Dear Tony, These debugs show the signaling between the Asterisk and an X-Lite phone that is registered with it? I don't see the SIP dialog between the CUCM and the Asterisk. The problem should lie there.
Regards Sreekanth On 5 July 2018 at 17:12, Tony Kasule <[email protected]> wrote: > Dear Sreekanth. > > Thanks for your responses. > > Please find my traces attached. The call from cisco to asterisk is fine, > asterisk to cisco has no audio, i have attached both traces. > > regards, > > > On Thu, Jul 5, 2018 at 9:44 AM, Sreekanth <[email protected]> wrote: > >> Dear Wilson, >> >> On 5 July 2018 at 11:56, Tony Kasule <[email protected]> wrote: >> >>> Dear Sreekanth, >>> >>> Thanks for your response. >>> >>> When I enabled MTP on the cisco call manager, I could no longer get >>> audio even o the cisco to asterisk calls (that were working before). Audio >>> was restored when I disabled MTP option on the call manager. I later came >>> to learn that the MTP option is not required when using he same codec both >>> sides. >>> >> >> MTPs are only required for functions such as dtmf mismatch and >> packetization mismatches between the 2 legs, or if you'd like to force >> Early Offer. The CUCM will invoke an MTP on its own if the call requires it. >> >> >>> I also checked on the cisco 7945 phone and during the call from asterisk >>> to cisco (which has no audio) and I noticed that Sender Packets is counting >>> and incrementing but Receiver Packets is 0. Does this mean that the cisco >>> phone is not receiving any packets, and if so, why? >>> >> >> What is the remote IP address and port? Yes this means that packets are >> not making it from remote end to the phone. >> >> >>> In the asterisk SIP debug, i saw Content-Length: 0 in the exchanges but >>> I wonder what would cause that. >>> >> >> Which message had the Content length 0? Can you paste a snippet here? >> >> >>> >>> Lastly, the SDP IP addresses appear to be ok. I only see the 2 IPs of >>> the devices communicating. I also went to asterisk's rtp.conf and disabled >>> strictrtp but no joy yet. Asterisk to cisco calls are silent yet cisco to >>> asterisk calls are ok. >>> >>> >> If you could paste the entire SIP dialog debug here, we can take a look >> to see what exactly is going on in the exchange. >> >> >>> Thanks for your help in advance. >>> >>> Regards, >>> wilson >>> >>> >>> >> Thanks >> Sreekanth >> >> >>> On Thu, Jul 5, 2018 at 8:30 AM, Sreekanth <[email protected]> wrote: >>> >>>> Tony, >>>> Are you seeing a complete SIP dialog between Asterisk and CUCM when >>>> making the calls from Asterisk towards the phone? Are the IPs and ports >>>> advertised in the SDP correct? >>>> >>>> I would start by taking a packet capture at the gateway or asterisk to >>>> see if 2 way RTP is flowing between them. If you enable MTP then you can >>>> also enable a pcap on the CUCM where the MTP is located. >>>> This would help isolate where the packets are being lost. >>>> >>>> Regards >>>> Sreekanth >>>> >>>> On 5 July 2018 at 10:52, Tony Kasule <[email protected]> wrote: >>>> >>>>> Dear Friends, >>>>> >>>>> I have CUCM 11 and Cisco gateway at my organisation where I am trying >>>>> to add a small asterisk call center. >>>>> >>>>> I created a SIP trunk between CUCM and Asterisk 15.4 on Centos 7 and >>>>> also did the same at the gateway. When I call from the PSTN to a dial-peer >>>>> that is mapped to asterisk, the call goes through well and we each each >>>>> other. However, when I call from asterisk to the PSTN, The call goes >>>>> through but there is total silence. >>>>> >>>>> Same issue with asterisk-CUCM. When I call from the Call manager to >>>>> asterisk, its fine but asterisk to cisco extension, there is no audio on >>>>> answering the call. >>>>> >>>>> I have been perplexed by this scenario. I extensively read online, >>>>> turned MTP on and off (at the sip trunk in CUCM), tried nat=yes and nat=no >>>>> at asterisk side etc but no joy yet. >>>>> >>>>> Has anyone else experiences this and any pointers on how to have it >>>>> resolved? >>>>> >>>>> Thank you so much. >>>>> >>>>> Timothy >>>>> >>>>> _______________________________________________ >>>>> cisco-voip mailing list >>>>> [email protected] >>>>> https://puck.nether.net/mailman/listinfo/cisco-voip >>>>> >>>>> >>>> >>> >> >
_______________________________________________ cisco-voip mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-voip
