[cisco-voip] SX20 and Expressway C/E setup

[Matt Jacobson]

I would review your configs for the cucm - exp-c - exp-e trunks then your
DNS/b2b traversal search rules. You can sanity check these by comparing
them to the config guides for VCS with CUCM then VCS control with
expressway and then the VCS IP port range port range documentation.

VCS and expressway are interchangeable terms/products in the documentation,
although it is confusing sometimes.

I'd suspect either your external video calls are not being routed out
correctly from CUCM registered endpoint or your signaling/media is being
blocked by firewall. Remember the media will route from sx20 through each
expressway cluster then out to external party.

On VCS, the call history and search history tools are helpful, as is
diagnostic logging to capture tcpdumps.


On Thu, Jul 6, 2017 at 01:47 Terry Oakley <Terry.Oakley at rdc.ab.ca> wrote:

> I have successfully licensed and setup a SX20 on our CUCM 10.5 and have
> made calls to and from the SX20 to both internal numbers, external numbers
> and a Jabber video call.   The problem I am having is placing a video call
> to an outside SIP number.   Does anyone have a guide or document that shows
> how the SX20 should be setup, SIP or H323 etc.    When I look at the logs
> in Expressway I can see the Jabber calls to and from the SX20, but if I try
> to use the SX20 to call an off site video there is no record in the logs.
>    I ran the H323 and SIP debug commands and watched the SX20 call stream
> but frankly I am not sure of what I should be looking for in those logs.
>
>
>
> Thanks
>
>
>
> Terry
>
>
>
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