Cisco Systems OL-8148-01 User's Manual
Contents
1. Full 1 Starts at approximately 1 2 brightness changes to full brightness when the phone negotiates additional power Note amp When a phone is powered with a method that does not support full brightness for the phone screen the phone Brightness control Settings gt User Preferences gt Brightness will not allow you to set the brightness to the maximum value Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones EN OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Providing Power to the Phone W Power Outage Your accessibility to emergency service through the phone is dependent on the phone being powered If there is an interruption in the power supply Service and Emergency Calling Service dialing will not function until power is restored In the case of a power failure or disruption you may need to reset or reconfigure equipment before using the Service or Emergency Calling Service dialing Obtaining Additional Information about Power For related information about power refer to the documents shown in Table 2 3 These documents provide information about these topics Cisco switches that work with the Cisco Unified IP Phone 7970 Series The Cisco IOS releases that support bidirectional power negotiation Other requirements and restrictions regarding power Table 2 3 Related Documentation fo2. Adding Phones with Auto Registration and TAPS page 2 13 Adding Phones with Cisco Unified CallManager Administration page 2 14 Adding Phones with BAT page 2 15 Adding Phones with Auto Registration and TAPS TAPS the Tool for Auto Registered Phones Support works with the Bulk Administration Tool BAT to update a batch of phones that were already added to the Cisco Unified CallManager database with dummy MAC addresses You use TAPS to update MAC addresses and download pre defined configurations for phones OL 8148 01 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones n Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HI Adding Phones to the Cisco Unified CallM anager Database You can add phones with auto registration and TAPS without first gathering MAC addresses from phones Note You should use auto registration and TAPS to add less than 100 phones to your network To add more than 100 phones to your network use the Bulk Administration Tool BAT See the Adding Phones with BAT section on page 2 15 To implement TAPS you or the end user dial a TAPS directory number and follow voice prompts When the process is complete the phone will have downloaded its directory number and other settings and the phone will be updated in Cisco Unified CallManager Administration with the correct MAC address Auto registration
3. Note You can also assign an alternative TFTP server to use instead of the one assigned by DHCP See the Network Configuration Menu section on page 4 7 See the Resolving Startup Problems section on page 9 2 6 Requesting the CTL file The TFTP server stores the certificate trust list CTL file This file contains a list of Cisco Unified CallManagers and TFTP servers that the phone is authorized to connect to It also contains the certificates necessary for establishing a secure connection between the phone and Cisco Unified CallManager Refer to the Cisco Unified CallManager Security Guide Configuring the Cisco CTL Client chapter 7 Requesting the Configuration File The TFTP server has configuration files which define parameters for connecting to Cisco Unified CallManager and other information for the phone See the Understanding Phone Configuration Files section on page 2 8 See the Resolving Startup Problems section on page 9 2 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones 210 E OL 8148 01 Chapter2 Preparing to Install the Cisco Unified IP Phone on Your Network Adding Phones to the Cisco Unified CallManager Database i Table 2 4 Cisco Unified IP Phone Startup Process continued Process Step Description Related Topics 8 Contacting Cisco The configuration file defines
4. how the Cisco See the Resolving Unified CallManager Unified IP Phone communicates with Cisco Startup Problems Unified CallManager and provides a phone with section on page 9 2 its load ID After obtaining the file from the TFTP server the phone attempts to make a connection to the highest priority Cisco Unified CallManager on the list If security is implemented the phone makes a TLS connection Otherwise it makes a non secure TCP connection If the phone was manually added to the database Cisco Unified CallManager identifies the phone If the phone was not manually added to the database and auto registration is enabled in Cisco Unified CallManager the phone attempts to auto register itself in the Cisco Unified CallManager database Note Auto registration is disabled when security is enabled on Cisco Unified CallManager In this case the phone must be manually added to the Cisco Unified CallManager database Adding Phones to the Cisco Unified CallM anager Database Before installing the Cisco Unified IP phone you must choose a method for adding phones to the Cisco Unified CallManager database These sections describe the methods Adding Phones with Auto Registration page 2 12 Adding Phones with Auto Registration and TAPS page 2 13 Adding Phones with Cisco Unified CallManager Administration page 2 14 Adding Phones with BAT page 2 15 Cisco Unified IP Phone Administration Guide for Cisco Uni
5. must be enabled in Cisco Unified CallManager Administration System gt Cisco CallManager for TAPS to function Note Cisco Unified CallManager automatically disables auto registration if you configure the cluster wide security mode for authentication and encryption through the Cisco CTL client Refer to Cisco Unified CallManager Bulk Administration Guide for detailed instructions about BAT and about TAPS Related Topics e Adding Phones with Auto Registration page 2 12 Adding Phones with Cisco Unified CallManager Administration page 2 14 Adding Phones with BAT page 2 15 Adding Phones with Cisco Unified CallM anager Administration You can add phones individually to the Cisco Unified CallManager database using Cisco Unified CallManager Administration To do so you first need to obtain the MAC address for each phone For information about determining a MAC address see the Determining the MAC Address of a Cisco Unified IP Phone section on page 2 18 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones e OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Adding Phones to the Cisco Unified CallManager Database i After you have collected MAC addresses in Cisco Unified CallManager Administration choose Device gt Phone and click Add New to begin For complete instructions and conceptual informat
6. system Configuration file and CTL file via TFTP service Phone registration Call preservation so that a media session continues if signaling is lost between the primary CallManager and a phone Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones 2 2 OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Understanding Interactions with Other Cisco Unified IP Communications Products Mi For information about configuring Cisco Unified CallManager to work with the IP devices described in this chapter refer to Cisco Unified CallManager Administration Guide Cisco Unified CallManager System Guide and to Cisco Unified CallManager Security Guide For an overview of security functionality for the Cisco Unified IP Phone see the Understanding Security Features for Cisco Unified IP Phones section on page 1 11 Note If the Cisco Unified IP Phone model that you want to configure does not appear in the Phone Type drop down list in Cisco Unified CallManager Administration go to the following URL and install the latest support patch for your version of Cisco Unified CallManager http www cisco com kobayashi sw center sw voice shtml Related Topic Telephony Features Available for the Phone page 5 2 Understanding How the Cisco Unified IP Phone Interacts with the VLAN The Cisco Unified IP Phone 7970 Series hav
7. without first gathering MAC addresses from the phones Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Adding Phones to the Cisco Unified CallManager Database i Quickly enter phones into the Cisco Unified CallManager database and modify any settings such as the directory numbers from Cisco Unified CallManager Move auto registered phones to new locations and assign them to different device pools without affecting their directory numbers Note You should use auto registration to add less than 100 phones to your network To add more than 100 phones to your network use the Bulk Administration Tool BAT See the Adding Phones with BAT section on page 2 15 In some cases you might not want to use auto registration for example if you want to assign a specific directory number to the phone or if you plan to implement authentication or encryption as described in Cisco Unified CallManager Security Guide For information about enabling auto registration refer to Enabling Auto Registration in the Cisco Unified CallManager Administration Guide Note Cisco Unified CallManager automatically disables auto registration if you configure the cluster wide security mode for authentication and encryption through the Cisco CTL client Related Topics
8. CHAPTER Preparing to Install the Cisco Unified IP Phone on Your Netw ork Cisco Unified IP Phones enable you to communicate using voice over a data network To provide this capability the IP Phones depend upon and interact with several other key Cisco IP Telephony and network components including Cisco Unified CallManager DNS and DHCP servers TFTP servers media resources Cisco prestandard PoE and so on This chapter focuses on the interactions between the Cisco Unified IP Phone 7970 Series and Cisco Unified CallManager DNS and DHCP servers TFTP servers and switches It also describes options for powering phones For related information about voice and IP communications refer to this URL http www cisco com en US partner products sw voicesw index html This chapter provides an overview of the interaction between the Cisco Unified IP Phone 7970 Series and other key components of the Voice over IP VoIP network It includes these topics Understanding Interactions with Other Cisco Unified IP Communications Products page 2 2 Providing Power to the Phone page 2 4 Understanding Phone Configuration Files page 2 8 Understanding the Phone Startup Process page 2 9 Adding Phones to the Cisco Unified CallManager Database page 2 11 OL 8148 01 Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5 0 SCCP Cisco Unified IP Phones Chapter 2 Preparing to Install the Cisco Unified IP Pho
9. Phone is connected to a Cisco switch the switch next informs the phone of the voice VLAN defined on the switch port The phone needs to know its VLAN membership before it can proceed with the Dynamic Host Configuration Protocol DHCP request for an IP address See the Network Configuration Menu section on page 4 7 See the Resolving Startup Problems section on page 9 2 4 Obtaining an IP Address If the Cisco Unified IP Phone is using DHCP to obtain an IP address the phone queries the DHCP server to obtain one If you are not using DHCP in your network you must assign static IP addresses to each phone locally See the Network Configuration Menu section on page 4 7 See the Resolving Startup Problems section on page 9 2 Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Netw ork HI Understanding the Phone Startup Process Table 2 4 Cisco Unified IP Phone Startup Process continued Process Step Description Related Topics 5 Accessing a TFTP Server In addition to assigning an IP address the DHCP server directs the Cisco Unified IP Phone to a TFTP Server If the phone has a statically defined IP address you must configure the TFTP server locally on the phone the phone then contacts the TFTP server directly
10. _registration_protocol parameter to SCCP Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 PE Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HI Determining the MAC Address ofa Cisco Unified IP Phone To do so from Cisco Unified CallManager Administration choose System gt Enterprise Parameters 2 Install the phones 3 Change the auto_registration_protocol parameter to SIP 4 Auto register the SIP phones Determining the MAC Address of a Cisco Unified IP Phone You can determine the MAC address for a phone in any of these ways From the phone choose Settings gt Model Information and look at the MAC Address field Look at the MAC label on the back of the phone Display the web page for the phone and click the Device Information hyperlink For information about accessing the web page see the Accessing the Web Page for a Phone section on page 8 2 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones 2 18 OL 8148 01
11. ated and the CTL file on the phone has a valid certificate for Cisco Unified CallManager the phone establishes a TLS connection to Cisco Unified CallManager Otherwise the phone establishes a TCP connection Note If the device security mode in the configuration file is set to Authenticated or Encrypted but the phone has not received a CTL file the phone will continuously try to obtain a CTL file so that it can register securely If you configure security related settings in Cisco Unified CallManager Administration the phone configuration file will contain sensitive information To ensure the privacy of a configuration file you must configure it for encryption For detailed information refer to the Configuring Encrypted Phone Configuration Files chapter in Cisco Unified CallManager Security Guide A phone accesses a default configuration file named Xm1Default cnf xml from the TFTP server when these conditions exist e You have enabled auto registration in Cisco Unified CallManager The phone has not been added to the Cisco Unified CallManager Database The phone is registering for the first time If auto registration is not enabled and the phone has not been added to the Cisco Unified CallManager Database the phone registration request will be rejected In this case the phone will reset and attempt to register repeatedly If the phone has registered before the phone will access the configuration file named SEPmac_addre
12. ble that connects the phone to the switch Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 PEN Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HZ Providing Power to the Phone Table 2 2 Power Consumption and Display Brightness for Power Configurations Max Power Phone Consumed Screen Phone Model Power Configuration from a Switch Brightness Cisco Unified Cisco prestandard PoE from a switch that supportsa 6 3 W Approx 1 2 IP Phone maximum of 7 W power per port with bidirectional 7970G power negotiation enabled Cisco prestandard PoE from a Cisco Switch that 6 3 W Approx 1 2 supports 7 W or 15 4 W power per port without bidirectional power negotiation IEEE 802 3af Class 3 power from a Cisco switch 6 3 W Approx 1 2 without bidirectional power negotiation IEEE 802 3af Class 3 power from a third party switch 6 3 W Approx 1 2 IEEE 802 3af Class 3 power from a Cisco switch with 10 25 W Full bidirectional power negotiation enabled Cisco prestandard PoE from a Cisco Switch that 10 25 W Full supports 15 4 W power per port with bidirectional power negotiation enabled External power Full Cisco Unified IEEE 802 3af Class 3 power from a Cisco switch with 15 4 W Near full IP Phone or without bidirectional power negotiation enabled or 7971G GE from a third party switch External power
13. e an internal Ethernet switch enabling forwarding of packets to the phone and to the access port and the network port on the back of the phone If a computer is connected to the access port the computer and the phone share the same physical link to the switch and share the same port on the switch This shared physical link has the following implications for the VLAN configuration on the network The current VLANs might be configured on an IP subnet basis However additional IP address might not be available to assign the phone to the same subnet as other devices connect to the same port Data traffic present on the data native VLAN may reduce the quality of Voice over IP traffic Network security may indicate a need to isolate the VLAN voice traffic from the VLAN data traffic OL 8148 01 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HI Providing Power to the Phone You can resolve these issues by isolating the voice traffic onto a separate VLAN The switch port that the phone is connected to would be configured to have separate VLANs for carrying Voice traffic to and from the IP phone auxiliary VLAN on the Cisco Catalyst 6000 series for example Data traffic to and from the PC connected to the switch through the access port of the IP phone native VLAN Isola
14. fied CallManager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 a 21 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HI Adding Phones to the Cisco Unified CallM anager Database Table 2 5 provides an overview of these methods for adding phones to the Cisco Unified CallManager database Table 2 5 Methods for Adding Phones to the Cisco Unified CallManager Database Requires MAC Method Address Notes Auto registration No Provides no control over directory number assignment to phone Not available when security or encryption is enabled Auto registration No Requires auto registration and the Bulk with TAPS Administration Tool BAT updates the Cisco Unified CallManager database with the MAC address and DNs for the device when user calls TAPS from the phone Using the Cisco Yes Must add phones individually Unified CallManager Administration Using BAT Yes Can add groups of same model of phone Can schedule when phones are added to the Cisco Unified CallManager database Adding Phones with Auto Registration By enabling auto registration before you begin installing phones you can Automatically add a Cisco Unified IP Phone to the Cisco Unified CallManager database when you physically connect the phone to your IP telephony network During auto registration Cisco Unified CallManager assigns the next available sequential directory number to the phone Add phones
15. ion about Cisco Unified CallManager refer to Cisco Unified CallManager Administration Guide and to Cisco Unified CallManager System Guide Related Topics Adding Phones with Auto Registration page 2 12 Adding Phones with Auto Registration and TAPS page 2 13 Adding Phones with BAT page 2 15 Adding Phones with BAT The Cisco Bulk Administration Tool BAT is a plug in application for Cisco Unified CallManager that enables you to perform batch operations including registration on multiple phones Before you can add phones using BAT only not in conjunction with TAPS you must obtain the MAC address for each phone For information about determining a MAC address see the Determining the MAC Address of a Cisco Unified IP Phone section on page 2 18 For detailed instructions about using BAT refer to Cisco Unified CallManager Administration Guide and to Cisco Unified CallManager Bulk Administration Guide Related Topics e Adding Phones with Auto Registration page 2 12 Adding Phones with Auto Registration and TAPS page 2 13 Adding Phones with Cisco Unified CallManager Administration page 2 14 OL 8148 01 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones n Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network HI Using Cisco Unified IP Phones with Different Protocols Using Cisco Unified IP Phones with Different Protoc
16. ne on Your Network W Understanding Interactions with Other Cisco Unified IP Communications Products Using Cisco Unified IP Phones with Different Protocols page 2 16 Determining the MAC Address of a Cisco Unified IP Phone page 2 18 Understanding Interactions with Other Cisco Unified IP Communications Products To function in the IP telephony network the Cisco Unified IP Phone must be connected to a networking device such as a Cisco Catalyst switch You must also register the Cisco Unified IP Phone with a Cisco Unified CallManager system before sending and receiving calls This section includes these topics Understanding How the Cisco Unified IP Phone Interacts with Cisco Unified CallManager page 2 2 Understanding How the Cisco Unified IP Phone Interacts with the VLAN page 2 3 Understanding How the Cisco Unified IP Phone Interacts with Cisco Unified CallM anager Cisco Unified CallManager is an open and industry standard call processing system Cisco Unified CallManager software sets up and tears down calls between phones integrating traditional PBX functionality with the corporate IP network Cisco Unified CallManager manages the components of the IP telephony system the phones the access gateways and the resources necessary for such features as call conferencing and route planning Cisco Unified CallManager also provides Firmware for phones Authentication and encryption if configured for the telephony
17. ols The Cisco Unified IP Phone can operate with SCCP Skinny Client Control Protocol or SIP Session Initiation Protocol You can convert a phone that is using one protocol for use with the other protocol This section includes these topics Converting a New Phone from SCCP to SIP page 2 16 Converting an In Use Phone from SCCP to SIP page 2 17 Converting an In Use Phone from SIP to SCCP page 2 17 Deploying a Phone in an SCCP and SIP Environment page 2 17 Converting a New Phone from SCCP to SIP A new unused phone is set for SCCP by default To convert this phone to SIP perform these steps Procedure Step1 Take one of these actions To auto register the phone set the Auto Registration Phone Protocol parameter in Cisco Unified CallManager Administration to SIP To provision the phone using the Bulk Administration Tool BAT choose the appropriate phone model and choose SIP from the BAT To provision the phone manually make the appropriate changes for SIP on the Phone Configuration page in Cisco Unified CallManager Administration Refer to Cisco Unified CallManager Administration Guide for detailed information about Cisco Unified CallManager configuration Refer to Cisco Unified CallManager Bulk Administration Guide for detailed information about using the BAT Step2 Ifyou are not using DHCP in your network configure the network parameters for the phone Cisco Unified IP Phone Administration Guide f
18. or Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones 2 16 OL 8148 01 Chapter2 Preparing to Install the Cisco Unified IP Phone on Your Network Using Cisco Unified IP Phones with Different Protocols il See the Configuring Startup Network Settings section on page 3 14 Step3 Power cycle the phone Converting an In Use Phone from SCCP to SIP You can use the Bulk Administration Tool BAT to convert a phone that is in use in your network from SCCP to SIP To access BAT from Cisco Unified CallManager Administration choose Bulk Administration gt Phones gt Migrate Phones gt SCCP to SIP For detailed information refer to Cisco Unified CallManager Bulk Administration Guide Converting an In Use Phone from SIP to SCCP To convert a phone that is in use in your network from SIP to SCCP perform these steps For more information Cisco Unified CallManager Administration Guide Procedure Step1 In Cisco Unified CallManager Administration delete the existing SIP phone from the Cisco Unified CallManager database Step2 In Cisco Unified CallManager Administration create the phone as an SCCP phone Step3 Power cycle the phone Deploying a Phone in an SCCP and SIP Environment To deploy Cisco Unified IP Phones in an environment that includes SCCP and SIP and in which the Cisco Unified CallManager Auto Registration parameter is SCCP perform these general steps 1 Set the Cisco Unified CallManager auto
19. r Power Document Topics URL PoE Solutions http www cisco com en US netsol ns340 ns394 ns 147 ns412 networking _solutions_package html Cisco Catalyst Switches http www cisco com univercd cc td doc product lan index htm Integrated Service Routers http www cisco com en US products hw routers index html Cisco IOS Software http www cisco com en US products swhosswrel products_ios_cisco_ios_ software_category_home html OL 8148 01 Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5 0 SCCP Cisco Unified IP Phones Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network W Understanding Phone Configuration Files Understanding Phone Configuration Files Configuration files for a phone are stored on the TFTP server and define parameters for connecting to Cisco Unified CallManager In general any time you make a change in Cisco Unified CallManager that requires the phone to be reset a change is made to the phone s configuration file automatically Configuration files also contain information about which image load the phone should be running If this image load differs from the one currently loaded on a phone the phone contacts the TFTP server to request the required load files These files are digitally signed to ensure the authenticity of the files source In addition if the device security mode in the configuration file is set to Authentic
20. ss cnf xml where mac_address is the MAC address of the phone Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones EN OL 8148 01 Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network Understanding the Phone Startup Process Understanding the Phone Startup Process When connecting to the VoIP network the Cisco Unified IP Phone goes through a standard startup process as described in Table 2 4 Depending on your specific network configuration not all of these process steps may occur on your Cisco Unified IP Phone Table 2 4 Cisco Unified IP Phone Startup Process Process Step Description Related Topics 1 Obtaining Power from the Switch If a phone is not using external power the switch provides in line power through the Ethernet cable attached to the phone See the Providing Power to the Phone section on page 2 4 See the Resolving Startup Problems section on page 9 2 2 Loading the Stored Phone Image The Cisco Unified IP Phone has non volatile Flash memory in which it stores firmware images and user defined preferences At startup the phone runs a bootstrap loader that loads a phone image stored in Flash memory Using this image the phone initializes its software and hardware See the Resolving Startup Problems section on page 9 2 3 Configuring VLAN If the Cisco Unified IP
21. stall the Cisco Unified IP Phone on Your Network Providing Power to the Phone Mi Power Outage page 2 7 Obtaining Additional Information about Power page 2 7 Power Guidelines Table 2 1 provides guidelines that apply to external power and to PoE power for phones the Cisco Unified IP Phone 7970 Series Table 2 1 Guidelines for Powering the Cisco Unified IP Phone 7970 Series Power Type Guidelines External power The Cisco Unified IP Phone 7970G and 7971G GE use the Provided through the CP PWR CUBE 3 power supply CP PWR CUBE 3 external power supply PoE power Provided by The inline power patch panel WS PWR PANEL is not compatible a switch through the with the Cisco Unified IP Phone Ethernet cable attached to To ensure uninterruptible operation of the phone make sure that the the phone switch has a backup power supply Make sure that the CatOS or IOS version running on your switch supports your intended phone deployment Refer to the documentation for your switch for operating system version information Phone Pow er Consumption and Display Brightness The power consumed by a phone depends on its power configuration See Table 2 1 for a power configuration overview See Table 2 2 for the maximum power consumed by a phone for each configuration option and the correlating phone screen brightness level KA Note Power consumption values shown in the table include power losses in the ca
22. ting the phones on a separate auxiliary VLAN improves the quality of the voice traffic and allows a large number of phones to be added to an existing network where there are not enough IP addresses for each phone For more information refer to the documentation included with a Cisco switch You can also access related documentation at this URL http www cisco com univercd cc td doc product lan index htm Related Topics Understanding the Phone Startup Process page 2 9 e Network Configuration Menu page 4 7 Providing Power to the Phone Models in the Cisco Unified IP Phone 7970 Series can be powered with external power or with Power over Ethernet PoE External power is provided through a separate power supply PoE is provided by a switch through the Ethernet cable attached to a phone Note When you install a phone that is powered with external power connect the power supply to the phone and to a power outlet before you connect the Ethernet cable to the phone When you remove a phone that is powered with external power disconnect the Ethernet cable from the phone before you disconnect the power supply These sections provide more information about powering a phone Power Guidelines page 2 5 Phone Power Consumption and Display Brightness page 2 5 Cisco Unified IP Phone Administration Guide for Cisco Unified CallM anager 5 0 SCCP Cisco Unified IP Phones OL 8148 01 Chapter2 Preparing to In
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