[Asterisk-Users] * point to point t1 solution?

Thu Jan 26 06:19:49 MST 2006

That would not be a nailed up t1 - signaling at both ends would be via asterisk.

I was trying to determine if there is a way to configure asterisk to emulate a ptp t1 passively (no signaling) - essentially providing the same type of end to end circuit you would get if you ordered a point to point esf/b8zs t1 from the telco.

I know how to set up asterisk to talk to the Nortel (where the Nortel thinks asterisk is a telco trunk) - but that is not my goal here.

I want to replace a T1 TIE TRUNK between to Nortel's using Digium t1 interfaces and an IP link between asterisk boxes, but still allow the Nortel to pass signaling directly back and forth.

Still want to take the challenge?

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Sean Cook
> Sent: Thursday, January 26, 2006 6:12 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] * point to point t1 solution?
> 
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> 
> Damon Estep wrote:
> > Jean-Michel,
> >
> > I agree with all of your comments, and would be willing to bet $100 that
> NO AMOUNT OF GOOGLING will answer this question definitively.
> 
> I would almost be willing to take that bet... find your exact
> configuration is probably not going to happen... however finding enough
> information to piece it together is pretty straight forward...
> 
> http://www.tek-tips.com/viewthread.cfm?qid=1082800&page=10
> 
> This link tells you that someone else has connected asterisk to a T1
> interface on a Nortel NorthStar.   (first link for asterisk nortel
> northstar).
> 
> http://www.voip-info.org/wiki-Asterisk+Zaptel+Installation
> 
> Whould give you a start as to how to configure the T1 card (zaptel
> drivers).
> 
> http://www.voip-info.org/wiki/index.php?page=Asterisk+config+zaptel.conf
> 
> Would give you a start to configure the zaptel.conf
> 
> 
> http://www.voip-info.org/wiki-IAX
> 
> Gives you the skinny (no pun intended) on IAX and working with it to set
> up the trunk...
> 
> 
> So it would be logical to assume that if you can connect to the nortel
> and asterisk can talk to asterisk via (iax or sip or anything else) ...
> you only need to set up an appropriate dial plan to pass extensions back
> and forth.
> 
> In /etc/zaptel.conf:
>    span=1,1,0,esf,b8zs
>    bchan=1-23
>    dchan=24
> 
> In /etc/asterisk/zapata.conf:
>    switchtype=national
>    context=from-pbx2
>    signalling=pri_cpe
>    group=0
>    channel => 1-23
> 
> 
> [from-iax-trunk]
> ; yeah i know this wouldn't be recommended...
> exten => _X.,1,Dial(ZAP/g0/${EXTEN},20)
> 
> [from-pbx2]
> ; still not recommended...
> exten => _X.,1,Dial(IAX/pbx2/${EXTEN},20)
> 
> 
> This is not "Uncharted Territory" this is thinking about something as a
> sum of its parts not as if "No one else has a solution just like me"
> 
> >
> > After reviewing Adrian Carters very informative response regarding TDMoE
> I am getting closer to what I need to know (now my googles include
> "asterisk" AND "TDMoE").
> >
> > This is CLEARLY uncharted territory, while I'll bet it has been done
> before, no one took the time to document it.
> >
> 
> No it isn't... I know plenty of people who have connected legacy systems
> to IP.  I am doing it with a Merlin Legend.
> 
> > My return to the list if I am successful will be to document the config
> on the wiki... fair exchange?
> >
> > And, if along the way I find an EXPERT in this area with REAL WORLD
> PRODUCTION EXPERIENCE I will gladly pay the fees, but I am not about to
> shell out anything to pay some know-it-all to educate themselves and
> provide me a half baked solution that has never been put to the real world
> test.
> 
> If you are LOOKING for REAL WORLD, EXACT RepReSenTAtions  (sorry
> couldn't resist) of exactly what you have... you are probably going to
> be out of luck.  But consider this:
> 
> 1.  There is plenty of ducumentation on connecting Legacy Systems to
> Asterisk
> 2.  There is plenty of documentation on connect two asterisk systems to
> eachother.
> 
> 
> 
> >
> > D
> >
> >
> >
> >
> >>Damon Estep a écrit :
> >>
> >>
> >>>Jean-Michel,
> >>>
> >>>You missed the entire point - the question is IS ASTERISK CAPABLE OF
> >>
> >>EMULATING A POINT TO POINT T1 BETWEEN 2 BOXES, AND IF SO ARE THERE ANY
> WEB
> >>BASED HINTS I MIGHT LOOK AT?  Not WILL YOU DO IT FOR ME?
> >>
> >>>
> >>Yes, I think Asterisk can do what you are trying to achieve. No, I don't
> >>know how to do it, and no I won't do it for you since I've never been in
> >>the situation you're in.
> >>
> >>As for "web based hints", with some experience I've found that google is
> >>as good as asking the mailing list. If you have no success with the
> >>mailing list, the wiki (voip-info.org) and google, you can try the irc
> >>channel #asterisk on freenode.
> >>
> >>If that still doesn't work, shelling out a few hundred bucks for a
> >>consultant to help you do it - and train you in the process - is the
> >>other alternative, and is often a good deal.
> >>
> >>I've done it a couple of times myself, and it's awesome how far people
> >>can get you and how hard they try when you recognize the value of their
> >>work with some money (as opposed to just asking nicely).
> >>
> >>Cheers,
> >>Jean-Michel.
> >>
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