Re: Call Forward All Issue - NO audio after forward

jesusjimenez1 · ‎02-23-2018

Hi Everybody!

I have an issue with CFA feature in cme 10.5

When an incoming call arrives to the CME from ISP (SIP Trunk) and this is redirected to mobile phone (sip trunk again), the call is connected but the audio is not present.

This problem applies with Call-Forward No Answer and Call-Forward All but not with Cosult Transfer.

Someone with this kind of problem?

Marcelo Morais · ‎02-23-2018

Hi @jesusjimenez1,

please take a look at the following post: CME CFAll Problem.

Hope this helps,

Marcelo Morais

jesusjimenez1 · ‎02-26-2018

Marcelo, thank you for your response. This case is different ´cause I can reach the mobile number across the CFA feature, but when the other party response the call there is not audio.

We are analizing the logs and we can see that the ISP is not responding with 200 OK (SDP) when I try to negotiate the Codecs but the say they never send this response even when the call is established with an normal outgoing call

To be honest I'm conffused in this case because I can't see the operation that is out of my CME

Any advice?

R0g22 · ‎02-26-2018

Do you have any logs/pcap that can be shared ?

Marcelo Morais · ‎02-26-2018

Hi @jesusjimenez1,

beyond what @R0g22 said ... you can add the following debug:

debug voice ccapi inout
debug ccsip messages
debug ccsip media

Note: you are probably using CUBE (for SIP with the ISP and with the Mobile Phone) and CME collocated, remember that the only supported combination for ISR G2 is SCCP SRST with CUBE !!!

Best regards,

Marcelo Morais

jesusjimenez1 · ‎02-26-2018

Hi and Thanks! I´m attaching the log file.

R0g22 · ‎02-27-2018

Router does a EO on the forwarded leg. There is 183/PRACK I believe for ring back but once the call is answered, the 200 OK from the ITSP does not have any caps -

007848: Feb 26 17:51:16.326: //539444/BD330DA3A326/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.0.101.250:5060;branch=z9hG4bK24501C24
From: <sip:8110019910@10.0.101.250>;tag=65A93F30-1308
To: <sip:0448113199560@189.209.19.20>;tag=gK00ac0f4f

Call-ID: BD3445F3-1A8611E8-A32A8368-CDC594AA@10.0.101.250
CSeq: 101 INVITE
Accept: application/sdp, application/isup, application/dtmf, application/dtmf-relay, multipart/mixed
Contact: <sip:0448113199560@189.209.19.20:5060>
Allow: INVITE,ACK,CANCEL,BYE,REGISTER,REFER,INFO,SUBSCRIBE,NOTIFY,PRACK,UPDATE,OPTIONS,MESSAGE,PUBLISH
User-Agent: Nortel SESM 17.0.22.6
P-Asserted-Identity: <sip:anonymous@201.158.135.140>
Supported: replaces
Content-Length: 0

Marcelo Morais · ‎02-27-2018

Hi @jesusjimenez1,

first of all ...

Topology
RouterCME <--> SIP Trunk <--> ISP
RouterCME <--> SIP Trunk <--> SBC1MTY03

Call

User A (8110019910) @ISP calls User B (8120889831) @CME ... User B (8120889831) @CME via Dial-Peer 13 "calls" (via a CFAll) User C (0448113199560) @MobileTrunk.

my understanding is correct?

Second ... could you please share your show run?

Best regards,

Marcelo Morais

pqueued · ‎02-27-2018

Actually sounds like a cut through audio issue... can you disable rel1xx on cube and send prack for all 1xx messages on the trunk from UCM?

R0g22 · ‎02-27-2018

there is no cucm.

jesusjimenez1 · ‎02-27-2018

This is a CME 10.5

jesusjimenez1 · ‎05-16-2018

Thanks a lot to everyone! I found a solution, well actually was an error from ISP, they were appliyng a NAT in their SONUS which didn´t recognize the peers from/to the call. After several hours of diagnostic and tshoot they were able to solve it

So, again, thanks for your time!