[Asterisk-Dev] Passing overlap digits from one pri-E1 to another

[ePyron Felix Deierlein]

Hello Peter,

does it work with your changes? If yes, could you send a diff-file?
We have the same problems in germay...


Thanks


Felix 

> -----Original Message-----
> From: asterisk-dev-admin at lists.digium.com 
> [mailto:asterisk-dev-admin at lists.digium.com] On Behalf Of 
> Peter Svensson
> Sent: Wednesday, June 09, 2004 11:29 PM
> To: asterisk-dev at lists.digium.com
> Subject: [Asterisk-Dev] Passing overlap digits from one 
> pri-E1 to another
> 
> In Sweden overlap dialing is the norm due to our varying 
> length phone numbers. I am currently interfacing asterisk to 
> our telco and our existing pbx through two E1 links off a 
> TE405P. The pbx sends all digis as single overlap digits 
> regardless of how they are dialed.
> 
> Most things work as expected. However, there seems to be a 
> problem with overlap digits. We have an extension
>   exten => 0,1,Dial(Zap/g1)
> that sends the connection from the pbx to an outside line 
> immediatly. This works, but no further digits are passed. 
> After a bit of sifting through the source I found that the 
> INFORMATION elements from the pbx are stopped in 
> libpri/q931.c q931_receive() by the following test:
> 
>   if (c->ourcallstate!=Q931_CALL_STATE_OVERLAP_RECEIVING)
>       break;
> After the dial command is executed the digits are dropped 
> since ourcallstate==Q931_CALL_STATE_INCOMING_CALL_PROCEEDING. 
> 
> I have tried allowing that state as well and this seems to 
> work. Is this the correct way to solve this?
> 
> Another problem occurs when the pbx sends a long dialstring 
> by itself. 
> There is a window between deciding which extension to use and 
> having seized the b channel and set up the call. Incoming 
> digits during this interval are neither remembered nor passed 
> to the outgoing channel by app_dial. 
> 
> Peter
> --
> Peter Svensson      ! Pgp key available by finger, fingerprint:
> <petersv at psv.nu>    ! 8A E9 20 98 C1 FF 43 E3  07 FD B9 0A 80 72 70 AF
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