[cisco-voip] Outbound Video Calls to Webex fail with 481

[Anthony Holloway]

Wait, explain that to me.  So, your original call setup was over port 5060,
where you received the 481, but then mid-call something tried to switch to
port 5061?  Is that how escalation to encrypted SIP happens?  Starts on
5060 as clear text, then switches over to 5061 for encryption?  I'm
obviously showing my ignorance with this, but willing to learn in spite of
it.

On Thu, Aug 24, 2017 at 1:19 PM Jonathan Charles <jonvoip at gmail.com> wrote:

> Just an FYI, I did get this fixed... the firewall guy told me all rules
> were implemented... and nothing was being blocked.
>
> Turned out he did a permit for sip on the ACL, which did not include
> 5061...
>
> Added 5061 and it works.
>
>
>
> Thanks!
>
>
> Jonathan
>
> On Sun, Aug 20, 2017 at 7:53 PM, Jonathan Charles <jonvoip at gmail.com>
> wrote:
>
>> Ok, let me poke around a bit... I assume every problem is because of the
>> firewall...
>>
>>
>> Jonathan
>>
>> On Sun, Aug 20, 2017 at 7:36 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>>
>>> To expand on this; it really sounds like where your trouble happens is
>>> during a re-invite event. If that is the case, it could very well be DNS as
>>> mentioned OR less likely (but plausible), a TCP timeout mismatch on a
>>> firewall.
>>>
>>> The codec logs and CCM trace will tell the tale for sure though.
>>>
>>> Thanks,
>>>
>>> Ryan
>>>
>>> On Aug 20, 2017, at 6:36 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>>>
>>> This might have to do with DNS. I would review all your
>>> internal/external SRV/A records for EXP/CUCM and your DNS zone in EXP.
>>>
>>> It sounds like the call is traversing expressway, but call manager may
>>> be having trouble finding the call leg via DNS, to connect the codec to.
>>>
>>> Pulling CCM traces and debug logs on the codec for a failed call will
>>> tell you for sure.
>>>
>>> Thanks,
>>>
>>> Ryan
>>>
>>> On Aug 20, 2017, at 6:30 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
>>>
>>> Just a single VCSC and VCSE.... single CUCM 11.5... this is just a proof
>>> of concept...
>>>
>>>
>>>
>>> Jonathan
>>>
>>> On Sun, Aug 20, 2017 at 5:27 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>>>
>>>> Do you have EXP clusters or is this a single C/E pair?
>>>>
>>>> Sent from my iPhone
>>>>
>>>> > On Aug 20, 2017, at 6:26 PM, Jonathan Charles <jonvoip at gmail.com>
>>>> wrote:
>>>> >
>>>> > We have an SX80 connected to CUCM 11.5 and VCSC 8.10  to a VCSE
>>>> 8.10...
>>>> >
>>>> > Outbound calls route to Webex, you see them enter the meeting and
>>>> then after 4 seconds, they drop, the VCS E shows
>>>> >
>>>> > 481 Call/Transaction Does Not Exist
>>>> >
>>>> > Does anyone have any ideas?
>>>> >
>>>> >
>>>> >
>>>> >
>>>> > Jonathan
>>>> >
>>>> >
>>>> > _______________________________________________
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>>>> > https://puck.nether.net/mailman/listinfo/cisco-voip
>>>>
>>>
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>>>
>>
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