[cisco-voip] Cisco 8841/51 not sending DTMF...

Jonathan Charles jonvoip at gmail.com
Mon Jul 13 15:22:58 EDT 2015


OK, internal DTMF works... external does not... we are a SIP trunk to a
CUBE, and a SIP trunk to the provider... RFC 2833 all the way thru...

No ideas...


Jonathan

On Tue, Jul 7, 2015 at 7:28 PM, Ryan Huff <ryanhuff at outlook.com> wrote:

> Well it sounds like it may be a firmware thing if upgrading allowed dtmf
> over skinny to work (which was the more odd of the two issues).
>
> You could grab some pcap's to get a more clear picture.
>
> Thanks,
>
> Ryan
>
>
> -------- Original Message --------
> From: Jonathan Charles <jonvoip at gmail.com>
> Sent: Tuesday, July 7, 2015 08:20 PM
> To: Ryan Huff <ryanhuff at outlook.com>
> Subject: Re: [cisco-voip] Cisco 8841/51 not sending DTMF...
> CC: cisco-voip at puck.nether.net
>
> Just RTP-NTE on the gateway... verified dial peer matched...
>
> On Tue, Jul 7, 2015 at 7:03 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>
>> On the intetnal side, do your skinny ports have access to an mtp?
>>
>> On the external side, what DTMF signaling methods are you supporting?
>> Just rtp-nte?
>>
>> Do you have any other SIP phones at this site/cluster?
>>
>> Thanks,
>>
>> Ryan
>>
>>
>> -------- Original Message --------
>> From: Jonathan Charles <jonvoip at gmail.com>
>> Sent: Tuesday, July 7, 2015 07:44 PM
>> To: Ryan Huff <ryanhuff at outlook.com>
>> Subject: Re: [cisco-voip] Cisco 8841/51 not sending DTMF...
>> CC: cisco-voip at puck.nether.net
>>
>> I am SCCP to CUC; SIP to SIP for PSTN (SIP trunk to CUBE, SIP trunk to CL)
>>
>> On Mon, Jul 6, 2015 at 3:27 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>>
>>> Are you sip to cuc ab d the pstn? If so, what is your dtmf support in
>>> your trunks?
>>>
>>> Thanks,
>>>
>>> Ryan
>>>
>>>
>>> -------- Original Message --------
>>> From: Jonathan Charles <jonvoip at gmail.com>
>>> Sent: Monday, July 6, 2015 04:11 PM
>>> To: cisco-voip at puck.nether.net
>>> Subject: [cisco-voip] Cisco 8841/51 not sending DTMF...
>>>
>>> We have a site with new Cisco 8841 and 51 phones (CUCM 10.5.2), running
>>> 10.2.2.16, and they are not sending DTMF externally... or internally to
>>> voicemail.
>>>
>>> An IP Communicator does send DTMF without issue.
>>>
>>> Any known issues with these new phones?
>>>
>>>
>>>
>>>
>>> Jonathan
>>>
>>
>>
>
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