Posted: Sat May 30, 2009 8:43 pm Post subject: [asterisk-users] Problem T.38
Boa Tarde Lista.
I'm having problems in tramissão a fax using T.38.
My scenario is:
Asterisk 1.6.0.5
2 ATA of Intelbras 2210.
ReceiveFAX in the asterisk.
Unable to fax when it is a ATA to another user on the Asterisk means, if I directly between the ATA works perfectly, is a step to the ATA ReceiveFAX of Asterisk works perfect, but if I try to pass between two Branches using the same ATA does not work ever.
I did a tcpdump and when after listening to the signal for a fax transmission, the network traffic for RTP, and only the end of the connection timeout in the show some more data from SIP protocol and the connection drops.
Example of the signal is given when a fax:
18:05:28.931701 IP XX.XX.XX.67.1024 > XX.XX.XX.66.sip: SIP, length: 439
18:05:29.047186 IP XX.XX.XX.67.1024 > XX.XX.XX.66.sip: SIP, length: 573
18:05:29.163231 IP XX.XX.XX.67.1024 > XX.XX.XX.66.sip: SIP, length: 439
18:05:31.336965 IP XX.XX.XX.67 > XX.XX.XX.66: ICMP XX.XX.XX.67 udp port 17003 unreachable, length 36
18:05:36.339933 IP XX.XX.XX.67 > XX.XX.XX.66: ICMP XX.XX.XX.67 udp port 17003 unreachable, length 36
18:05:41.338790 IP XX.XX.XX.67 > XX.XX.XX.66: ICMP XX.XX.XX.67 udp port 17003 unreachable, length 36
But when using ATA ReceiveFAX for the RTP traffic is constant until the passage of the fax.
The next sip debug peer at the time that the fax is not:
<------------>
-- SIP/2007618-b7cb7cf8 is ringing
-- SIP/2007618-b7cb7cf8 answered SIP/2005618-08bd3e50
Audio is at XX.XX.XX.66 port 30206
Adding codec 0x100 (g729) to SDP
Adding non-codec 0x1 (telephone-event) to SDP
Posted: Sun May 31, 2009 6:18 pm Post subject: [asterisk-users] Problem T.38
On Sat, May 30, 2009 at 5:38 PM, Daviramos Roussenq Fortunato
<daviramosrf@gmail.com> wrote:
Quote:
I'm having problems in tramissão a fax using T.38.
My scenario is:
Asterisk 1.6.0.5
2 ATA of Intelbras 2210.
ReceiveFAX in the asterisk.
Unable to fax when it is a ATA to another user on the Asterisk means, if
I directly between the ATA works perfectly, is a step to the ATA ReceiveFAX
of Asterisk works perfect, but if I try to pass between two Branches using
the same ATA does not work ever.
I do not understand your call flow where the fax is not succeeding. Is it:
asterisk -> ATA branch A -> ATA branch B -> asterisk
Do you have to use the Intelbras ATAs? Does the Intelbras require that
you use T.38? Do they support any other faxing methods?
_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
On Sat, May 30, 2009 at 5:38 PM, Daviramos Roussenq Fortunato
<daviramosrf@gmail.com (daviramosrf@gmail.com)> wrote:
> I'm having problems in tramissão a fax using T.38.
> My scenario is:
> Asterisk 1.6.0.5
> 2 ATA of Intelbras 2210.
> ReceiveFAX in the asterisk.
>
> Unable to fax when it is a ATA to another user on the Asterisk means, if
> I directly between the ATA works perfectly, is a step to the ATA ReceiveFAX
> of Asterisk works perfect, but if I try to pass between two Branches using
> the same ATA does not work ever.
I do not understand your call flow where the fax is not succeeding. Is it:
asterisk -> ATA branch A -> ATA branch B -> asterisk
Do you have to use the Intelbras ATAs? Does the Intelbras require that
you use T.38? Do they support any other faxing methods?
_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
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