[cisco-voip] CUBE and LTI for MTPs

[Brian Meade]

dtmf-relay I believe should handle that find for you without the MTP.

On Mon, Mar 30, 2015 at 1:21 PM, Anthony Holloway <
avholloway+cisco-voip at gmail.com> wrote:

> Oooo, good question Brian.  It's my understanding that in order for the
> below specific call flow to work, an MTP is required for DTMF inter-working
> of inband to out-of-band.
>
> PSTN Caller Pushes DTMF ---> ITSP Delivers RFC2833 ---> CUBE Delivers OOB
> ---> CUCM Devlier OOB ---> UCCX CTI Port Receives OOB
>
> Is that not the case?
>
> On Mon, Mar 30, 2015 at 12:01 PM Brian Meade <bmeade90 at vt.edu> wrote:
>
>> What are you trying to accomplish with the MTP that can't already be
>> accomplished with media flow-through and dtmf-relay?
>>
>> On Mon, Mar 30, 2015 at 12:38 PM, Anthony Holloway <
>> avholloway+cisco-voip at gmail.com> wrote:
>>
>>> All,
>>>
>>> I know the name itself, LTI, includes the word transcoding, but I'm just
>>> double checking that this will or will not work for registering an MTP on
>>> the CUBE.  All roads are leading me to the answer, but it just seems like a
>>> huge miss on Cisco's part to not allow us to register MTPs as well as XCODE
>>> via the LTI method.
>>>
>>> This works for me:
>>> dspfarm profile 1 transcode
>>>  codec g711ulaw
>>>  codec g729ar8
>>>  max sessions 1
>>>  assoc app cube
>>>  no shut
>>> !
>>>
>>> This does not work for me (it hangs on associating to cube app):
>>> dapfarm profile 2 mtp
>>>  codec g711ulaw
>>>  max sessions software 1
>>>  assoc app cube
>>>  no shut
>>> !
>>>
>>> I have the required dspfarm and mode border-element commands, and
>>> rebooted after as well.
>>>
>>> Seems like with the standard requirement of rfc2833 on SIP trunks to the
>>> ITPS, and CTI apps in the network (I'm looking at you UCCX), MTPs play a
>>> large role in the success of SIP trunking for customers, and yet I cannot
>>> even register them locally with the LTI.
>>>
>>> I do have a fallback plan, so I'm not stuck.  I'm just looking for the
>>> optimal design scenario.  In my order of preference I would like to go:
>>>
>>> 1. LTI
>>> 2. SCCP via Telephony Service
>>> 3. SCCP via CUCM
>>>
>>> Would you rank them differently?
>>>
>>> Thanks for your input in advance.
>>>
>>> _______________________________________________
>>> cisco-voip mailing list
>>> cisco-voip at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>>
>>>
>>
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