[cisco-voip] Unity xfer Getting 603 from carrier

[fred at browardcommunications.com]

Thank you.
Currently that setting under sip is set to:
midcall-signaling preserve-codec

If that gets changed what do you think the impact would be?

This customer has had many hands on their environment and is a bit of a mess, so I feel that if I change one thing, 10 other things will break.


Sent from my iPhone

> On Jul 29, 2020, at 8:18 AM, Ryan Huff <ryanhuff at outlook.com> wrote:
> 
> Try adding “midcall-signaling passthru media-change” under voice service voip -> sip.
> 
> Thanks,
> 
> Ryan 
> 
> Sent from my iPhone
> 
>> On Jul 29, 2020, at 07:45, "fred at browardcommunications.com" <fred at browardcommunications.com> wrote:
>> 
>> 
>> Greetings all, this might be simple fix, I just haven’t dealt with this in a while.
>> 
>> We have a unity AA that, when external callers call, select menu options, etc. Unity will send the call back to. CtiRp, which then CFA to an external number. You hear the Unity transfer message, 1 second of MoH, then 10 seconds of nothing, then the call drops.
>> 
>> Internal calls to the CFA ctirp works
>> 
>> Internal calls to the unity ctirp then back to the CFA ctirp works.
>> 
>> I tried having unity call the pstn number directly with same results
>> 
>> I think the issue is with the calling number is why the carrier is sending the 603, but it is next to impossible to get them to tell us that.
>> 
>> Call flow:
>> Pstn>sipt>cucm >unity>cucm>ctirp-CFA-pstn
>> 
>> Where would I change the calling number being CFA’ed from Unity to the PSTN?
>> 
>> Any ideas?
>> 
>> Thank you.
>> 
>> /FW
>> 
>> Sent from my iPhone
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