Hi, 

I'm trying to send faxes using Asterisk 1.4 and T38 with sip but Asterisk 
rejects the t38.

Anybody know if is possible to transmit t38 fax with Asterisk 1.4?

following settings:

--- sip.conf ---

[general]
bindport=5060
bindaddr=0.0.0.0
disallow=all
allow=ulaw
allow=alaw
context=from-outside
t38pt_udptl=yes


[operator]
qualify=no
nat=yes
host=189.160.126.201
dtmfmode=rfc2833
context=from-outside
type=friend
canreinvite=yes
t38pt_udptl=yes
;t38pt_rtp=no
;t38pt_tcp=no
disallow=all
allow=ulaw
allow=alaw



--- channels/chan_sip.c ---

static int global_t38_capability = T38FAX_VERSION_0 | T38FAX_RATE_2400 | 
T38FAX_RATE_4800 | T38FAX_RATE_7200 | T38FAX_RATE_9600;


--- logs ---


logs

[Nov 13 10:21:11] VERBOSE[25087] logger.c:
<--- SIP read from 189.160.126.210:5060 --->
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 189.6.70.47:5060;branch=z9hG4bK6de18e85;rport=5060
Call-ID: [email protected]
From: "Teste"<sip:[email protected]>;tag=as41b028c6
To: <sip:[email protected]>;tag=66359f37
CSeq: 102 INVITE
Allow: 
INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,PRACK,SUBSCRIBE,NOTIFY,UPDATE,MESSAGE,REFER
Contact: <sip:[email protected]:5060;user=phone>
Content-Length: 237
Content-Type: application/sdp

v=0
o=HuaweiSoftX3000 31955175 31955175 IN IP4 189.160.126.210
s=Sip Call
c=IN IP4 189.160.126.210
t=0 0
m=audio 13474 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

<------------->
[Nov 13 10:21:11] VERBOSE[25087] logger.c: --- (10 headers 10 lines) ---
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found RTP audio format 0
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found RTP audio format 8
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found RTP audio format 101
[Nov 13 10:21:11] DEBUG[25087] chan_sip.c: Peer doesn't provide T.38 UDPTL
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Peer audio RTP is at port 
189.160.126.210:13474
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found audio description format PCMU 
for ID 0
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found audio description format PCMA 
for ID 8
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Found audio description format 
telephone-event for ID 101
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Capabilities: us - 0xc (ulaw|alaw), 
peer - audio=0xc (ulaw|alaw)/video=0x0 (nothing), combined - 0xc (ulaw|alaw)
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Non-codec capabilities (dtmf): us - 
0x1 (telephone-event), peer - 0x1 (telephone-event), combined - 0x1 
(telephone-event)
[Nov 13 10:21:11] VERBOSE[25087] logger.c: Peer audio RTP is at port 
189.160.126.210:13474
[Nov 13 10:21:11] VERBOSE[13464] logger.c:     -- SIP/ctbc-08345a10 is making 
progress passing it to IAX2/nmg010-to-nmg005-trunk1-2748


<--- SIP read from 189.160.126.210:5060 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 189.6.70.47:5060;branch=z9hG4bK6de18e85;rport=5060
Call-ID: [email protected]
From: "Teste"<sip:[email protected]>;tag=as41b028c6
To: <sip:[email protected]>;tag=66359f37
CSeq: 102 INVITE
Contact: <sip:[email protected]:5060;user=phone>
Content-Length: 237
Content-Type: application/sdp

v=0
o=HuaweiSoftX3000 31955175 31955176 IN IP4 189.160.126.210
s=Sip Call
c=IN IP4 189.160.126.210
t=0 0
m=audio 13474 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

<------------->
[Nov 13 10:21:15] VERBOSE[25087] logger.c: --- (9 headers 10 lines) ---
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found RTP audio format 0
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found RTP audio format 8
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found RTP audio format 101
[Nov 13 10:21:15] DEBUG[25087] chan_sip.c: Peer doesn't provide T.38 UDPTL
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Peer audio RTP is at port 
189.160.126.210:13474
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found audio description format PCMU 
for ID 0
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found audio description format PCMA 
for ID 8
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Found audio description format 
telephone-event for ID 101
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Capabilities: us - 0xc (ulaw|alaw), 
peer - audio=0xc (ulaw|alaw)/video=0x0 (nothing), combined - 0xc (ulaw|alaw)
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Non-codec capabilities (dtmf): us - 
0x1 (telephone-event), peer - 0x1 (telephone-event), combined - 0x1 
(telephone-event)
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Peer audio RTP is at port 
189.160.126.210:13474
[Nov 13 10:21:15] VERBOSE[25087] logger.c: list_route: hop: 
<sip:[email protected]:5060;user=phone>
[Nov 13 10:21:15] DEBUG[25087] chan_sip.c: Strict routing enforced for session 
[email protected]
[Nov 13 10:21:15] VERBOSE[25087] logger.c: set_destination: Parsing 
<sip:[email protected]:5060;user=phone> for address/port to send to
[Nov 13 10:21:15] VERBOSE[25087] logger.c: set_destination: set destination to 
189.160.126.210, port 5060
[Nov 13 10:21:15] VERBOSE[25087] logger.c: Transmitting (NAT) to 
189.160.126.210:5060:


ACK sip:[email protected]:5060;user=phone SIP/2.0
Via: SIP/2.0/UDP 189.6.70.47:5060;branch=z9hG4bK6618dc53;rport
From: "Teste" <sip:[email protected]>;tag=as41b028c6
To: <sip:[email protected]>;tag=66359f37
Contact: <sip:[email protected]>
Call-ID: [email protected]
CSeq: 102 ACK
User-Agent: Asterisk PBX
Max-Forwards: 70
Content-Length: 0


---
[Nov 13 10:21:15] VERBOSE[13464] logger.c:     -- SIP/ctbc-08345a10 answered 
IAX2/nmg010-to-nmg005-trunk1-2748


<--- SIP read from 189.160.126.210:5060 --->
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 189.160.126.210:5060;branch=z9hG4bKb9f6b05aa5fb314af51ece37c
Call-ID: [email protected]
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
CSeq: 1 INVITE
Max-Forwards: 70
Contact: <sip:189.160.126.210:5060>
Content-Length: 295
Content-Type: application/sdp

v=0
o=HuaweiSoftX3000 31955175 31955177 IN IP4 189.160.126.210
s=Sip Call
c=IN IP4 189.160.126.210
t=0 0
m=image 13474 udptl t38
a=T38FaxVersion:0
a=T38MaxBitRate:9600
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxBuffer:176
a=T38FaxMaxDatagram:176
a=T38FaxUdpEC:t38UDPRedundancy

<------------->
[Nov 13 10:21:18] VERBOSE[25087] logger.c: --- (10 headers 12 lines) ---
[Nov 13 10:21:18] VERBOSE[25087] logger.c: Sending to 189.160.126.210 : 5060 
(NAT)
[Nov 13 10:21:18] VERBOSE[25087] logger.c: Got T.38 offer in SDP in dialog 
[email protected]
[Nov 13 10:21:18] DEBUG[25087] chan_sip.c: Peer T.38 UDPTL is at port 
189.160.126.210:13474
[Nov 13 10:21:18] VERBOSE[25087] logger.c: Got T.38 Re-invite without audio. 
Keeping RTP active during T.38 session. Callid 
[email protected]
[Nov 13 10:21:18] DEBUG[25087] chan_sip.c: Our T38 capability = (16208), peer 
T38 capability (3872), joint T38 capability (3872)

[Nov 13 10:21:18] VERBOSE[25087] logger.c: Capabilities: us - 0xc (ulaw|alaw), 
peer - audio=0x0 (nothing)/video=0x0 (nothing), combined - 0x0 (nothing)
[Nov 13 10:21:18] VERBOSE[25087] logger.c: Non-codec capabilities (dtmf): us - 
0x1 (telephone-event), peer - 0x0 (nothing), combined - 0x0 (nothing)
[Nov 13 10:21:18] VERBOSE[25087] logger.c:
<--- Transmitting (NAT) to 189.160.126.210:5060 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 
189.160.126.210:5060;branch=z9hG4bKb9f6b05aa5fb314af51ece37c;received=189.160.126.210
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
Call-ID: [email protected]
CSeq: 1 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Contact: <sip:[email protected]>
Content-Length: 0


<------------>
[Nov 13 10:21:18] VERBOSE[25087] logger.c:
<--- Reliably Transmitting (NAT) to 189.160.126.210:5060 --->
SIP/2.0 488 Not acceptable here
Via: SIP/2.0/UDP 
189.160.126.210:5060;branch=z9hG4bKb9f6b05aa5fb314af51ece37c;received=189.160.126.210
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
Call-ID: [email protected]
CSeq: 1 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Content-Length: 0
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16


<------------>
[Nov 13 10:21:18] VERBOSE[25087] logger.c:
<--- SIP read from 189.160.126.210:5060 --->
ACK sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 189.160.126.210:5060;branch=z9hG4bKb9f6b05aa5fb314af51ece37c
Call-ID: [email protected]
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

<------------->
[Nov 13 10:21:18] VERBOSE[25087] logger.c: --- (8 headers 0 lines) ---
[Nov 13 10:21:18] VERBOSE[25087] logger.c:
<--- SIP read from 189.160.126.210:5060 --->
BYE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 189.160.126.210:5060;branch=z9hG4bK4cd5c1fb8ed03c364cf46fbbf
Call-ID: [email protected]
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
CSeq: 2 BYE
Max-Forwards: 70
Content-Length: 0


<------------->
[Nov 13 10:21:18] VERBOSE[25087] logger.c: --- (8 headers 0 lines) ---
[Nov 13 10:21:18] VERBOSE[25087] logger.c: Sending to 189.160.126.210 : 5060 
(NAT)
[Nov 13 10:21:18] VERBOSE[25087] logger.c:
<--- Transmitting (NAT) to 189.160.126.210:5060 --->
SIP/2.0 200 OK
Via: SIP/2.0/UDP 
189.160.126.210:5060;branch=z9hG4bK4cd5c1fb8ed03c364cf46fbbf;received=189.160.126.210
From: <sip:[email protected]>;tag=66359f37
To: "Teste"<sip:[email protected]>;tag=as41b028c6
Call-ID: [email protected]
CSeq: 2 BYE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Content-Length: 0



thank in advance.

--
Marcus


      
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