[asterisk-users] Anyone have a reliable T.38 Solution

Frank Sautter asterisk at sautter.com
Thu Jan 5 04:04:38 CST 2012


On 04.01.2012 07:25, Matt Darnell wrote:
> We are looking to roll a solution that will have the following network layout:
> 
> ISDN-PRI <--> Asterisk <--> T.38 <--> ATA <--> Fax
> 
> Does version 1.8 with the Digium fax driver have this capability?  I
> like 1.8 because it is a long term support version.
> 
> What ATA's are people using?
> 
> Any working solutions would be great!

we are using such a setup:


Telco <-PRI-> bero*fixBox <-BRI-> Fritz!BoxFon <-analog-> FaxMachine
                  |
                  +--<-SIP-> Asterisk <-SIP-> Phones
                  |
                  +--<T.38-> t38modem <-tty-> Hylafax


The bero*fixBox http://www.beronet.com/product/berofix-gateways/ is has
one ISDN-PRI and 4 ISDN-BRI ports. The PRI-port is connected to the
telco, one of the ISDN-BRI ports is connected to an old Fritz!Box Fon
http://www.avm.de/en/Produkte/FRITZBox/FRITZ_Box_Fon/index.php which has
3 (newer ones only 2) analog ports.

The calls are routed by the bero*fixBox to either the asterisk server or
the hylafax server based on the DID number.
The bero*fix box has ~30 softmodems that translate to T.38-SIP which is
then connected to the t38modem on the hylafax server which handles
around 70,000 faxpages a month.
Outgoing (incoming only for test purposes) faxes from our analog fax
machines are routed by our asterisk server back to the bero*fix box so
we achive bit-slip-free (and therefore reliable) connection.

Beronet also has PCI- and PCIe-cards to be directly installed in your
asterisk server.

Frank



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