<div dir="ltr">That's great Tony. Thanks for the info.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 5 July 2018 at 18:57, Tony Kasule <span dir="ltr"><<a href="mailto:timotsmith@gmail.com" target="_blank">timotsmith@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Sreekanth,<br>
<br>
Thank you so much for helping me.<br>
<br>
My mac laptop where is soft phone is installed has an inbuilt firewall<br>
that was enabled. While troubleshooting, I couldn't ping my laptop<br>
from the call manager so I decided to disable the firewall and Voila!<br>
Everything worked. So, the issue was the firewall on my laptop.<br>
Unfortunately, I hadnt tested with a real phone or a phone on another<br>
laptop so I couldnt figure that out yesterday.<br>
<br>
Thanks!<br>
<br>
Regards,<br>
Tony<br>
<div class="HOEnZb"><div class="h5"><br>
On Thu, Jul 5, 2018 at 4:02 PM, Sreekanth <<a href="mailto:sknth.n@gmail.com">sknth.n@gmail.com</a>> wrote:<br>
> Dear Tony,<br>
><br>
> These debugs show the signaling between the Asterisk and an X-Lite phone<br>
> that is registered with it? I don't see the SIP dialog between the CUCM and<br>
> the Asterisk. The problem should lie there.<br>
><br>
> Regards<br>
> Sreekanth<br>
><br>
> On 5 July 2018 at 17:12, Tony Kasule <<a href="mailto:timotsmith@gmail.com">timotsmith@gmail.com</a>> wrote:<br>
>><br>
>> Dear Sreekanth.<br>
>><br>
>> Thanks for your responses.<br>
>><br>
>> Please find my traces attached. The call from cisco to asterisk is fine,<br>
>> asterisk to cisco has no audio, i have attached both traces.<br>
>><br>
>> regards,<br>
>><br>
>><br>
>> On Thu, Jul 5, 2018 at 9:44 AM, Sreekanth <<a href="mailto:sknth.n@gmail.com">sknth.n@gmail.com</a>> wrote:<br>
>>><br>
>>> Dear Wilson,<br>
>>><br>
>>> On 5 July 2018 at 11:56, Tony Kasule <<a href="mailto:timotsmith@gmail.com">timotsmith@gmail.com</a>> wrote:<br>
>>>><br>
>>>> Dear Sreekanth,<br>
>>>><br>
>>>> Thanks for your response.<br>
>>>><br>
>>>> When I enabled MTP on the cisco call manager, I could no longer get<br>
>>>> audio even o the cisco to asterisk calls (that were working before). Audio<br>
>>>> was restored when I disabled MTP option on the call manager. I later came to<br>
>>>> learn that the MTP option is not required when using he same codec both<br>
>>>> sides.<br>
>>><br>
>>><br>
>>> MTPs are only required for functions such as dtmf mismatch and<br>
>>> packetization mismatches between the 2 legs, or if you'd like to force Early<br>
>>> Offer. The CUCM will invoke an MTP on its own if the call requires it.<br>
>>><br>
>>>><br>
>>>> I also checked on the cisco 7945 phone and during the call from asterisk<br>
>>>> to cisco (which has no audio) and I noticed that Sender Packets is counting<br>
>>>> and incrementing but Receiver Packets is 0. Does this mean that the cisco<br>
>>>> phone is not receiving any packets, and if so, why?<br>
>>><br>
>>><br>
>>> What is the remote IP address and port? Yes this means that packets are<br>
>>> not making it from remote end to the phone.<br>
>>><br>
>>>><br>
>>>> In the asterisk SIP debug, i saw Content-Length: 0 in the exchanges but<br>
>>>> I wonder what would cause that.<br>
>>><br>
>>><br>
>>> Which message had the Content length 0? Can you paste a snippet here?<br>
>>><br>
>>>><br>
>>>><br>
>>>> Lastly, the SDP IP addresses appear to be ok. I only see the 2 IPs of<br>
>>>> the devices communicating. I also went to asterisk's rtp.conf and disabled<br>
>>>> strictrtp but no joy yet. Asterisk to cisco calls are silent yet cisco to<br>
>>>> asterisk calls are ok.<br>
>>>><br>
>>><br>
>>> If you could paste the entire SIP dialog debug here, we can take a look<br>
>>> to see what exactly is going on in the exchange.<br>
>>><br>
>>>><br>
>>>> Thanks for your help in advance.<br>
>>>><br>
>>>> Regards,<br>
>>>> wilson<br>
>>>><br>
>>>><br>
>>><br>
>>> Thanks<br>
>>> Sreekanth<br>
>>><br>
>>>><br>
>>>> On Thu, Jul 5, 2018 at 8:30 AM, Sreekanth <<a href="mailto:sknth.n@gmail.com">sknth.n@gmail.com</a>> wrote:<br>
>>>>><br>
>>>>> Tony,<br>
>>>>> Are you seeing a complete SIP dialog between Asterisk and CUCM when<br>
>>>>> making the calls from Asterisk towards the phone? Are the IPs and ports<br>
>>>>> advertised in the SDP correct?<br>
>>>>><br>
>>>>> I would start by taking a packet capture at the gateway or asterisk to<br>
>>>>> see if 2 way RTP is flowing between them. If you enable MTP then you can<br>
>>>>> also enable a pcap on the CUCM where the MTP is located.<br>
>>>>> This would help isolate where the packets are being lost.<br>
>>>>><br>
>>>>> Regards<br>
>>>>> Sreekanth<br>
>>>>><br>
>>>>> On 5 July 2018 at 10:52, Tony Kasule <<a href="mailto:timotsmith@gmail.com">timotsmith@gmail.com</a>> wrote:<br>
>>>>>><br>
>>>>>> Dear Friends,<br>
>>>>>><br>
>>>>>> I have CUCM 11 and Cisco gateway at my organisation where I am trying<br>
>>>>>> to add a small asterisk call center.<br>
>>>>>><br>
>>>>>> I created a SIP trunk between CUCM and Asterisk 15.4 on Centos 7 and<br>
>>>>>> also did the same at the gateway. When I call from the PSTN to a dial-peer<br>
>>>>>> that is mapped to asterisk, the call goes through well and we each each<br>
>>>>>> other. However, when I call from asterisk to the PSTN, The call goes through<br>
>>>>>> but there is total silence.<br>
>>>>>><br>
>>>>>> Same issue with asterisk-CUCM. When I call from the Call manager to<br>
>>>>>> asterisk, its fine but asterisk to cisco extension, there is no audio on<br>
>>>>>> answering the call.<br>
>>>>>><br>
>>>>>> I have been perplexed by this scenario. I extensively read online,<br>
>>>>>> turned MTP on and off (at the sip trunk in CUCM), tried nat=yes and nat=no<br>
>>>>>> at asterisk side etc but no joy yet.<br>
>>>>>><br>
>>>>>> Has anyone else experiences this and any pointers on how to have it<br>
>>>>>> resolved?<br>
>>>>>><br>
>>>>>> Thank you so much.<br>
>>>>>><br>
>>>>>> Timothy<br>
>>>>>><br>
>>>>>> ______________________________<wbr>_________________<br>
>>>>>> cisco-voip mailing list<br>
>>>>>> <a href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a><br>
>>>>>> <a href="https://puck.nether.net/mailman/listinfo/cisco-voip" rel="noreferrer" target="_blank">https://puck.nether.net/<wbr>mailman/listinfo/cisco-voip</a><br>
>>>>>><br>
>>>>><br>
>>>><br>
>>><br>
>><br>
><br>
</div></div></blockquote></div><br></div>