[Asterisk-Users] T100P PRI question

Rich Adamson radamson at routers.com
Fri Dec 10 16:36:24 MST 2004


> > > > Some telco's do, some telco's don't. The text "Rarely used for PRI" is IMO a
> > > > location-centric and carrier-centric statement. As another poster suggested,
> > > > PRI's are picky, and some carriers are super-picky so it's always best to
> > > > dot your i's and cross your t's when dealing with PRI. At worst, it will be
> > > > ignored by the switch. 
> > > 
> > > Actually, the worst that can happen is not being able to dial out the 
> > > PRI to numbers that are not "national", "local", or "international".
> > 
> > This is incorrect. The numbers you send must be formatted differently 
> > depending on what ton/npi you claim they are in. With "national" (the 
> > asterisk default) you can not dial internationally if the switch is set up 
> > according to itu specs. 
> > 
> > Also, a lot of switches will not accept all ton/npi combinations.
> > 
> > "Unknown" should really be the default. This allows you to send numbers 
> > the way they are dialed on a POTS line, most of the time. As a second 
> > option "international" is good since that allows all numbers to be dialed, 
> > but you will have to prefix non-intrnational numbers with your country 
> > code.

As a final followup for the archives since this is now working, the 
correct way to handle outbound calls for this pstn service provider 
(Cox Cable) was to use pridialplan=unknown (per the provider). With 
this parameter, essentially any number of digits can be sent to 
them (eg, 7 digit, 10 digit).

As a side note, they allow CallerID Num to be forward to them and they
accept it, but they do not accept any form of CallerID Name at all.

Rich





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