[Geopriv] RE: [Ecrit] Circuit ID

It turns out I was wrong about the Circuit ID and RADIUS. I just can't
seem to keep up with the architecture changes going on.
Yes, in newer equipment, the Access Node (DSLAM) adds the Circuit ID to
both DHCP and PPP protocols. This is copied into the message sent to
RADIUS.
Barbara

-----Original Message-----
From: Stark, Barbara
Sent: Wednesday, April 25, 2007 11:28 AM
To: Clive D.W. Feather; Henning Schulzrinne
Cc: GEOPRIV; ECRIT
Subject: RE: [Ecrit] Circuit ID

Circuit IDs have nothing to do with RADIUS, that I'm aware of.
"Circuit ID" format is defined by whatever system an access company uses
to manage its inventory of circuits. The most common such system in the
US is TIRKS(R), which is now developed by Telcordia. It was initially
developed by AT&T Bell Labs in the late 1970's. Fortunately, it has
managed to evolve a bit since then. Most of the baby Bells continue to
use it, I think.
There's a really short Wikipedia description of TIRKS at
http://en.wikipedia.org/wiki/TIRKS
In short, a Circuit ID uniquely identifies a circuit within an access
provider's operations systems. Many different types of circuits exist
(POTS, T1, DS3, SONET, etc.). Different types use different formats.
Barbara

-----Original Message-----
From: Clive D.W. Feather [mailto:clive@demon.net]
Sent: Wednesday, April 25, 2007 4:37 AM
To: Henning Schulzrinne
Cc: Stark, Barbara; GEOPRIV; ECRIT
Subject: Re: [Ecrit] Circuit ID

Henning Schulzrinne said:
> Just out of curiosity, what does a circuit ID look like? Is that the
> NAS identifier used in RADIUS or where is it visible?

In the UK it's not currently standardised, though we're looking at it. I
would *expect* it to end up something like BT-EA12345678 or
001-EA12345678 where the first part identifies the circuit owner (either
a short name or a
CUPID) and the second half is decided by the provider; BT appear to use
a two letter region code followed by an 8 digit number).

>> Actually, given requirements for "naked" DSL, without an underlying
>> POTS phone number, we're moving to "Circuit ID".

That's not the only scenario - the UK is looking at an arrangement
whereby one telco (Openreach, part of BT) provides the circuit and
another telco provides the call server and thus the number; Openreach
and BT will have no visibility of the number - if any - allocated to the
line.

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