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GSGC7 OPERATING INSTRUCTIONS

1. or 48 KHz DATA RATEAutomatic 56 or 64 KBits Sec File AP72 06 Issue 6 Page 3 ENGINEERING SET UPS The GSGC7 can be used to programme the set ups in the GSGC6 1U subrack In general the Grey MENU key is used to proceed to the next stage First press the Grey key At this stage anybody can set the viewing angle of the display When a suitable viewing angle has been set enter it by pressing the Grey key This viewing angle is not yet stored for future use but will remain fixed until the equipment is switched off After setting the viewing angle you will be asked for a password before any engineering set ups can be altered After entering the correct password you will be led through the available set ups These are as follows AUTO ANSWER2 9 Specifies number of rings to answer by 0 Manual Answer OUTGOING B CHANNELCan be B1 B2 or either INCOMING B CHANNELCan be B1 B2 or either MULTIPLE SUB NO This should be all digits including the area code SUB ADDRESS Up to 4 alphanumeric characters NEW EXT SWITCH NUMBERThis is the ISDN number that will be automatically dialled when the DC loop is closed on the rear panel of the GSGC6 ENCODE MODE Forces the Encoder mode SAMPLE RATEForces the Encoder sample rate DATA RATEMake call at 56 64 KBits Sec data rate DTMF DURATION Specified in hundredths of a second duration of each DTMF digit DTMF DC LOOPSpecifies DTMF code sent when DC loop made on rear panel of GSGC6 DTMF DETECT Sets the DTMF code requ
2. GSGC7 OPERATING INSTRUCTIONS GENERAL This unit has a standard keypad and 4 additional buttons It also has a 2 line by 16 character LCD display The display is used to prompt the user and to show various actions KEYPAD Each of the 0 to 9 keys has 3 or 2 letters of the alphabet printed next to them In some uses of these keys it is possible to use them to enter a particular letter This is done with a single press to produce the number 2 quick presses to produce the first letter of the group 3 quick presses to produce the 2nd letter of the group or 4 quick presses to produce the third A further press reverts to the number If you make an error while entering a number or a letter the CLEAR key can be used to erase the last digit MAKING CALLS DIRECTLY It is only necessary to enter the required number which will be displayed and when complete press the DIAL key If the call is successful the red ISDN LINE LED will illuminate and if you have called a number with a matching codec after a few seconds the CODEC OK LED will illuminate If for any reason the call is not successful the display will show the reason for failure A list of possible responses is shown later MAKING SWITCHS56 CALLS Only available with our G722 or MPEG G722 Codecs Normally directly dialled numbers will be dialled as ISDN64 calls If the system returns a non compatible message to the equipment the number will be immediately redialed as a switch56 call If ho
3. LE Called Number not suitable for DATA PROTOCOL ERROR Protocol Error CLEARED Any other cause ERROR NUMBERS 17 42 18 19 28 27 38 41 88 111 ALL OTHERS LIST OF ERROR NUMBERS PRESENTED BY THE TERMINAL ADAPTER OS Bus not responding 47Resources unavailable 1Unallocated number 49Quality of service unavailable 2No Route to specified network 50Requested facility not subscribed 3No route to destination 57Bearer capability not authorised 4Channel unacceptable BT only 58Bearer capability not available 6Channel unacceptable 63Service or option not available 7Call awarded and being delivered 65Bearer capability not implemented in an established channel 66Channel type not implemented 16Normal call clearing 69Requested facility not implemented 17User busy 70Only restricted digital information 18No user responding bearer capability is available 19No answer from user 79Service or option not implemented 21Call rejected 88Incompatible destination 22Number changed 111Protocol error unspecified 26Non selected user clearing 27Destination out of order 28Invalid number format 29Facility rejected 30Response to Status Inquiry 31 Normal unspecified 34No circuit channel available 38Network out of order 41 Temporary failure 42Switching equipment congestion 43 Access information discarded 44Requested circuit channel not available File AP72 06 Issue 6 Page 5 File AP72 06 Issue 6 Page 6
4. ed with names in the memory and if a match is found and a name has been given to that number then the name will be displayed instead of the number If a name or number is displayed pressing the DIAL button will call that number This makes it very easy to call back It is possible to clear this number by pressing the CLEAR key TO STORE NUMBERS IN MEMORY It is possible to store up to 30 frequently used numbers in the non volatile memory Each number can have associated with it an alphanumeric description or name Each number can also have stored with it note of whether it should dial as an ISDN64 call or as a SWITCHS6 Each number can also have stored with it the codec encode mode required along with the sample rate required Press MEMORY and use the lt and gt keys to locate the store you wish to use It is also possible to directly enter the number 1 30 of the memory you wish to use Now press MENU After informing you to press the Grey MENU key to proceed the display will show you the stored name if any At this stage it is possible to edit or add the name which may contain up to 16 characters After editing press the Grey key The display will now show the stored number which may contain up to 20 figures followed by a sign if subaddressing is used and a further 4 alphanumeric keys Edit this number and press the Grey key to proceed The display will now show if the number is required as ISDN64 or as SWITCHS56 T
5. his again can be edited before pressing the Grey key to proceed The display will now show the codec encode mode This has four options which can be scrolled using the lt gt keys The options are Follow Decode G722 MPEG APTX After pressing the Grey key the display will show the encode sample rate This has five options which can also be scrolled The options are Follow Decode 16 24 32 48 KHz The above procedure can be repeated for the other 29 stores File AP72 06 Issue 6 Page 2 TO MODIFY SET UP DURING A CALL These facilities are codec dependent Not all options are meaningful with all codecs If an unavailable selection is made the equipment will try to revert to an available mode When a call has been successfully connected and the RED LED is on it is possible to force the codec parameters It is possible to change the encode algorithm the sample rate and the data rate This is simply done by pressing the Grey key 1 2 or 3 times If pressed once the encode algorithm can be changed If pressed twice the sample rate can be changed and if pressed three times the data rate can be changed In each case you are only given a few seconds to make a change before the option is aborted The lt and gt keys are used to scroll through the options The option in view when the system times out is the selected option Available options are ENCODE ALGORITHMFollow Decoder G722 MPEG or APTX SAMPLE RATEFollow Decoder 16 24 32
6. ired to close the relay loop on the rear panel of the GSGC6 and to operate the GSGC7 sounder and lamps if enabled DTMF KEY PADEnables the GSGC7 key pad to send the DTMF code corresponding to the key pressed DTMF LAMP Makes the ISDN lamp flash on valid DTMF DTMF SOUNDER Makes the sounder operate on valid DTMF ISDN SOUNDER Makes the sounder operate with incoming call After the above parameters have been set they must be stored in the NVR Non Volatile Ram This is achieved by pressing the Green key when asked If the Red key is pressed the above set ups are aborted This action of pressing the Green key also stores the view angle that was entered before the password The set up is independent for each port on the GSGC6 If 2 codecs are fitted to the GSGC6 it is essential to repeat the set up using the second port It is possible to reset the microprocessor in the GSGC7 A reset switch has been fitted adjacent to the 15pin D connector This can be accessed by sliding off the plastic cover marked OPEN on the rear of the unit File AP72 06 Issue 6 Page 4 SYSTEM ERROR RESPONSES Unsuccessful calls will normally give one of the following responses in the display In addition the error number is also displayed DISPLAY MESSAGE REASON FOR FAILURE USER BUSY User Engaged NETWORK BUSY Network Engaged NO ANSWER Called Number does not answer INVALID NUMBER Number not recognised OUT OF ORDER Network or Destination out of order INCOMPATIB
7. wever you wish to force the equipment to make a switch56 call it is only necessary to hold the DIAL button for a few moments when the display will change to SWITCHS56 Then release the DIAL button while this message is displayed If you continue to hold the DIAL button you will notice that the display alternates between ISDN64 and SWITCH56 TO CLEAR THE CALL To clear the call it is necessary to press and hold the CLEAR button for about 2 seconds TO REDIAL THE LAST NUMBER To redial the last number used it is only necessary to press the DIAL button TO DIAL A NUMBER THAT HAS PREVIOUSLY BEEN STORED Press the MEMORY button You may directly enter the memory number 1 30 or use the lt and gt buttons to scroll through the memories The display will show the name in the memory if it has been stored or else the number itself When the correct memory has been found press the DIAL button to make the call File AP72 06 Issue 6 Page 1 TO ANSWER AN INCOMING CALL It is possible see engineering set ups to set this equipment to automatically answer an incoming call Ifthis has been done no action is required by the operator If set for manual answer simply press the DIAL button to answer the call CALLING NUMBER IDENTIFICATION CLD If your ISDN circuit has CLI enabled on it the display will indicate the calling party This is done normally by displaying the incoming calling number however this number is automatically compar

GSGC7 OPERATING INSTRUCTIONS

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