Grandstream GXP2140 compatible with CUCM (8.6)?

[shikamarunara]

I am testing out some 3rd party SIP phones and am having some trouble with the Grandstream GXP2140.  I can get the phone to register, I have dial tone, but I can not dial anything with it and nothing can dial to it.  I ran a packet capture of the SIP traffic and CUCM responds with a 503 Service Unavailable when it tries to set up calls (please see screenshot).  Any help is appreciated.

[Vivek Batra]

Can you please attach the wireshark traces (instead of only screenshot)?

Thanks

[shikamarunara]

Vivek - thank you for the reply.  I figured out the problem.

[Vivek Batra]

Hi,

Can you please share what was the issue?

Regards,

Vivek

[ngebara]

Shikamarunara,

Can you post what you did in 8.6? I was looking at buying one these to test.

Did you have to create a new template?

Thanks,

Neil.