[Asterisk-Dev] Overlap digits on pri-E1 etc in Sweden

[Peter Svensson]

On Thu, 10 Jun 2004, ePyron Felix Deierlein wrote:

> does it work with your changes? If yes, could you send a diff-file?
> We have the same problems in germay...
> 
> > -----Original Message-----
> > From: asterisk-dev-admin at lists.digium.com 
> > Peter Svensson
> > 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:

We have finally integrated the machine running Asterisk wiht our pstn
connection (E1 pri) and out pbx (Panasonic KX-TD1232 with E1 pri). Some of
the changes we had to make are rather hackish in that they treat the 
symptoms and not the cause. 

Anyway, I have submitted the important ones to the bug tracker at 
http://bugs.digium.com/. They are:
  1831 : Overlap dialing not accepted after (premature) proceeding on PRI
  1832 : No dial tone on a TE405P in PRI mode  
  1833 : Problems handling incoming alerting and incoming connected on a pri
  1834 : Swedish indications

We also changed the app_meetme conferences from ulaw to alaw so asterisk 
would not have to transcode alaw-ulaw just to pass data to the 
coneferencing system in zaptel since that already supports alaw data 
streams. 

Peter