[Asterisk-Users] Fax and codecs preferences to PSTN

[Obaid Siddiqui]

Hi,
I am using the exact scenario you are using (As5400-asterisk-ata's). But I
have not reached to fax
issue yet.
I tried codec g729 for voice call, it is not working. I think you have to
buy g729 from digium.

Since both my Asterisk and SIP clients are in different NATS , I have to do
the painful part of port forwarding for every client.  Specially if I have
more then one client on same NAT, what needs to be done.

Voip-wiki suggest using SER or STUN. Can SER and  MyStun can be installed on
same Server where Asterisk is residing.

Will somebody suggest anything.

Regards,
OMS
Prizm Communications



----- Original Message ----- 
From: "René Mayorga" <rmayorga at saltel.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Wednesday, June 01, 2005 12:05 PM
Subject: [Asterisk-Users] Fax and codecs preferences to PSTN


Hi,
I have an asterisk running with a passtrought conf with G729,
when I try to send a fax from SIP to SIP  the ATAs make a good codec
negociation and the fax transmicion is OK,

But when I try to send the fax to PSTN fax machine
(SIP --> AS5400 --> PSTN)
The ATA Device try to send the RTP with G711ulaw and the Cisco keep
answereing with G729
a snip some part of my confs.

< sip.conf >
[general]
port=5060
bindaddr=0.0.0.0
context=default
allow=g729
.
.
.
[22194007]
type=friend
host=dynamic
secret=22194007
canreinvite=yes
callerid=ATA Sipura FAX <22194007>
.
.
.

[as5400]
type=friend
host=XXX.XXX.XXX.XXX
canreinvite=yes
insecure=yes
insecure=very
qualify=yes

</sip.conf>


<as5400>

dial-peer voice 999001 pots
 description PRUEBAS SIP
 max-conn 3
 destination-pattern 65732.%
 progress_ind alert enable 8
 port 7/5:D
!
dial-peer voice 999000 voip
 description PRUEBAS SIP
 destination-pattern 2219400.
 session protocol sipv2
 session target sip-server
 dtmf-relay h245-alphanumeric
 fax-relay ecm disable
 fax rate 9600
 fax nsf 000000
 fax protocol pass-through g711alaw
 no vad

</as5400>

Thanks in advance
-- 
René Mayorga
Internet & Data
El Salvador Telecom S.A. de S.V.
Tel:(503) 2247-7246
    (503) 2247-7156
Cel:(503) 7962-8205

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