T38Gateway works like Dial.

A T.38 enabled ATA dials extension 100:

exten => 100,1,T38Gateway(Zap/g1/NUMBER...etc..)

T38Gateway is afaik used for terminating T.38 to the PSTN, and I am
quite certain it can be used the other way around as well. I.e. call
from PSTN to T.38 ata.


man, 05,.02.2007 kl. 04.56 -0500, skrev Andrew Joakimsen:
> So is T38Gateway designed to bridge two T.38 channels? What if one
> wants to "originate" T38? I don't wish to depend on someone to do the
> translation for me, the goal would be to replace Asterisk with OpenPBX
> as PRI gateway.
> 
> Here is the full log, ATA sends T38 INVITE, OpenPBX sends 488 not acceptable
> 
> 
> --- (9 headers 0 lines) ---
> web04*CLI>
> <-- SIP read from 64.238.173.171:5060:
> INVITE sip:[EMAIL PROTECTED] SIP/2.0
> From: "Line 1"<sip:[EMAIL 
> PROTECTED]>;tag=100c4488-24fba8c0-13c4-45c6fe22-56a9a201-45c6fe22
> To: "13525054734"<sip:[EMAIL PROTECTED]:5060>;tag=as61f1af6e
> Call-ID: [EMAIL PROTECTED]
> CSeq: 5 INVITE
> Via: SIP/2.0/UDP
> 64.238.173.171:5060;rport;branch=z9hG4bK-45c6fe42-91513385-6cd8a7a2
> Max-Forwards: 70
> Supported: replaces
> Contact: <sip:[EMAIL PROTECTED]:5060;transport=UDP>
> Proxy-Authorization: Digest
> username="00908F03206D-L1",realm="openpbx.org",nonce="11bdc0c7",uri="sip:[EMAIL
>  PROTECTED]",response="1e9936db2ba6661c5e610515b316c370",algorithm=MD5
> Content-Type: application/sdp
> Content-Length: 269
> 
> v=0
> o=rtp 1170669145 1170669148 IN IP4 192.168.251.36
> s=-
> c=IN IP4 5004
> t=0 0
> m=image 5004 UDPTL t38
> a=T38FaxVersion:0
> a=T38MaxBitRate:14400
> a=T38FaxMaxBuffer:1024
> a=T38FaxMaxDatagram:122
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxUdpEC:t38UDPRedundancy
> 
> --- (12 headers 12 lines) ---
> Using INVITE request as basis request -
> [EMAIL PROTECTED]
> Sending to 64.238.173.171 : 5060 (NAT)
> Feb  5 04:57:46 WARNING[1092139328]: chan_sip.c:4691 process_sdp:
> Unable to lookup host in c= line, 'IN IP4 5004'
> Transmitting (NAT) to 64.238.173.171:5060:
> SIP/2.0 488 Not acceptable here
> Via: SIP/2.0/UDP
> 64.238.173.171:5060;branch=z9hG4bK-45c6fe42-91513385-6cd8a7a2;received=64.238.173.171;rport=5060
> From: "Line 1"<sip:[EMAIL 
> PROTECTED]>;tag=100c4488-24fba8c0-13c4-45c6fe22-56a9a201-45c6fe22
> To: "13525054734"<sip:[EMAIL PROTECTED]:5060>;tag=as61f1af6e
> Call-ID: [EMAIL PROTECTED]
> CSeq: 5 INVITE
> User-Agent: OpenPBX
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
> Max-Forwards: 70
> Content-Length: 0
> 
> 
> On 2/5/07, Mikael Bjerkeland <[EMAIL PROTECTED]> wrote:
> > man, 05,.02.2007 kl. 04.34 -0500, skrev Andrew Joakimsen:
> > > > I tried T38Gateway in following modes:
> > > >
> > > > PRI -> Cisco AS5350 -> SIP -> OpenPBX -> SpanDSP
> > > > ATA -> SIP -> OpenPBX -> SpanDSP
> > >
> > > Are you actually using the T38Gateway application? The AS5350 should
> > > support T.38 itself (and there's no reason not to use it) and the 2nd
> > > setup I assume you are using TxFax/RxFax?
> > >
> > >
> > > > I'm going to setup ZAP hardware at openpbx.org box and test this
> > > > issue.
> > > >
> > > I don't think it should be any different than sending the fax as ulaw
> > > over the LAN which is what I am trying to do.
> > >
> > > When I dial from the IAX to the SIP ATA via T38Gateway I get:
> > >
> > >  WARNING[1094269248] app_t38gateway.c: Bridging frames
> > >
> > > When I dial from the SIP ATA to the IAX via T38Gateway I get:
> > >
> > > ERROR[1094003008] app_t38gateway.c: failed to get remote_channel
> > > IAX2/isphone-out/13525054732
> >
> > This is possibly because T38Gateway only works with SIP.
> >
> > You should not use T38Gateway with IAX. OpenPBX.org does not support
> > T.38 with anything else than IAX. Connect your OpenPBX.org servers with
> > SIP and give it a new shot.
> >
> > > _______________________________________________
> > > Openpbx-users mailing list
> > > [email protected]
> > > http://lists.openpbx.org/mailman/listinfo/openpbx-users
> >
> > _______________________________________________
> > Openpbx-users mailing list
> > [email protected]
> > http://lists.openpbx.org/mailman/listinfo/openpbx-users
> >
> _______________________________________________
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