[Asterisk-Users] E1 config help and guidance

[Storer, Darren]

Hi Julian,

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

Something like this?:

                  ---------------------
                 |                     |
 PSTN <---span1--| CPE  Asterisk   NET |--span2---> Nortel
                 |                     |
                 |                     |
                  ---------------------


Assuming that you connect your incoming Telco PRI (PSTN) to span1 and the
Nortel PBX to span2 (as depicted above) the lines below should help:

Extract from zaptel.conf
========================

span=1,1,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16
span=2,0,0,ccs,hdb3,crc4
bchan=32-46,48-62
dchan=47

Extract from zapata.conf
========================

pridialplan=local
switchtype = euroisdn
signalling = pri_cpe

group = 1
channel => 1-10
switchtype = euroisdn
signalling = pri_cpe

group = 2
channel => 32-41
switchtype = euroisdn
signalling = pri_net

In the config lines above, span1 is set to take timing from the PSTN whilst
span2 is configured to "give" timing to the Nortel. Span1 will behave like a
piece of CPE (PBX) and span2 will behave like the NETwork.
NB. The channels in group 1 and 2 are depleted as you only have 10 channels
enabled on your PRI.

After you have implemented the changes above (or any subsequent changes to
the low level PRI config) you should, at the very least, remember to restart
the Asterisk system or, as Critch advises, power down and up again.

HTH

Darren
--
Comgate
Telco>Internet<Broadcast

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of asterisk
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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