[Asterisk-Users] E1 config help and guidance

[Steve Hanselman]

Doesn't matter which span you use, but the Telco span should be set as clock
1 and CPE, the Meridian span should be set as clock 0 and NET.

Use only the channels you have been assigned on the Telco end, you as many
channels as you want on the Meridian end.

Take a look to see the order that inbound calls come from the Telco and
outbound calls come from the Meridian (just place 2 calls sequentially with
pri debug span x), then make sure you allocate the channels accordingly
(there's an option in the Group for zaptel for top down etc down with the
character that precedes the group number).

That's about it.

Steve


-----Original Message-----
From: asterisk [mailto:asterisk at dotr.com] 
Sent: 09 July 2004 19:00
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] E1 config help and guidance

I've googled / voip-info'd / searched until my eyes are blurry, but couldn't
see the info I was looking for. I've turned here for help!

Asterisk CVS head (9/7/04)
Fedora Core 2 (updated to 2.6.6 kernel)
DE405P (jumpers set to E1)

I want to put asterisk in the middle of our current pbx (Meridian Option11)

Currently the meridian has a 2MB pri EuroISDN card linked via a rj-45 into a
euroISDN bearer. This bearer only has 10 channels activated (out of the 30).
Obviously, this works - handsets make external calls.

What I wanted to do was to add * to the mix, in the middle so that it can
intercept inbound / outbound calls and do what it needs to do, as well as
providing all the extra functionality that this wonderful product provides.

In order to achieve this, I assumed that I needed to take rj45 from the
bearer box and plug that into span 2, and take a cable from span 1 into the
bearer box.

My problem (and blurry eyes) come from not understanding the various
protocols to assign to each span. I want the meridian to think that it's
still plugged into the EuroISDN bearer. So span 2 should be set up as a
EuroISDN link ? What should span 1 be set up as ? What channels should be
configured ?

Any guidance (I'm not looking for the solution (would be nice!) but for
pointers in the right direction).

I have previously been able to set up asterisk using the x100p and graduated
to BRI isdn. I just got the 405 today and wanted to play!

Thanks in advance.

Julian.

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