[Freeswitch-users] Commercial Fax over T.30 for FreeSWITCH

[Alex Crow]

On 03/05/12 08:08, Anita Hall wrote:
> Hi
>
> I am looking for a commercial product for Incoming Fax over T.30 for 
> FreeSWITCH.
>
> Like Commetrex is available for Asterisk, is there something for 
> freeswitch ?
>
> regards,
> Anita
>

Hi,

I use Hylafax with T38Modem (and gateway to T.30 in Freeswitch). Hylafax 
is as good as any commercial product, and I get at least 99.5% success 
using it with onboard analog modems. I've not sent or received hundreds 
of faxes over T38modem but I don't see why it should be any worse.

Just one question - are you running Freeswitch on a VM? Fax is very 
timing critical and I found running on a VM caused an awful lot of 
failures for T.30.


For outbound:

<extension name="faxout">
<condition field="ani" expression="^t38modem.*$"/>
<condition field="destination_number" expression="^(9\d{6,14})$">
<action application="set" data="absolute_codec_string=PCMU"/>
<action application="set" data="fax_enable_t38=true"/>
<action application="set" data="sip_execute_on_image=t38_gateway self 
nocng"/>
<action application="bridge" data="sofia/gateway/isdngw/$1"/>
</condition>
</extension>

For inbound:

<extension name="faxin" >
<condition field="network_addr" expression="<ip address of isdngw>"/>
<condition field="context" expression="default"/>
<condition field="destination_number" expression="^100([0-4])$">
<action application="bridge" data="{sip_execute_on_image='t38_gateway 
self nocng'}user/t38modem$1@${domain_name}"/>
</condition>
</extension>

Cheers

Alex