below describes the hardware specification of GXP 2000 Model LAN interface Power over Ethernet Headset Jack LED Universal Switching Power Adaptor Dimension Weight Temperature Humidity Compliance GXP 2000 2xRJ45 10 100Base T with PoE 802 3af IEEE 802 3af standard can draw power from both spare lines or signal lines from Ethernet 3 5mm Headset port 11 LED with different light pattern in RED color Input 100 240VAC 50 60 Hz Output 5VDC 1200mA UL certified 215mm W 220mm D 57mm H 0 82kg 1 8lbs 40 130 F 5 45 C 10 90 non condensing FCC CE C Tick Pending 10 GXP 2000 User Manual Grandstream Networks Inc 4 Using GXP 2000 IP Phone 4 1 Getting Familiar with LCD GXP 2000 phone has a numeric LCD of 64 rows x 131 columns in pixels Here is the display when all segments illuminate E 4 alll ESRB ndstream The LCD is equipped with a backlight When the phone is configured properly and in the normal idle state the backlight is off Whenever an event occurs the backlight turns on automatically and brings the user s attention Icon LCD Icon Definitions Network Status Icon FLASH in the case of Ethernet link failure OFF if IP address or SIP server is not found ON if IP address and SIP
27. layed in LCD SIP Server s IP address or Domain name provided by VoIP service provider IP address or Domain name of Outbound Proxy or Media Gateway or Session Border Controller Used by GXP 2000 for firewall or NAT penetration in different network environment If symmetric NAT is detected STUN will not work and ONLY outbound proxy can provide solution for it User account information provided by VoIP service provider ITSP usually has the form of digit similar to phone number or actually a phone number SIP service subscriber s Authenticate ID used for authentication Can be identical to or different from SIP User ID SIP service subscriber s account password for GXP 2000 to register to SIP servers of ITSP SIP service subscriber s name which will be used for Caller ID display Default is No If set to Yes the client will use DNS SRV to look up server If the GXP 2000 has an assigned PSTN telephone number this field should be set to Yes Otherwise set it to No If Yes is set a user phone parameter will be attached to the From header in SIP request This parameter controls whether the GXP 2000 needs to send REGISTER messages to the proxy server The default setting is Yes Default is No If set to yes the SIP user s registration information will be cleared on reboot This parameter allows user to specify the time frequency in minutes that GXP 2000 refreshes its registration wit
28. n page please follow the instructions in section 5 2 1 to get to the following login page The password is case sensitive with a maximum length of 25 characters and the factory default password for Advanced User is admin Password Login Advanced User configuration includes not only the end user configuration but also advanced configuration such as SIP configuration Codec selection NAT Traversal Setting and other miscellaneous configuration Following is a screen shot of the advanced configuration page GXP 2000 User Manual Grandstream Networks Inc Admin Password purposely not displayed for security protection Silence Suppression Fi yy G veg Voice Frames per TX up to 10 20 32 64 for G711 G726 G723 other codecs respectively Layer 3 QoS ai Diff Serv or Precedence value Layer 2 QoS 802 1Q VLAN Tag 802 1p priority value 0 7 No Key Ent a i in seconds default is 4 seconds Use as Dial Key G No o Yes if set to Yes will function as the Re Dial key local RTP port 5004 1024 65535 default 5004 Use random port amp No G Yes keep alive interval a in seconds default 20 seconds Use NAT IP if specified this will be used in SIP SDP message STUN server stun mycompany com URI or IP po rt Firmware Upgrade Via TFTP Server 168 75 i 215 188 G Via HTTP Server fm grandstream comgs Automatic HTTP Upgrade o No G Yes check for upgrade Da days default 7
29. numbers configured must be associated to a specific SIP account Each of the 4 LINE buttons LINE1 LINE4 is virtually mapped to each SIP account In offhook state when user chooses an idle line the name of the account as configured in the web interface will be displayed in the LCD while a dial tone is being played out For example if the 4 SIP accounts are named FWD SIPPHONE BROADVOICE and PBX respectively and they are all active and registered When LINE is pressed user will hear dial tone and see FWD When LINE2 is pressed user will hear dial tone and see SIPPHONE When LINES3 is pressed user will hear dial tone and see BROADVOICE When LINE4 is pressed user will hear dial tone and see PBX For outgoing calls GXP 2000 will pick up the LINE pressed which will be lit up in solid red color User can switch the dialing account before dialing any digits by pressing the same LINE button one or more times If user continues to press one LINE the selected account will circulate among the registered accounts For example when LINE is pressed LCD displays FWD If LINE1 is pressed again LCD displays SIPPHONE and the subsequent call will be made through SIP account 2 For incoming calls if an account is configured and registered all incoming calls for that account will attempt to use its corresponding LINE if it is not in use When the virtually mapped line is in use GXP 2000 will flash the nex
30. ou may relogin by clicking on the link below in 30 seconds Click to relogin At this point user can relogin to the phone after waiting for about 30 seconds 5 3 Configuration through Central Provisioning Server Grandstream GXP 2000 can be automatically configured from a central provisioning system 38 GXP 2000 User Manual Grandstream Networks Inc When GXP 2000 boots up it will send TFTP or HTTP request to download configuration files there are two configuration files one is cfg txt and the other is cfg000b82xxxxxx where 000b82xxxxxx is the MAC address of the GXP 2000 For more information regarding configuration file format please refer to the related Grandstream documentation The configuration files can be downloaded via TFTP or HTTP from the central server A service provider or an enterprise with large deployment of GXP 2000 can easily manage the configuration and service provisioning of individual devices remotely and automatically from a central server GAPS Grandstream Automated Provisioning System uses enhanced NAT friendly TFTP or HTTP thus no NAT issues and other communication protocols to communicate with each individual GXP 2000 for firmware upgrade remote reboot etc Grandstream provides a licensed provisioning system called GAPS that can be used to support automated configuration of GXP 2000 To enable this feature on the GXP 2000 a user just needs to enter the IP address of the
31. p the LCD backlight on all the time Default is No Always On In addition to the Basic Settings configuration page end user also has access to the device Status page The following is a screen shot of the device Status page Details are explained next MAC Address 00 0B 82 03 9E DF IP Address 192 168 1 11 Product Model GXP2000 Software Version Program 1 0 1 9 Bootloader 1 0 1 2 System Up Time 2 day s 23 hour s 58 minute s Registered Account 1 Yes Account 2 Yes Account 3 No Account 4 No PPPoE Link Up disabled detected NAT type is full cone MAC Address The device ID in HEX format This is a very important ID for ISP troubleshooting IP Address This field shows LAN IP address of GXP 2000 27 GXP 2000 User Manual Grandstream Networks Inc Product Model This field contains the product model info Software Version e Program This is the main software release its number is always used for firmware upgrade e Bootloader This is normally not changed System Up Time This field shows system up time since the last reboot Registered This field indicates whether the device is registered to the SIP server s PPPoE Link Up This field shows whether the PPPoE connection is up if connected to DSL modem Detected NAT Type This field shows what kind NAT the GXP 2000 is connected to via its LAN port It is based on STUN protocol 5 2 3 Advanced User Configuration To login to the Advanced User Configuratio
32. r which the GXP 2000 can operate e IfDHCP mode is enabled then all the field values for the Static IP mode are not used even though they are still saved in the Flash memory The GXP 2000 will acquire its IP address from the first DHCP server it discovers from the LAN it is connected e To use the PPPoE feature the PPPoE account settings need to be set The GXP 2000 will attempt to establish a PPPoE session if any of the PPPoE fields is set e If Static IP mode is enabled then the IP address Subnet Mask Default Router IP address DNS Server 1 primary DNS Server 2 secondary fields will need to be configured These fields are set to zero by default Speed Dial There are 7 speed dial fields that can be configured e Name field is used to identify the person It will be displayed on LCD when pressing the corresponding key e UserID field is the number configured e Account field is the SIP account associated with the number 062 GXP 2000 User Manual Grandstream Networks Inc Time Zone This parameter controls how the date time is displayed according to the specified time zone Daylight Savings Time This parameter controls whether the time will be displayed in daylight savings time or not If set to Yes then the displayed time will be 1 hour ahead of normal time Date Display Format Allow user to choose among the following three formats Year Month Day Month Day Year Day Month Year LCD Backlight Allow user to kee
33. server are located Phone Status Icon OFF when the handset is on hook ON when the handset is off hook Speaker Phone Status Icon FLASH when phone rings or a call is pending OFF when the speakerphone is off ON when the speakerphone is on Handset Speakerphone and Ring Volume Icon 0 7 scales to adjust handset speakerphone ring volume ll GXP 2000 User Manual Grandstream Networks Inc 6 88 Real time Clock Synchronized to Internet time server Time zone configurable via web browser Time Icon AM for the morning PM for the afternoon 4 2 Getting Familiar with Keypad Speaker Send Re Dial 12 Standard Keypad Message Waiting Indicator Line 1 4 Keys Menu Keys Speed Dial Configurable line indicators Mute Delete Message Conference Transfer GXP 2000 User Manual Grandstream Networks Inc GXP 2000 phone has 35 key buttons Key Button Key Button Definitions 4 Line keys with LED can be extended to 11 Lines with the use of DINE DINGS 7 Speed Dial Keys on the right SPEED DIAL 7 Speed dial keys with LED that can be configured to use for LINE EXTENDED LINE calls as well Next Menu item when phone is in MENU mode Wea Or reduce handset speakerphone volume when phone is ACTIVE Or reduce ring volume when phone is in IDLE mode Previous Menu item when phone is in MENU mode DOWN Or increase handset speakerphone volume when phone is ACTIVE Or increase ring volume wh
34. session timer request 36 GXP 2000 User Manual Grandstream Networks Inc Force Timer UAC Specify Refresher UAS Specify Refresher Force INVITE Account Ring Tone Send Anonymous Auto Answer Preferred Vocoder Special Features If selecting Yes the phone will use session timer even if the remote party does not support this feature Selecting No will allow the phone to enable session timer only when the remote party support this feature To turn off Session Timer select No for Caller Request Timer Callee Request Timer and Force Timer As a Caller select UAC to use the phone as the refresher or UAS to use the Callee or proxy server as the refresher As a Callee select UAC to use caller or proxy server as the refresher or UAS to use the phone as the refresher Session Timer can be refreshed using INVITE method or UPDATE method Select Yes to use INVITE method to refresh the session timer There are 4 different ring tone that are defined e System Ring Tone when selected all calls will ring with system ring tone e Customer Ring Tone 1 to 3 when selected GXP 2000 will ONLY play this ring tone for all the incoming calls for this account If this parameter is set to Yes the From header in outgoing INVITE message will be set to anonymous essentially blocking the Caller ID from displaying When set to Yes GXP 2000 will automatically switch to speaker when there
35. so be used in general household The following photo illustrates the appearance of a GXP 2000 IP phone GRANDSTREAM Front View Back View GXP 2000 User Manual Grandstream Networks Inc 3 1 Key Features Grandstream GXP 2000 IP Phone is a next generation enterprise IP telephone based on industry open standard SIP Session Initiation Protocol Built on innovative technology Grandstream IP Phone features market leading superb sound quality and rich functionalities at mass affordable price Software Feature Support SIP 2 0 TCP UDP IP PPPoE RTP RTCP HTTP ARP RARP ICMP DNS DHCP NTP SNTP TFTP SIMPLE PRESENCE protocols Support multiple SIP accounts and up to 11 media channels concurrently Support multiparty conferencing Support NAT traversal using IETF STUN and Symmetric RTP Advanced Digital Signal Processing DSP technology to ensure superior hi fidelity audio quality interoperable with various 3 party SIP end user device Proxy Registrar Server and Gateway products Advanced and patent pending adaptive jitter buffer control packet delay and loss concealment technology Support popular codecs including G711 a law and u law G722 G 723 1 5 3K 6 3K G 726 40K 32K 24K 16K G 728 G 729A B GSM and iLBC Dynamic negotiation of codec and voice payload length Support standard voice features such as Caller ID Display or Block Call Waiting Call Waiting Caller ID Call Hold Call Transfer attended blind Do No
36. t Disturb Call Forwarding in band and out of band DIMF RFC2833 SIP INFO Dial Plans Off Hook Auto Dial Auto Answer Early Dial and Speed Dial etc Full duplex hands free speakerphone redial call log volume control voice mail with indicator downloadable ring tone etc Support Silence Suppression VAD Voice Activity Detection CNG Comfort Noise Generation Line Echo Cancellation G 168 and AGC Automatic Gain Control Support DIGEST authentication and encryption using MD5 and MD5 sess Provide easy configuration through manual operation phone keypad Web interface or automated provisioning by downloading encrypted configuration file via HTTP TFTP for mass deployment Support for Layer 2 802 1Q VLAN 802 1p and Layer 3 QoS ToS DiffServ MPLS Support firmware upgrade via TFTP or HTTP Support DNS SRV Look up and SIP Server Fail Over Hardware Feature Graphic LCD that can display 64 rows x 131 columns in pixels Support up to 11 line calls and 7 speed dial keys Current firmware support 4 line with 7 speed dial keys Support Power over Ethernet PoE IEEE standard 802 3af power can be drawn from either spare line or data line Note GXP 2000 will use power from power adapter whenever it is plugged in 9 GXP 2000 User Manual Grandstream Networks Inc 3 2 Support Headset which will auto switch to Headset when plugged in Support 10 100 Full Half Duplex Ethernet Switch with LAN and PC port Ethernet po
37. t available LINE from Left to Right then Top to Bottom in red color LINE 5 to 11 cannot be picked like LINE 1 to 4 This happens automatically When an incoming call arrives while all of the 4 LINE 1 4 channels are in use LINES will be selected When all 4 LINE 1 4 channels are in use and user places an active call on hold user can on hook and off hook to activate the next available channel LINES or whatever the next one When any one of the 7 functions keys are associated with a call they function as LINE keys otherwise they function as speed dial keys So when LINE 5 is in use you cannot use speed dial 1 but speed dial 2 7 still work A LINE is defined as ACTIVE when it is making or receiving a call and its corresponding LINE LED is lit up in solid RED 14 GXP 2000 User Manual Grandstream Networks Inc 4 3 3 Making Calls There are three ways to make phone calls l Note Make Handset SPEAKER Headset off hook or press the available LINE key to select a SIP account the corresponding LINE LED will light up in solid red Enter the phone numbers and press the SEND key Make Handset SPEAKER Headset off hook or press the available LINE key the corresponding LINE LED will light up in solid red Press the SEND button to redial the last number called Make Handset SPEAKER Headset off hook or press the available LINE key the corresponding LINE LED will light up in solid red Press the Speed Dial key to
38. tor 5 One Ethernet Cable 2 2 Connecting Your Phone Following is a backside picture of GXP 2000 each connection port is labeled with the name in the following table l EXT PC LAN PoE POWER HEADSET The table below describes the connectors on the GXP 2000 phone Extension connection for extended keypad will be implemented in i the future GXP 2000 User Manual Grandstream Networks Inc 10 100 Switch LAN port for connecting to Ethernet Support PoE NEcE 802 3af Draws power from both spare line and signal line PC 10 100 Switch port for connecting PC POWER 5V power port HEADSET 3 5mm Headset port 2 3 Wall Mount GXP 2000 can be wall mounted There are two wall mount holes on the bottom of the GXP 2000 main body Top Wall Mount hole Bottom Wall Mount hole User can simply place the device against the wall with two holes placed to the fixed hanger position on the wall Handset __ Rest Tab Tab with Tab with extension down extension up After wall mounting the main body of GXP 2000 user will need to pull out the tab extension downward from handset cradle on the top of the handset rest and rotate the tab and plug it into the slot with the extension up for handset holding 2 4 Safety Compliances The GXP 2000 phone is compliant with various safety standards including FCC CE Its power adaptor is compliant with UL standard The phone should only be operated with the universal po
39. uarters of a second when voicemail server sends message waiting information to GXP 2000 4 3 11 Mute and Delete When in conversation with an ACTIVE LINE pressing MUTE DEL will mute the conversation that is you can hear the other party but the other party cannot hear you Pressing the button again will resume the conversation When dialing a number press MUTE DEL will delete the last entered digit 4 3 12 Speed Dial There are 7 speed dial buttons each can be configured with a different account to dial A vertical rectangle pad on the keypad is provided to label Speed Dial numbers 18 GXP 2000 User Manual Grandstream Networks Inc When an incoming call arrives while all of the 4 LINE 1 4 channels are in use the speed dial buttons will be selected as LINE indicators When any one of the 7 functions keys are associated with a call they function as LINE keys otherwise they function as speed dial keys So when LINE 5 is in use you cannot use speed dial 1 but speed dial 2 7 still work 19 GXP 2000 User Manual Grandstream Networks Inc 4 4 Call Features GXP 2000 series phone supports a list of call features Caller ID Block or Anonymous Call Disable Enable Call Waiting Call Forward on Busy Delay or Unconditional etc Following table shows the call features of GXP 2000 series phone Key Call Features 30 Block Caller ID for all subsequent calls 31 Send Caller ID
40. useful for ITSP Internet Telephone Service Provider Select the ATA to report the log level Default is NONE The level is one of DEBUG INFO WARNING or ERROR Syslog messages are sent based on the following events e product model version on boot up INFO level e NAT related info INFO level e sent or received SIP message DEBUG level e SIP message summary INFO level e inbound and outbound calls INFO level e registration status change INFO level e negotiated codec INFO level e Ethernet link up INFO level e SLIC chip exception WARNING and ERROR levels e memory exception ERROR level The Syslog uses USER facility In addition to standard Syslog payload it contains the following components GS_LOG device MAC address error code error message Here is an example May 19 02 40 38 192 168 1 14 GS_LOG 00 0b 82 00 a1 be 000 Ethernet link is up Individual Account Settings 27 GXP 2000 User Manual Grandstream Networks Inc Account Active Account Name SIP Server Outbound Proxy SIP User ID Authenticate ID Authenticate Password Name Use DNS SRV User ID is Phone Number SIP Registration Unregister on Reboot Register Expiration Local SIP port This field indicates whether the account is active or not The default value for the primary account Account 1 is Yes The default values for the other three accounts are No A name to identify an account which will be disp
41. wer adaptor provided with the package Damages to the phone caused by using other unsupported power adaptors are not covered by the manufacturer s warranty 6 GXP 2000 User Manual Grandstream Networks Inc 2 5 Warranty Grandstream has a reseller agreement with our reseller customer End user should contact the company from whom you purchased the product for replacement repair or refund If you purchased the product directly from Grandstream contact your Grandstream Sales and Service Representative fora RMA Return Materials Authorization number Grandstream reserves the right to remedy warranty policy without prior notification Warning Please do not attempt to use a different power adaptor Using other power adaptor may damage the GXP 2000 and will void the manufacturer warranty Caution Changes or modifications to this product not expressly approved by Grandstream or operation of this product in any way other than as detailed by this User Manual could void your manufacturer warranty Information in this document is subject to change without notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of Grandstream Networks Inc GXP 2000 User Manual Grandstream Networks Inc 3 Product Overview GXP 2000 series IP phone is designed to be an enterprise telephone which could al
42. wo ways to set up the TFTP server to upgrade the firmware namely through voice menu prompt or via the GXP 2000 s Web configuration interface To configure the TFTP server via voice prompt follow section 5 1 with option 06 once set up the TFTP IP address power cycle the device the firmware will be fetched once the device boots up To configure the TFTP server via the Web configuration interface open up your browser to point at the IP address of the GXP 2000 Input the admin password to enter the configuration screen From there enter the TFTP server address in the designated field towards the bottom of the configuration screen Once the TFTP server is configured power cycle the GXP 2000 TFTP checking is only performed during the initial power up If the configured TFTP server is found and a new code image is available the GXP 2000 will attempt to retrieve the new image files by downloading them into the GXP 2000 s SRAM During this stage the GXP 2000 s LEDs will blink until the checking downloading process is completed Upon verification of checksum the new code image will then be saved into the Flash If TFTP fails for any reason e g TFTP server is not responding there are no code image files available for upgrade or checksum test fails etc the GXP 2000 will stop the TFTP process and simply boot using the existing code image in the flash 40 GXP 2000 User Manual Grandstream Networks Inc TFTP process may take as
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