Displaying 20 results from an estimated 2000 matches similar to: "T38 Fax"
2011 Mar 23
1
spa8000 t38 faxing
Hi
I'm trying to get the spa 8000 used with a fax machine using t38 passthru
i have tried with 1.6.2 and 1.8.3 and is still a no go
the provider i use is 012 in israel wich supports t38 (i use it with ffa)
could anybody give me a clue how to get this working if it should
t38pt is set to yes in sip.conf
Thanks,
Israel
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2009 May 28
1
asterisk 1.4.X, T.38 and NAT
Hi,
I have been trying to get T.38 to work with clients behind NAT for the past week but with no success.
I have an asterisk server on the public internet and several Grandstream (I tried Linksys too) HT502 ATAs behind NAT in different locations.
I tried every possible combination of NAT, canreinvite, t38pt_usertpsource entries, I even tried asterisk 1.4.19, 1.4.24.1, 1.4.25 all with the same
2012 Feb 02
1
T38 faxing - UDPTL creation failed
Hello guys.
When I am trying to send fax through T38 to linksys SPA (properly
configured etc. - I have tried it with other systems), I'm getting error
and fax is not delivered.
I'm getting this errors in asterisk.log:
WARNING[687] udptl.c: No UDPTL ports remaining
ERROR[687] chan_sip.c: UDPTL creation failed
WARNING[687] udptl.c: No UDPTL ports remaining
then, couple lines down:
2013 Jan 15
4
Getting UDPTL (SIP): Transmission error: Resource temporarily unavailable
Hi,
I configured Asterisk 10 for inbound fax, for couple of weeks I didn't see
any issues until today. The setup I configured for inbound fax is quite
simple i.e. Cisco Voice GW sends the fax calls to Asterisk using T.38
protocol and later Asterisk stores/forwards the fax to specific end user.
The configuration I made in sip.conf for enabling T38 is listed below;
t38pt_udptl =
2013 Jun 02
1
Asterisk T.38 Pass-Through doesn't work
What I have is:
* Asterisk 1.8.10.1~dfsg-1ubuntu1,
* SPA112 ATA with analog fax in 1-st FXS port connected,
* SIP trunk with provider supporting T.38.
My network looks like this:
* spa112 (192.168.33.200/24) and Asterisk (192.168.5.253/24) in
neighbouring LANs,
* Asterisk connects to the provider (80.75.130.136) via router
(82.200.7.184). Router has full DNAT to Asterisk server.
What happens?
2010 Mar 24
0
Asterisk 1.6.1.12 with Grandstream HT502 T38 Fax
Hi All,
I'm in the lab with Asterisk 1.6.1.12 and several ATA's testing T38. I hit
a snag with the Grandstream HT502. It only seems to nail up a session at
9600bps. The Grandstream GXW4104 nails up consistently at 14400bps. I'm
using the same equipment in the same configuration, just switching out the
ATA. I have the latest firmware on each unit. Any ideas on what could
cause
2010 May 18
2
Asterisk 1.4.30 & T38
Hello list,
I read on voip-info.org that Asterisk 1.4 support T38 passthrough.
So I guess this means that I can have a Grandstream HT503 with T38
support and an analogue faxmachine on the other side of my Asterisk and
a T38-account with a ITSP on the other side of my Asterisk machine, right ?!
The fax coming from the faxmachine passes the HT503 to my Asterisk and
my Asterisk sends the fax to
2009 Dec 10
1
Asterisk 1.6.1.11 Fax
Hello,
We're trying to receive faxes on the Asterisk server, but for the time
being T.38 negotiation fails.
The SDP that the Asterisk reINVITE sends contains these lines:
----------------------
m=image 4968 udptl t38
a=T38FaxVersion:0
a=T38MaxBitRate:9600
a=T38FaxFillBitRemoval
a=T38FaxTranscodingMMR
a=T38FaxTranscodingJBIG
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxDatagram:1400
2009 Mar 16
2
t38 iax trunk
Hi all,
I have a question regarding using T38 for fax sending and here is my scenario:
fax -> SIP ATA (T38 enabled) -> Asterisk #1 -> IAX TRUNK -> Asterisk #2 -> SIP ATA (T38 enabled) -> fax
My question is, how can I know if I'm really using T38? is T38 information coming to the other side (because of SIP to IAX conversion) or just plain g711a data?
I'm using Linksys
2009 Jun 26
4
T38 Fax Gateway for Asterisk 1.6
Hi,
I remember seeing a T38 Gateway application for Asterisk 1.6 floating
around, but I can't seem to find it again.
Does anyone have any pointers to it? I really want to be able to send
an incoming T38 connection directly to the PSTN.
Thanks.
-- James
2009 Oct 06
2
T38 REINVITe issue
Hi
My call flow is
T38 static IP gateway --> Asterisk --> Sip Provider--> PSTN
Call is placed in reverse direction - from PSTN to T38 Gateway.
T38 GW reinvites with T38, and asterisk passes it along to the SIP provider. The SIP provider challenges it and asterisk reponds to the Challenge with INVITE with Auth credentials...however, the Asterisk changes the SDP and replaces the T38
2009 Jan 17
3
Asterisk 1.6 T38 to G711 transcoding is this possible?
The scenario we have is fax send/recieve software that ONLY talks T38
and an asterisk box.
We have ITSP providers that do NOT talk T38 but G711 only.
Does asterisk have the capability to take the T38 call from an ATA
or T38 software then bridge/transcode it and do G711 out to the PSTN
providers?
If not is there another product PAID or FREE software or hardware that can
do this easily and
2008 May 05
2
T38 Passthrough Verification
Hi All,
I have 1.4.9.1 setup, with the compiler flags enabled for T38, and
have a Mediatrix 2102 and a Linksys SPA 8000-G1. I can pass faxes
between devices but can't seem to invoke T38 pt UDPTL. It's enabled
in sip.conf [general] and well as the [peer].
I get an error at the CLI:
WARNING[3096]: chan_sip.c:14149 handle_request_invite: RTP re-invite
after T38 session not handled yet !
2010 May 25
2
Little t38 bug?
Hello List,
I think I've discovered a little bug in t.38 bug in 1.6.0.22 regarding the speed (T38MaxBitRate) used to send the faxes.
Asterisk always responds with a=T38MaxBitRate:2400. I've tried with Patton and Grandstream devices and the result is always the same.
Patton ignores the parameter and sends the fax at 9600.
2006 Nov 15
2
T38 problem
I have problem with fax machine Panasonic DX600. It's connected to Grandstream Handy Tone 386 which is connected to Asterisk. Asterisk is connected to my SIP provider.
To some numbers I can't send FAX, and I get following error on CLI.
WARNING[2237] chan_sip.c: Unknown SDP media type in offer: image 31358 udptl t38
I believe that Panasonic DX600 machine supports T38. And when I have
2006 Jan 27
2
WARNING: chan_sip.c:3470 process_sdp: Unknown SDP media type in offer: image 5004 udptl t38
Hi,
I'm using asterisk 1.2.1.
Is there anybody out there who knows what this warning means?
*WARNING: chan_sip.c:3470 process_sdp: Unknown SDP media type in offer:
image 5004 udptl t38*
Google does not help at all.
TIA
Giorgio Incantalupo
2006 Nov 13
2
FAX using T38
Dear all,
I'm trying to enable Asterisk to work with FAX using T38. I've tried
Asterisk 1.2.4 with the available patch found at URL
http://bugs.digium.com/view.php?id=5090 and also with the new 1.4 Beta3
that is announced to support it too.
With both Asterisk versions, I've sent with success FAXes between two
FAX machines each one attached to an ATA interface, both registered in
2009 Apr 26
3
Digium fax force T38?
Is it possible to force T38 for all invocations ReceiveFAX() ?
Receiving fax always worked OK on Callweaver though I could put
SipT38Switchover() into the dial plan.
I can't with Digium fax, and it always fails at the point it decides to switch
to T38.
2009 Nov 07
1
Asterisk 1.6.1 + Cisco AS5300 + Fax T38 ?
Hi
I have finished the installation of my VoIP basic configuration ...
Actually:
- All calls from my E1 are received by a Cisco AS5300 and sent to my
Asterisk (in G711 by SIP).
- All user are connected by SIP to the Asterisk
- All calls from User are sent by asterisk to the Cisco AS5300
Now, i want see if i can supply T38 Fax Gateway ....
I am search to:
- Cisco Receive all
2006 Mar 15
1
Development news :: T38 passthrough
I found a bug in the latest T38 passthrough patches, the effect
is that a non-SIP call after being put on hold is then lost, no
resume is possible.
The fix is to be applied in the chan_sip.c file:
} else {
/* No bridged peer with T38 enabled*/
transmit_response_with_sdp(p, "200 OK", req, 1);
}
- }
+ } else transmit_response_with_sdp(p, "200