[Asterisk-Dev] T.38 pass-through / T.38 support

Brian West brian.west at mac.com
Fri Jun 3 19:44:14 MST 2005

But the UDPTL stream is NOT going thru asterisk at all.  You're  
having to allow re-invites thats for sure.


On Jun 3, 2005, at 2:39 PM, Matthew Boehm wrote:

> Steve Underwood wrote:
>> They must be bypassing * then. * has no way to pass-through a UDPTL
>> stream right now. I don't see how it would even bypass a T.38 stream,
>> though. It lacks the ability to negotiate one.
> I know you find it hard to believe Steve, but I guarantee you this  
> is what
> happens:
> Caller on PSTN dials ATA fax. Call is routed to AS5300 over PRI. Call
> becomes T38. 5300 sends call to Asterisk and on to ATA via SIP. The  
> warning
> messages about UDPTL t38 that I said previously display during the  
> transfer
> of the fax. Call completes and fax looks great.
> Or
> Call originates from ATA. Asterisk sends call to 5300. 5300 says  
> its T38.
> The 5300 will, depending on if local or LD call, terminate either  
> PRI to
> PSTN or to carrier via H323. Call completes and fax looks great.
> All of it goes thru asterisk at some point.
> -Matthew
> _______________________________________________
> Asterisk-Dev mailing list
> Asterisk-Dev at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-dev
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-dev

More information about the asterisk-dev mailing list