Hello list,
I'm having some problems with T38Gateway and I was hoping
someone could give me a hand to resolve them ...
I'm testing callweaver's 1.2.1 T38Gateway on a debian machine
(stable/etch 4.0) with the latest spandsp. The server is connected to the PSTN
thru a Sangoma A104 card/zaptel 1.4.12; the T38 tests are done using a Patton
4114 with the latest firmware (5.4) and a Hylafax server on the other side.
When the Patton is supposed to receive the data from the
Hylafax Server , after a few(3-4 calls) tries the incoming fax arrives
correctly.
Here's what Hylafax generates when the Patton is receiving with
errors:
Sep 23 14:19:27.12: [15008]: MODEM <Empty line>
Sep 23 14:19:27.12: [15008]: MODEM TIMEOUT: waiting for v.21 carrier
Sep 23 14:19:27.12: [15008]: <-- data [1]
Sep 23 14:19:27.13: [15008]: --> [2:OK]
Sep 23 14:19:27.13: [15008]: <-- [9:AT+FRS=7\r]
Sep 23 14:19:27.15: [15008]: --> [2:OK]
Sep 23 14:19:27.15: [15008]: SEND send EOP (no more pages or documents)
Sep 23 14:19:27.15: [15008]: <-- [9:AT+FTH=3\r]
Sep 23 14:19:27.17: [15008]: --> [7:CONNECT]
Sep 23 14:19:27.17: [15008]: <-- HDLC<3:FF C8 F4>
Sep 23 14:19:27.17: [15008]: <-- data [3]
Sep 23 14:19:27.17: [15008]: <-- data [2]
Sep 23 14:19:28.25: [15008]: --> [2:OK]
Sep 23 14:19:28.25: [15008]: <-- [9:AT+FRH=3\r]
Sep 23 14:19:30.17: [15008]: --> [10:NO CARRIER]
Sep 23 14:19:30.17: [15008]: MODEM No carrier
Sep 23 14:19:30.17: [15008]: <-- [9:AT+FRS=7\r]
Sep 23 14:19:30.17: [15008]: --> [5:ERROR]
Sep 23 14:19:30.17: [15008]: MODEM Command error
Sep 23 14:19:30.17: [15008]: Failure to receive silence (synchronization
failure).
Sep 23 14:19:30.17: [15008]: SEND send EOP (no more pages or documents)
The other scenario, when the Patton submits the fax to
callweaver, ends with:
CALLWEAVER:
app_t38gateway.c:676 t38gateway_exec:
T38Gateway exit with ANSWER
HYLAFAX:
Sep 23 11:29:18.56: [ 4045]: MODEM <Empty line>
Sep 23 11:29:18.56: [ 4045]: MODEM TIMEOUT: waiting for v.21 carrier
Sep 23 11:29:18.56: [ 4045]: <-- data [1]
Sep 23 11:29:18.58: [ 4045]: --> [2:OK]
Sep 23 11:29:18.58: [ 4045]: RECV FAX: No sender protocol (T.30 T1 timeout)
Sep 23 11:29:18.58: [ 4045]: RECV FAX: end
Sep 23 11:29:18.58: [ 4045]: No sender protocol (T.30 T1 timeout)
Sep 23 11:29:18.58: [ 4045]: SESSION END
Here are my settings:
udptl.conf:
[general]
T38FaxUdpEC = t38UDPFEC
T38FaxMaxDatagram = 400
UDPTLFECentries = 2
UDPTLFECspan = 3
sip.conf:
t38udptlsupport=yes in general and peer section
extensions.conf:
[fax_gateway_out]
exten => _X.,1,T38Gateway(${TRUNK}/${EXTEN})
exten => _X.,n,Hangup()
[fax_gateway_in]
exten => _X.,1,FaxDetect(4000)
exten => _X.,n,T38Gateway(SIP/0${EXTEN},50)
exten => _X.,n,Hangup()
The only codec allowed is "alaw".
Some interesting lines from debug:
chan_zap.c:4816 zt_write: Don't know what to do with frame type '5'
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:251
t38_tx_packet_handler: t38_tx_packet_handler: Sending 1 copies of frame
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 292: (0) data v21/hdlc-data + 1 byte(s)
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 292: IFP c0 01 80 00 00 18
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:251
t38_tx_packet_handler: t38_tx_packet_handler: Sending 1 copies of frame
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38G HDLC frame type DIS, CRC OK
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38G Monitoring DIS
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 293: (0) data v21/hdlc-fcs-OK + 0 byte(s)
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 293: IFP c0 01 20
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:251
t38_tx_packet_handler: t38_tx_packet_handler: Sending 1 copies of frame
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38G HDLC signal status is Carrier down (-1)
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 294: (0) data v21/hdlc-sig-end + 0 byte(s)
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 294: IFP c0 01 10
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:251
t38_tx_packet_handler: t38_tx_packet_handler: Sending 3 copies of frame
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38 Tx 295: indicator no-signal
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:251
t38_tx_packet_handler: t38_tx_packet_handler: Sending 3 copies of frame
Sep 23 09:29:01 DEBUG[3051768752]: app_t38gateway.c:90
span_message: FLOW T.38G Restart rx modem - modem = 0, short train = 0, ECM = 0
-- Channel 0/31, span 1 got hangup request
Any suggestions/ideas/questions are greatly appreciated.
Thank you,
Alex
_______________________________________________
Callweaver-users mailing list
Callweaver-users@callweaver.org
http://lists.callweaver.org/mailman/listinfo/callweaver-users
