SIP2SIP

I have the same problem with 43 and +389. When I use 011 instead of 00 (the US-prefix for '') I get code 408, 603 or a lady telling me, that my international call can not be completed.

…at least I can call the United States Naval Observatory speaking clock in Washington, D.C. at +1 202 762 1401. At least.

I tried numbers from +43 (Austria) and +386 (Slovenia) and got only code 488 (Not Acceptable Here).

Hi Alex,

Only your calls have failed like this. This is 'good news' in the sense that overall traffic works to many destinations and we always get back a code from the PSTN gateway when thing fail, with the other services we tried often we got no reply back some times which made it impossible to troubleshoot.

For this particular calls we will ask the provider for assistance to see what the reason may be, we have the sip traces.

The new carrier supports only G.711u and G.729. I activated these codecs in my phone and it seems to work now.

Ok, there are still some issues:

When calling to Slovenia the code "486 Busy Here" is returned. I tried to call mobile phones of 2 differend providers.

When calling to Austria, there are sometimes caller ID issues: A phone I called displayed the prefix +01143720/… instead of +43720/…, thus the North American international prefix AND the plus got added somehow. Maybe thats also a reason, why some calls don't work, as the called network does not accept the incorrect prefix +01143720/…

In genaral the "500 Server Internal Error" is returned in some cases, but when calling again it works.