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

[brian k. west]

On a side note ULAW to ALAW doesn't transcode.  Their is a direct ulaw to
alaw path in asterisk that munges the proper bits and uses little if any
CPU.

bkw

----- Original Message ----- 
From: "Peter Svensson" <psvasterisk at psv.nu>
To: <asterisk-dev at lists.digium.com>
Cc: <oej at edvina.net>; <jaz at ezork.com>; "Thomas Haeger"
<thomas.haeger at beronet.com>; "ePyron Felix Deierlein" <fd at ePyron.de>
Sent: Saturday, June 12, 2004 1:47 PM
Subject: RE: [Asterisk-Dev] Overlap digits on pri-E1 etc in Sweden


> 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
>
>
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