7960 calling PSTN number that is busy

[SALOscar]

Hello we have 7960 phones just installed, for calling a PSTN number we have a DID E1-PRI, outgoing/incoming calls are working great, the problem that we have is that when you dial to a PSTN number that does not exist or it's busy, the CallManager won't send the busy signal to the caller's phone, it just stay in silence for a minute and then it says: The call cannot be completed as dialed.....I turned on the debug on the router and I can see that the Phone company is sending me the correct code:
Bearer Capability i = 0x8090A3
Standard = CCITT
Transer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Calling Party Number i = 0x0081, '22504253'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '23372524'
Plan:Unknown, Type:Unknown
*Mar 19 22:18:53.035: ISDN Se1/0:15 Q931: RX <- SETUP_ACK pd = 8 callref = 0x83
EC
Channel ID i = 0xA9839F
Exclusive, Channel 31
*Mar 19 22:18:53.484: ISDN Se1/0:15 Q931: RX <- DISCONNECT pd = 8 callref = 0x8
3EC
Cause i = 0x8281 - Unallocated/unassigned number <----There is the disconnection cause sent by PTT

But the CCM just do nothing and don't send any message to the caller's phone. What should I check?

Thanks in advance for your reply.

 

[jerake75]

The device that is playing that "Your call cannot be completed as dialed" sounds like the Annunciator that comes with CCM (you have version 4.X?). Do you know for certain that this message is coming from the PSTN?...it really sounds like it's coming from the Annunciator. To check that, place a call to the number listed in your trace (a known bad number) and pull up the CCM trace. It should state that it's using Annunciator resources in the trace for that particular call.

Once you determine for certain that it's the Annunciator playing that message, if you want it to play busy signal, either pull the Annunciators out of your Media Resource Group that is assigned to your phones (the safer option) or you can delete your Annunciators completely out of CCM (not a huge deal, you'd have to add them back in and reconfigure them if you wanted them back).

HTH,

TMH

 

[PatrickIPT]

I had the same problem. It was solved with the following global command on the voice gateway:

voice call convert-discpi-to-prog

for background information see:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a0080111b58.shtml

 

[megaco]

Did adding voice call convert-discpi-to-prog solve the problem?

I work for myself - my website is

http://www.call.uk.net

 

[SALOscar]

Thank you PatrickIPT ..... It worked great!!!!!!

Thanks again!