[Asterisk-Users] CT1 and callerid / DNIS

[Stephen J. Wilcox]

> > Can you set outbound callerid on a channelized T1?
> 
> >DTMF passed before the call. It is unlikely though that you will find
> >someone interested in doing that though. It is easier/cheaper to drop a
> >PRI into somewhere and then outbound caller ID isn't kludgey with DTMF. 
> 
> The service you might be referring to is Dialed Number Identification Service
> (DNIS) that is put on T1's for inbound 800 and 900 lines.  This is an inband
> delivery of the last 4-digits of a dialed number (800/900) that is passed into
> the PBX from the SP for callcenter or other routing.  Does Asterisk support
> this?

Perhaps I'm not understanding the question but you can arbitrarily set the
inbound/outbound DNIS and CLI (inbound=outbound, just a matter of orientation).  
The 4 digit DDI thing is a limit in some protocols (DASS) but I'm assuming we
are talking about q931 ISDN here? in which case the strings can be quite long..  
Theres a whole bunch of other flags that you typically dont get access to unless
you're the network operator, its also common practice (here in the UK) for the
telco to override your CLI on your outbound calls either to withhold it or to
the main number of the PRI altho it is possible for them to allow you to set it
from your side, either to a limited set of values (your pstn numbers) or if
theyre really generous any number.

Steve