[Asterisk-Users] Can one send CLID NAME over PRI?

[Alfred R. Nurnberger]

I ran a PRI DEBUG SPAN 1 on our office system.
I could not see any FACILITIES messages on outgoing calls over the PRI.
So I suppose * does not send the CNAME messages at all on outgoing calls.

CLID NAME is just a subset of the generic user to user messaging on ISDN
networks.

It should be possible to send characterset IE5  u2u messages and have them
show up on other ISDN compatible phones. btw. The GSM standard for
cellphones is based on ISDN.

Any comments on that ?

- Alfred

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of John Todd
Sent: Sunday, June 27, 2004 8:05 PM
To: asterisk-users at lists.digium.com
Cc: gavron at aces.com
Subject: Re: [Asterisk-Users] Can one send CLID NAME over PRI?


At 2:17 PM -0700 on 6/25/04, Ehud Gavron wrote:
>Is it possible to send CLID NAME on a PRI?
>
>The numbers we send out are being received by telco and propagated,
>but the names we send out are not showing up.
>Is this a feature in PRI?  Do we need to set PRI_NET instead of PRI_CPE?
>Is this just not possible?  Is this a telco config issue?
>
>Thanks for your help... I've read voip-info, and various other sources, and
>search engines, and google... with no success.
>
>Ehud
>[snip]

No, CNAM (Caller NAMe) data is looked up via caller ID digit
information by the far end (or somewhere in the middle.)   This is a
vestige of telephone companies wanting to control the entire process
from the center, versus the "next-generation" systems like VoIP
wanting to control it from the edges.  Welcome to the first ring of
hell; it gets warmer the closer you get to SS7.

You cannot (yet) transmit this information to any providers in North
America, so far as I am aware.  You would have to pay your upstream
PSTN (SS7) carrier to insert these records in some central database,
probably Verisign or the ILEC from which the number is purchased.  If
you don't "own" the numbers that you're transiting, then you're out
of luck.

An interesting trick between Asterisk servers might be to use the UUI
(User-to-User Information) data that is part of the PRI q.931
specifications.  It is unknown at this time how many carriers
actually pass UUI data from end-to-end, and there currently exist
only a few sparse patches for Asterisk that deal it.

For some additional discussion, use Google or start here:

http://lists.digium.com/pipermail/asterisk-dev/2003-September/001748.html


JT
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