asterisk users - Sep 2004 - Re: Re: Re: Confused of London - How to associate zapchannels to extensions

----- Original Message ----- 
<snip>
> That's what I was afraid of - we have more extensions than channels ...
the number of extensions isn't the issue.  it is the signal the meridian
broadcasts when your digital telephone on your desk is on/off hook, or
ringing or whatever.  if you could tap into that information and monitor it
with something similar to *'s manager interface then you could probably
adapt it to work just fine.  the real problem sounds like you want * to know
the status of the extensions on the meridian.  good luck.  that probably
isn't going to be possible.  the presence capabilities of standard telephone
systems are written in super proprietary formats.
>
> Thanks for your help.
>
> Now - does anyone know if a pri card for the meridian is limited to 32
> channels (max) or is it the isdn pri line that is limited ? IOW, can I
> define 64 channels into the pri card from * , and 10 channels from * into
> the isdn pri line ?
T-1/PRI is a standard that in the US = 24 channels and in more advanced
countries (note I am in US, a citizen, etc. not trying to make political
statement here) = 32 channels.  you cannot define more than those channels
on any individual span.

Jason Kawakami

On Thu, 30 Sep 2004, Jason Kawakami wrote:
> T-1/PRI is a standard that in the US = 24 channels and in more advanced
> countries (note I am in US, a citizen, etc. not trying to make political
> statement here) = 32 channels.  you cannot define more than those channels
> on any individual span.
An E1 has 32 channels, one of which is used for timing and 
synchronization. When configured as a PRI one channel is used for the D 
channel (assuming normal CCS setup) leaving 30 B channels. 

A T1 has 25 channels, one of which is used for timing leaving 24 channels. 
I assume one channel is used for the PRI D channel leaving 23 B channels. 

Peter