[asterisk-users] asterisk and norstar

[Gustavo Berman]

Hi there!

We have an old legacy norstar phone system m8x24-ds ( dr5 ) and a couple of
m0x16. It has 5 external analog lines. It has no auto attendant, and no
voicemail. So every incoming call is forwarded to a operator, she pick up
the phone, talks to the caller and transfer the call to the right extension.

We are in Argentina, so buying a star talk is out of the question, there is
no selling of that in here.

So, we want to use * as an auto attendant and voicemail for our 50
extensions.

Is there anybody who has done that?

What topology do we have to use? :
1) pstn line -> (fxo) asterisk (fxs) -> norstar
or
2) pstn line -> (fxo/1) asterisk (fxo/2) -> ata -> (ext. 123) norstar
or
3) pstn line -> norstar (ext. 123) -> ata/1 -> (fxo/1) asterisk (fxo/2) ->
ata/2 -> (ext.321) norstar
or
4) pstnl line -> norstar (ext. 123) -> ata -> (fxo) asterisk

Any help please?
I'm not a telephone systems specialist!

Thanks!
-- 
Gustavo Berman
Sysadmin
Depto. Informatica
Universidad Nacional del Comahue
Centro Regional Universitario Bariloche
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