Mr.Frik G

I would like to thank you for your reply

Depending on your Suggestions :

1)sending the client's number in international format (00962 6 3xxx xxx) to the SIP provider .

2)The following ports are forwarded
to the ip of the pbx:

TCP 5060,5070, 5080, 1024-4999
UDP 5060,5061, 30000-3012


But The same problem still appear, when i try to make outgoing call on the SIP trunk, The "opposite hangup " Message appears on the Digital phone screen .

Please any suggestions to solve my problem