Hello Asterisk community.
I have a problem with my Asterisk 1.8.10 rc2.
My provider have a Huawei softswitch.
When i make a call,it funktions but If i want to FAX through G.711 the Asterisk has a Problem with the Huawei Softswitch.
I send the Invite to Huawei with codec G.711 and Port 11100.
Huawei accepts the invite, the FAX rings on the other side.
The Fax on the otherside takes the call and i get a re-invite form the Huawei with the Option t.38 - Port 11100,g711a - Port 11102,g711u - Port 11104.
On my Asterisk i have disable t.38, so the asterisk get the G.711 codec with the new Port 11102.
The Huawei does not switch to the new G.711 Port (Port 11102), an stay on the old Port 11100, because huawei send a media attribute a=X-FAX with the re-invite.
Asterisk accepts the re-invite, but does not send the madia attribute a=X-FAX, so the huawei ingnores the accepted reinvite and stays on the old Port 11100. But my Asterisk switches to port 11102.
How I can resolv this Problem?
Can i ingnore the re-invite from the Huawei?