ISDN phone on Vic2-2Bri-NT/TE card

[ANGELO DE MASI]

I installed a Vic2-2Bri-NT/TE on our 2851 with CME, when I attach an ISDN phone directly on Vic2-2Bri port I always get busy tone as soon as I pick up the phone. In the log I read :

ISDN BR0/1/0 Q931: TX -> DISCONNECT pd = 8 callref 0x84

Cause i = 0x829C - Invalid number format (incomplete number)

From other IP phone connected on CME I can call the isdn phone, i can also call the isdn call from outside. More over If if configure connection plar on voice port, when I pick up the isdn phone i can call the number setted as connection plar, even when it is an external number.

But i can't still make a call directly from the isdn phone without connection plar because when i pick up the handset I soon get busy tone.

Please could anyone give me the right advice?

Thank you very much in advance.

Best regards.

angelo

[paolo bevilacqua]

You need to include the relevant configuration and complete trace.

[ANGELO DE MASI]

Hi Paolo, first of all thanks for you reply.

Attached there is my CME config, I just omitted all non relevant configuration. I also attached the trace of picking up the isdn phone and the show isdn status output. I hope this will help.

Regards

angelo

[paolo bevilacqua]

Hi, the phone doesn't send a number when going off-hook He would expect dial-tone instead.

Try composing the number first, then going off-hook or press dial button if it has one.

[ANGELO DE MASI]

Hi, if i compose the number first as you suggest, the phone makes the call correctly. How could I have dial-tone as expected when going off-hook? Is it likely an issue of the phone?

[paolo bevilacqua · Accepted solution]

Try "isdn overlap-receiving" under bri interface.

But more tricks may be needed. It is really better to dial en-block from on-hook.

By the way if you configure "line-power"  maybe the ISDN phone will work without his own PS.

[ANGELO DE MASI]

Hi Paolo,

configuring "isdn overlap-receiving" on bri interfaces it works well, I get dial-tone off-hook and then i can make call as usual from isdn phone. I just figuredthet after last digit it makes too much time to start the call, but this is not a big problem.

Thank you very much for your precious collaboration.

I hope rated tihis post correctly.

Regards

angelo

[paolo bevilacqua]

You can change the timer in overlap-receving.

Thanks for the nice rating and good luck!