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MODEL : KX-TDA0180NE KX-TDA0181NE

Panasonic. MODEL : KX-TDA0180NE KX-TDA0181NE. SERVICE HINT FOR TDA LCOT END-CALL DELAY . BACKGROUND LCOT 8 (KX-TDA0180NE) and LCOT 16 (KX-TDA0181NE) analogue trunk cards do not feature active CPC (Calling Party Control) detection circuitry as standard. . SYMPTOM

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MODEL : KX-TDA0180NE KX-TDA0181NE

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  1. Panasonic MODEL : KX-TDA0180NE KX-TDA0181NE SERVICE HINT FOR TDA LCOT END-CALL DELAY BACKGROUND LCOT 8 (KX-TDA0180NE)and LCOT 16 (KX-TDA0181NE)analogue trunk cards do not feature active CPC (Calling Party Control) detection circuitry as standard. SYMPTOM The CO line will not promptly clear when caller hangs-up. Both KX-TDA0180NE (LCOT 8) and KX-TDA0181NE (LCOT 16) analogue trunk cards are affected . Example: In a TDA PBX equipped with a Voice Mail system; when the incoming call is terminated, the CO line will not clear immediately, but remain busy until the network clears down. In this case the delay will unnecessarily consume Voice Mail memory. SERVICE HINT CAUSE CPC detection circuitry is not incorporated into the LCOT card, and therefore the card does not recognise when an external call is terminated. This results in the CO line remaining busy until the network timeout period is reached. HOW TO IDENTIFY CPC detection circuitry is not incorporated on any mass production KX-TDA0180NE or KX-TDA0181NE card. OPERATION End-Call Delay Modification For KX-TDA0180NE And KX-TDA0181NE Sheet 1 of 4 APPROVED Date ORIGINATOR Date CHECKED Date Andrew Poulsom 03/11/03 Allan Davies 03/11/03 Dominic Delaney 03/11/03 ISSUEDate 1 08/10/03 SERIALNO PWI-4-14-5-088 QPR 6-6-4 Issue 3

  2. Panasonic MODEL : KX-TDA0180NE KX-TDA0181NE SERVICE HINT FOR TDA LCOT END-CALL DELAY COUNTERMEASURE The problem detailed in this Service Hint can be attributed to the revision of the CPC signal detection circuit. This can be returned to a functioning state by the modification below: KX-TDA0180NE SERVICE HINT KX-TDA0181NE OPERATION End-Call Delay Modification For KX-TDA0180NE And KX-TDA0181NE Sheet 2 of 4 APPROVED Date ORIGINATOR Date CHECKED Date Andrew Poulsom 03/11/03 Allan Davies 03/11/03 Dominic Delaney 03/11/03 ISSUEDate 1 08/10/03 SERIALNO PWI-4-14-5-088 QPR 6-6-4 Issue 3

  3. Panasonic MODEL : KX-TDA0180NE KX-TDA0181NE KX-TDA0180NE COMPONENT POSITION COMPONENT VIEW BOTTOM VIEW Add PC4 (Channels A-H) PC4 Add D4 (Channels A-H) Change R14 (Channels A-H) Change R15 (Channels A-H) Q7 Remove Q7 (Channels A-H) Remove R28 (Channels A-H) SERVICE HINT FOR TDA LCOT END-CALL DELAY COUNTERMEASURE KX-TDA0180NE It is important to remember that the modification needs to be made to all eight channels: A-H. Note: The relevant components are located on both sides of the PCB. SERVICE HINT OPERATION End-Call Delay Modification For KX-TDA0180NE And KX-TDA0181NE Sheet 3 of 4 APPROVED Date ORIGINATOR Date CHECKED Date Andrew Poulsom 03/11/03 Allan Davies 03/11/03 Dominic Delaney 03/11/03 ISSUEDate 1 08/10/03 SERIALNO PWI-4-14-5-088 QPR 6-6-4 Issue 3

  4. Panasonic MODEL : KX-TDA0180NE KX-TDA0181NE KX-TDA0181NE COMPONENT POSITION COMPONENT VIEW BOTTOM VIEW Add PC4 (Channels A-P) PC4 Change R80 (Channels A-P) Q8 Remove Q8 (Channels A-P) PC4 Change R5 (Channels A-P) Q8 Add D1 (Channels A-P) SERVICE HINT FOR TDA LCOT END-CALL DELAY COUNTERMEASURE KX-TDA0181NE It is important to remember that the modification needs to be made on all sixteen channels: A-P. Note: The relevant components are located on both sides of the PCB. SERVICE HINT OPERATION End-Call Delay Modification For KX-TDA0180NE And KX-TDA0181NE Sheet 4 of 4 APPROVED Date ORIGINATOR Date CHECKED Date Andrew Poulsom 03/11/03 Allan Davies 03/11/03 Dominic Delaney 03/11/03 ISSUEDate 1 08/10/03 SERIALNO PWI-4-14-5-088 QPR 6-6-4 Issue 3

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