[Asterisk-Users] PRI in and out

[C F]

One more thing, make sure that the cable between the Avaya and
Asterisk is a T1 cross over (don't confuse it with a regular
crossover) like this:
http://www.voip-info.org/tiki-index.php?page=crossover+T1+cable


On 9/7/05, C F <shmaltz at gmail.com> wrote:
> On 9/6/05, Rod Bacon <rod.bacon at empoweredcomms.com.au> wrote:
> > I am wanting to front-end a legacy PBX with an asterisk box. I have done plenty
> > of asterisk work over the last 6 months to PRI circuits, but not with a PBX
> > being involved.
> >
> > I know I can use asterisk and digium cards in this manner, but do I need
> > separate cards for the PRI -> Asterisk side to the Asterisk -> PBX side, or will
> > a 4-port PRI card do the job? (I already have a spare one of these).
> 
> Yeah, it's always better to use a single quad card then a pair of single cards.
> 
> >
> > In other words, can I use SPAN 1 as a timing source, then provide timing to the
> > PBX connected to SPAN 2 of the same card?
> >
> 
> Exactly.
> 
> Also set up the following (this is from a working example that I have
> between an Avaya and asterisk and the provider, like this Avaya <>
> Asterisk <> provider, span 1 is to provider, ans span 2 to Avaya):
> /etc/zaptel.conf
> setup your spans, with just the timing changed like you mention,
> and set
> bchan=1-23
> dchan=24
> span 2 goes here
> then:
> bchan=25-47
> dchan=48
> everythting else is the same.
> 
> /etc/asterisk/zapata.conf
> 
> the only difference between the first set of channels (1-23) and the
> second set of channels (25-47) is:
> signalling=pri_net
> group=1
> context = fromprovider
> channel => 1-23
> signalling = pri_cpe
> group=2
> context=fromavaya
> channel=25-47
> 
> /etc/asterisk/extensions.conf
> ;this is for a system where I get 2500 thru 2599 as DIDs from the
> provider whenever I move over a DID from the old system (avaya) to the
> new (asterisk) I add a line in the maindid context with the new
> extension, otherwise it just goes to the avaya, when a call comes from
> avayay it means that someone is making an outgoing call so I just pass
> it on to the providers span (group1)
> 
> [fromprovider]
> 
> include => maindid
> include => otherdid
> ;make sure it's in the above order, otherwise it will always be
> handled by the old system
> 
> [fromavaya]
> exten => _X.,1,Dial(Zap/g1/${EXTEN})
> 
> [maindid]
> exten => 2500,1,Goto(somecontext,${EXTEN},1) ;since 2500 already
> exists on this asterisk system just go there
> 
> [otherdid]
> exten => _25XX,1,Dial(Zap/g2/${EXTEN}) ;if I don't exist under maindid
> then I am still on the old avaya
> 
> you should also make sure to create t and i extensions.
> 
> Hope this helps.
>