I have been using a wonderful ITSP service out of Melbourne called Engin, but i have a heads up regarding configuration of a SIP trunk, to save you the pain that i have gone through.
I have been playing on and off with the generic profile under CCA1.8 and now CCA1.9.
I have trying to get a SIP trunk working between Engin and my UC520, but the voip calls would drop after 24 seconds.
Looking at the voip debug messagesc indicated that my UC520 was the cause of VOIP problem.
However, because Engin are a bring your own device (BYOD ) provider, they offer no configuration assistance. I understand that and that's fair enough.
Tonight i tried to get Engin working again on my UC520.
I had a chat with a cisco employee in Queensland and was given a helpful hint.
She told me to go into CLI mode via hyperterminal or telnet and jumped into 'enable' mode. I logged in and typed 'the following commands;
When i looked at the running config i saw a new entry under the sip-ua section, i saw "connection reuse".
When i tried to type connection reuse under the sip-ua interface, i received the following error message.
% Invalid input detected at '^' marker.
The moral of this story or heads-up message is only type con and not connection reuse if you are trying to get Engin up and running.
This is not a negative on Engin, their service has actually been great, this is a negative on my CLI skills.