Hi Leonid,
Thanks for your quick reply on this. I realised that in the case of the specific UAS that I’m attempting to integrate with, I do not require the sending of the REGISTER message. I’ve removed this functionality to just leave the code that sets gc_SetAuthenticationInfo.
After some testing, I can confirm that when I place an outbound call, the UAS sends back a 401, which the HMP functionality now confirms back with a 2nd INVITE with the authentication details populated. The call is answered and connects so I think I’m now heading in the right direction with the outbound functionality and I can now progress with my investigation.
Many thanks for the advice and confirmation.
Regards,
Michael