[cisco-voip] E20 Registration to CUCM 7.1.5

[Ruben Trujillo]

Hello,

I'm trying to get a Cisco E20 to register to CUCM 7.1.5 but I'm not having very much success.  I have it configured as a 3rd party SIP device in CM with digest credentials and I've added the same authentication on the E20 itself along with URI and display name.  I've compared these setting against other 3rd party SIP devices that I've successfully registered (Bria) and it matches yet still no successful registration.  I get the error "Call service is unavailable"  with a reason of "Failed to send".  The E20 is running on firmware version 4.1.1.273710.

Thanks,
Ruben
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