Outgoing Calls didn't work

[rethus]

Incomming calls works realy well, outgoing calls didn't.
If i start the Program on commandline, i got the following messages, whild doing an outgoing call:

sVoIP_phapi_handle_invite_out
sVoIP_phapi_handle_invite_out
(warn) 11:58:50 [PhApi] : osip: /build/buildd/qutecom-2.2+dfsg1/wifo/libosip2/src/osip2/osip_dialog.c:355: Remote UA is not compliant: missing a tag in response!
(warn) 11:58:50 [PhApi] : osip: /build/buildd/qutecom-2.2+dfsg1/wifo/libosip2/src/osip2/osip_dialog.c:401: Remote UA is not compliant: missing a contact in response!
(error) 11:58:50 [PhApi] : osip: /build/buildd/qutecom-2.2+dfsg1/wifo/eXosip/src/eXosip.c:3738: eXosip: No call here?
(process:1165): pidgin-libnotify-plugin-DEBUG: Successfully wrote blacklist file to /home/suther/.config/indicators/messages/applications-blacklist/pidgin-libnotify

While this, the call freeze... so i only can press Button "Cancel".

Kubuntu 10.04
Linux desktop 2.6.38-13-generic #56-Ubuntu SMP Tue Feb 14 12:40:40 UTC 2012 i686 athlon i386 GNU/Linux

[rethus]

Version