[asterisk-users] Interfacing pri card to legacy pbx

[Tom Moore]

Actually what I'm doing is interfacing the legacy pbx and converting it to
use sip for its way out to the world.
The phone vender I'm working with says his system requires b8zs signaling
and uses the esf frame type.

Tom

 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Nicolas Ross
Sent: Tuesday, July 15, 2008 8:49 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Interfacing pri card to legacy pbx

I cannot tell for sure for any system, but we have an old Portmaster PM3 
hooked-up from one port of our Sangoma A104d card, another one being from 
telco.

So, yes you can "emulate" the telco from a sangoma A10x card. Here's what I 
have in my zapata.conf :

;Sangoma A104 port 1 [slot:12 bus:0 span: 1]
switchtype=national
pridialplan=unknown
signalling=pri_cpe
group=1
channel => 1-23

;Sangoma A104 port 2 [slot:12 bus:0 span: 2]
echocancel=no
pridialplan=national
signalling=pri_net
group=2
channel => 25-47

You might have noticed that the signalling is different for both port. 
pri_net being the "telco emulatin" one. The clock needs also to be set on 
"master" in the wancfg utility.

Another thing, you might want to consider using a 2 port card for that, 
because the clock master needs a reference and I can't tell for sure if 
it'll work with a reference from another card.

Regards,

Nicolas


> Hi guys,
> Can I use a Sangoma a101 to interface a legacy pbx to an Asterisk server?
> The pbx doesn't have sip and I want to come in off of a sip trunk and
> interface with the older system.
> I know I can use a pri card to hook in to the phone network, but can I use
> this same card to feed back the signaling as if I were the phone company 
> to
> the older system?
>
> Thanks,
> Tom


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