I am testing Fax for Asterisk. But, I meet a problem. I try to Send a Fax
(.tiff) from the first
asterisk (Asterisk1) to the second asterisk (Asterisk2). Asterisk1 initiates an
INVITE with audio G.711. Asterisk2
accepts this INVITE. Immediately, Asterisk2 sends an re-INVITE with T.38 to
Asterisk1. But, Asterisk1 responds with
"488 not acceptable here". I double check t38pt_udptl = yes in my sip.conf. Why
not Asterisk1 can not accept the Re-INVITE
with T.38 SDP? What do I miss?
////////////////////////////////////////////////////////////////////
dev10*CLI> fax show version
Fax For Asterisk Components:
dev10*CLApplications: 1.6.1_1.0.11
dev10*CLDigium Fax T.38 Driver: 1.6.1_1.0.9 (optimized for i686_32)
dev10*CLDigium Fax G.711 Driver: 1.6.1_1.0.9 (optimized for i686_32)
----------------------------------------------------------
.call file
Channel: SIP/1...@outbound-calls
MaxRetries: 3
WaitTime: 30
Set: LOCALSTATIONID=22222
Set: LOCALHEADERINFO=T38 fax
Set: T38CALL=1
Set: T38TXDETECT=yes
CallerID: 123456
Context: fax-tx
Extension: send
priority:1
-----------------------------------------------------------
sip.conf
[general]
context=default
allowoverlap=no
udpbindaddr=0.0.0.0
tcpenable=no
tcpbindaddr=0.0.0.0
srvlookup=yes
disallow=all
allow=ulaw
t38pt_udptl = yes
------------------------------------------------------------
extensions.conf
[fax-rx]
exten => receive,1,NoOp(**** FAX RECEIVE ****)
exten => receive,n,Set(GLOBAL(FAXCOUNT)=${GLOBAL(FAXCOUNT)}+1)
exten => receive,n,Set(FAXCOUNT=${GLOBAL(FAXCOUNT)})
exten => receive,n,Set(FAXFILE=fax-${FAXCOUNT}-rx.tif)
exten => receive,n,Set(GLOBAL(LASTFAXCALLERNUM)=${CALLERID(num)})
exten => receive,n,Set(GLOBAL(LASTFAXCALLERNAME)=${CALLERID(name)})
exten => receive,n,NoOp(**** SETTING FAXOPT ****)
exten => receive,n,Set(FAXOPT(ecm)=yes)
exten => receive,n,Set(FAXOPT(headerinfo)=MY FAXBACK RX)
exten => receive,n,Set(FAXOPT(localstationid)=1234567890)
exten => receive,n,Set(FAXOPT(maxrate)=14400)
exten => receive,n,Set(FAXOPT(minrate)=2400)
exten => receive,n,NoOp(FAXOPT(ecm) : ${FAXOPT(ecm)})
exten => receive,n,NoOp(FAXOPT(headerinfo) : ${FAXOPT(headerinfo)})
exten => receive,n,NoOp(FAXOPT(localstationid) : ${FAXOPT(localstationid)})
exten => receive,n,NoOp(FAXOPT(maxrate) : ${FAXOPT(maxrate)})
exten => receive,n,NoOp(FAXOPT(minrate) : ${FAXOPT(minrate)})
exten => receive,n,NoOp(**** RECEIVING FAX : ${FAXFILE} ****)
exten => receive,n,ReceiveFAX(/home/sip/fax/${FAXFILE})
[fax-tx]
exten => send,1,NoOp(**** SENDING FAX ****)
exten => send,n,Wait(6)
exten => send,n,Set(GLOBAL(FAXCOUNT)=1)
;exten => send,n,Set(GLOBAL(FAXCOUNT)= ${GLOBAL(FAXCOUNT)}+1)
exten => send.,n,Set(FAXCOUNT=${GLOBAL(FAXCOUNT)})
exten => send,n,Set(FAXFILE=test.tif)
; Set FAXOPTs
exten => send,n,NoOp(**** SETTING FAXOPT ****)
exten => send,n,Set(FAXOPT(ecm)=yes)
exten => send,n,Set(FAXOPT(headerinfo)=Fax from ${GLOBAL(LASTFAXCALLERNAME)} at
${GLOBAL(LASTFAXCALLERNUM)} was received.)
exten => send,n,Set(FAXOPT(localstationid)=1234567890)
exten => send,n,Set(FAXOPT(maxrate)=14400)
exten => send,n,Set(FAXOPT(minrate)=2400)
; Send the fax
exten => send,n,NoOp(**** SENDING FAX : ${FAXFILE} ****)
exten => send,n,SendFAX(/home/sip/fax/${FAXFILE},d)
[default]
exten => _X.,1,NoOp(**** FAX DETECTED ****)
exten => _X.,n,Goto(fax-rx,receive,1)
----------------------------------------------------------
The SIP trace is
#
U 2009/07/15 22:30:11.588436 74.13.233.143:5060 -> 209.167.0.151:5060
INVITE sip:[email protected] SIP/2.0..Via: SIP/2.0/UDP
74.13.233.143:5060;branch=z9hG4bK092e48ce;rport..Max-Forwards: 70..From
: "123456" <sip:[email protected]>;tag=as74992a24..To:
<sip:[email protected]>..Contact: <sip:[email protected]>..Call-I
D: [email protected]: 102
INVITE..User-Agent: Asterisk PBX 1.6.1.1..Date: Wed, 15 Jul 2009 2
2:30:11 GMT..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY..Supported: replaces, timer..Content-Type: appl
ication/sdp..Content-Length: 265....v=0..o=root 1425900082 1425900082 IN IP4
74.13.233.143..s=Asterisk PBX 1.6.1.1..c=IN IP4 74
.13.233.143..t=0 0..m=audio 18452 RTP/AVP 0 101..a=rtpmap:0
PCMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-16..a=si
lenceSupp:off - - - -..a=ptime:20..a=sendrecv..
#
U 2009/07/15 22:30:11.723006 209.167.0.151:5060 -> 74.13.233.143:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP
74.13.233.143:5060;branch=z9hG4bK092e48ce;received=74.13.233.143;rport=5060..From:
"123456
" <sip:[email protected]>;tag=as74992a24..To:
<sip:[email protected]>..Call-ID: [email protected].
143..CSeq: 102 INVITE..Server: Asterisk PBX 1.6.1.1..Allow: INVITE, ACK,
CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Suppor
ted: replaces, timer..Contact: <sip:[email protected]>..Content-Length:
0....
#
U 2009/07/15 22:30:11.730205 209.167.0.151:5060 -> 74.13.233.143:5060
SIP/2.0 200 OK..Via: SIP/2.0/UDP
74.13.233.143:5060;branch=z9hG4bK092e48ce;received=74.13.233.143;rport=5060..From:
"123456" <s
ip:[email protected]>;tag=as74992a24..To:
<sip:[email protected]>;tag=as3114c7a3..Call-ID:
422fd4375fe79a5977e891870f5cc05b
@74.13.233.143..CSeq: 102 INVITE..Server: Asterisk PBX 1.6.1.1..Allow:
INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOT
IFY..Supported: replaces, timer..Contact:
<sip:[email protected]>..Content-Type: application/sdp..Content-Length:
265....v=0..
o=root 2128364626 2128364626 IN IP4 209.167.0.151..s=Asterisk PBX
1.6.1.1..c=IN IP4 209.167.0.151..t=0 0..m=audio 13848 RTP/AVP
0 101..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101
0-16..a=silenceSupp:off - - - -..a=ptime:20..a=send
recv..
#
U 2009/07/15 22:30:11.730460 74.13.233.143:5060 -> 209.167.0.151:5060
ACK sip:[email protected] SIP/2.0..Via: SIP/2.0/UDP
74.13.233.143:5060;branch=z9hG4bK271a4788;rport..Max-Forwards: 70..From: "
123456" <sip:[email protected]>;tag=as74992a24..To:
<sip:[email protected]>;tag=as3114c7a3..Contact: <sip:[email protected].
143>..Call-ID: [email protected]: 102
ACK..User-Agent: Asterisk PBX 1.6.1.1..Content-Length:
0....
#
U 2009/07/15 22:30:12.140990 209.167.0.151:5060 -> 74.13.233.143:5060
INVITE sip:[email protected] SIP/2.0..Via: SIP/2.0/UDP
209.167.0.151:5060;branch=z9hG4bK00000000;rport..Max-Forwards: 70..Fr
om: <sip:[email protected]>;tag=as3114c7a3..To: "123456"
<sip:[email protected]>;tag=as74992a24..Contact: <sip:[email protected]
.0.151>..Call-ID: [email protected]: 102
INVITE..User-Agent: Asterisk PBX 1.6.1.1..Allow: IN
VITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY..Supported:
replaces, timer..Content-Type: application/sdp..Content-L
ength: 288....v=0..o=root 2128364626 2128364627 IN IP4
209.167.0.151..s=Asterisk PBX 1.6.1.1..c=IN IP4 209.167.0.151..t=0 0..m=
image 4240 udptl
t38..a=T38FaxVersion:0..a=T38MaxBitRate:9600..a=T38FaxRateManagement:transferredTCF..a=T38FaxMaxBuffer:400..a=
T38FaxMaxDatagram:400..a=T38FaxUdpEC:t38UDPFEC..
#
U 2009/07/15 22:30:12.141353 74.13.233.143:5060 -> 209.167.0.151:5060
SIP/2.0 100 Trying..Via: SIP/2.0/UDP
209.167.0.151:5060;branch=z9hG4bK00000000;received=209.167.0.151;rport=5060..From:
<sip:19
[email protected]>;tag=as3114c7a3..To: "123456"
<sip:[email protected]>;tag=as74992a24..Call-ID: 422fd4375fe79a5977e891870f5c
[email protected]: 102 INVITE..Server: Asterisk PBX 1.6.1.1..Allow:
INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY..Supported: replaces, timer..Contact:
<sip:[email protected]>..Content-Length: 0....
#
U 2009/07/15 22:30:17.140683 74.13.233.143:5060 -> 209.167.0.151:5060
SIP/2.0 488 Not acceptable here..Via: SIP/2.0/UDP
209.167.0.151:5060;branch=z9hG4bK00000000;received=209.167.0.151;rport=5060..
From: <sip:[email protected]>;tag=as3114c7a3..To: "123456"
<sip:[email protected]>;tag=as74992a24..Call-ID: 422fd4375fe79a5
[email protected]: 102 INVITE..Server: Asterisk PBX
1.6.1.1..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFE
R, SUBSCRIBE, NOTIFY..Supported: replaces, timer..Content-Length:
0..X-Asterisk-HangupCause: Normal Clearing..X-Asterisk-Hangup
CauseCode: 16....
#
U 2009/07/15 22:30:17.186266 209.167.0.151:5060 -> 74.13.233.143:5060
ACK sip:[email protected] SIP/2.0..Via: SIP/2.0/UDP
209.167.0.151:5060;branch=z9hG4bK00000000;rport..Max-Forwards: 70..From:
<sip:[email protected]>;tag=as3114c7a3..To: "123456"
<sip:[email protected]>;tag=as74992a24..Contact: <sip:[email protected].
151>..Call-ID: [email protected]: 102
ACK..User-Agent: Asterisk PBX 1.6.1.1..Content-Length:
0....
#
------------------------------------------------------------
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