Cisco IP phones not receiving the caller number

[toma.nikolov96]

I  am having an issue with all of the Cisco IP phones not presenting the caller phone number but just "unknown number". 
The network infrastructure is as follows - we have two 2821 as MGCP Gateways for the CUCM, in which the phones are registered. 

The 2821 routers are with 12.4(13r)T IOS version and the CUCMs are running with system version 9.1.2.10000-28. 

We have some Ericson phones which are receiving calls ant there the caller phone is written down. 

Can someone help with any kind of advice. 

[Vaijanath Sonvane]

Hi Toma,

From configuration, it looks like you are using QSIG Protocol for E1 PRI integration. Are you integrating this PRI lines with Service Provider or other PBX?

Please try enabling "Redirecting Number IE Delivery - Inbound" parameter under PRI line configuration in CUCM,

If it doesn't work, can you post the logs for "debug isdn q931"  for your test call?

Thanks,

VS

Please rate if this is helpful.

[toma.nikolov96]

There is another Ericson system, I think, but i have no access or knowledge about it. 

I've enabled the option, but I am waiting for our custommer in order to test and send you the debugs. 

Kind regards, 

[toma.nikolov96]

Greetings, 

no change after enabling "Redirecting Number IE Delivery - Inbound" parameter

here is the output form thee debugging
Aug 11 14:37:36.953 EEST: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x159B
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA1839D
Preferred, Channel 29
Facility i = 0x9FAA068001008201008B0100A1100201010201553008820301B850860100
Progress Ind i = 0x8181 - Call not end-to-end ISDN, may have in-band info
Progress Ind i = 0xA190 - Reserved value
Called Party Number i = 0x81, '245'
Plan:ISDN, Type:Unknown
Shift to Codeset 4
Codeset 4 IE 0x31 i = 0x80
Aug 11 14:37:36.977 EEST: ISDN Se0/0/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0x959B
Channel ID i = 0xA9839D
Exclusive, Channel 29
Aug 11 14:37:36.977 EEST: ISDN Se0/0/0:15 Q931: TX -> ALERTING pd = 8 callref = 0x959B
Facility i = 0x9FAA06800100820100A117020101020101800F55726F6C6F677920646F63746F7273
Progress Ind i = 0x8088 - In-band info or appropriate now available



This is a call I've made to the a phone with number 245. 

Kind regards, 

[Michael Gerrard]

So is the call coming from the Ericsson or from a PSTN provider? Because it looks like from your debug above that the Calling Party Number is not being sent to you from the other end. In which case, there's nothing on the Cisco side you'll be able to do.

[Vaijanath Sonvane]

Hi Toma,

From the debug it looks like the Ericson or other system is not sending caller ID information. In this case, you can request administrator of other system to enable send caller ID information on the PRI lines. There is nothing more we can do on the Cisco end.

Thanks,

VS

Please rate if this is helpful.

[Abhay Singh Reyal]

Share the show run from the gateway and also the debugs.

Regards

Abhay

[Dennis Mink]

Is the caller ID and presentation working internally i.e. between phones or is it just external calls that have this behaviour?

[toma.nikolov96]

Just external phones calling from the outside - and only Cisco phones. 
From the inside no problem.