[asterisk-users] Fax with asterisk

C F shmaltz at gmail.com
Wed Sep 24 13:54:45 CDT 2008


On Wed, Sep 24, 2008 at 5:43 AM, Rizwan Hisham <rizwanhasham at gmail.com> wrote:
> Hi all,
> Sorry to interrupt. I need some help regarding fax passthru mode.
>
> We are trying to configure fax passthru mode in asterisk using sip. For out
> of network calls/fax we use trunk configuration. i am using asterisk 1.4.2.
> The user has to use fax machine connected to their ata and dial the callee
> number, the call is originated just like a regular voice call. have not
> defined any special context for sending faxes. Have enabled t38 and
> canreinvite in peer/user and trunk configuration. But the fax is not going
> thru. Our service provider does support fax passthru. Following is the trunk
> and user/peer configuration:

They support passthru, and the originating send fax is what? PSTN? or
VoIP ATA with t38 support?
There has to one that does the t38, if the point where it gets
converted to VoIP does not support t38 then passthru will not help
you.

>
> TRUNK CONF
> [TRUNK-OUT]
> type=peer
> host=XXX
> port=5060
> context=default
> country=us
> dtmfmode=rfc2833
> restrictcid=no
> canreinvite=yes
> insecure=no
> disallow=all
> allow=ulaw
> allow=alaw
> allow=g729
> allow=gsm
> promiscredir=yes
> t38_udptl=yes
>
> USER/PEER
>
> [abc]
> username=abc
> type=friend
> secret=123
> qualify=25000
> nat=yes
> mailbox=12129339037
> insecure=port,invite
> incominglimit=2
> outgoinglimit=2
> intl_trunk=TRUNK-OUT
> local_trunk=TRUNK-OUT
> host=dynamic
> dtmfmode=inband
> context=uscan
> canreinvite=yes
> callerid="Rizwan Qureshi" <12222222222>
> accountcode=1:0:abc
> amaflags=default
> disallow=all
> allow=ulaw
> allow=alaw
> allow=gsm
> t38_udptl=yes
>
>
> Any solutions?
>
> On Tue, Sep 23, 2008 at 10:21 PM, Andrew Joakimsen <joakimsen at gmail.com>
> wrote:
>>
>> On Tue, Sep 23, 2008 at 10:02 AM, Steve Totaro
>> <stotaro at totarotechnologies.com> wrote:
>> > ATAs work OK I guess, just make sure to use a loss less codec such as
>> > ULAW.
>>
>> Since the OP stated he is using E1 lines then he should probably be
>> using alaw instead.
>>
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>
>
>
> --
> Best Regards
> Rizwan Hisham
>
>
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> AstriCon 2008 - September 22 - 25 Phoenix, Arizona
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