[asterisk-users] asterisk t.38 fax failed

[Kokfoo Soo]

Is T.38 fax work through Asterisk? I have the config below in my sip.conf, but the fax doesn't work and give me the CLI lines below. My current version is 1.2.10. Please help.

[Inboundtopbx]
type=friend
context=pbx
host=10.18.188.84
insecure=port
dtmfmode=rfc2833
canreinvite=no
disallow=all
allow=g729
allow=ulaw
t38pt_udptl=yes
t38pt_rtp=no
t38pt_tcp=no

[OutboundfromPBX]
type=peer
host=10.18.161.222               
canreinvite=no
dtmfmode=rfc2833
disallow=all
allow=g729
qualify=yes
t38pt_udptl=yes
t38pt_rtp=no
t38pt_tcp=no

<-- SIP read from 10.18.188.84:50096: 
ACK sip:17815057304 at 10.18.161.237:5060 SIP/2.0
Via: SIP/2.0/UDP  10.18.188.84:5060
From: <sip:7350 at 10.18.188.84>;tag=19D429E8-2084
To: <sip:17815057304 at 10.18.161.237>;tag=as3c87a22e
Date: Tue, 05 Sep 2006 19:42:28 GMT
Call-ID: 7F23A1F9-3C4D11DB-A303B82B-9F58A83F at 10.18.188.84
Max-Forwards: 6
Content-Length: 0
CSeq: 101 ACK


--- (9 headers 0 lines)---
Sep  5 15:30:31 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP codec 100 received
Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP codec 100 received
Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP codec 100 received
Sep  5 15:30:32 NOTICE[25233]: rtp.c:564 ast_rtp_read: Unknown RTP codec 100 received
Sep  5 15:30:34 WARNING[6839]: chan_sip.c:3475 process_sdp: Unknown SDP media type in offer: image 16406 udptl t38

 		
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