One thing to note is that the 2600 series routers do not support NFAS.
We went round and round with TAC on this for a week or so; the end
result was to use a 3600 series or higher router. We were told that NFAS
support is planned for the 2600's but at an unknown date.

tm

Tim Medley - CCNP+Voice, CCDP
Sr. Network Architect
VoIP Group
iReadyWorld

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] 
Sent: Monday, June 10, 2002 4:19 PM
To: [EMAIL PROTECTED]
Subject: RE: redundant pri's ?? [7:46203]

Brian,

The easiest solution from understanding your problem is to order an
additional Pri from your service provider and have them configure the
trunks
using NFAS (Non-facilities associated signaling)  This will allow you to
increase the B channel count by 24 and retain the same dial number for
inbound calls.  NFAS allows multiple Pri circuits to use a single
D-channel
to control signalling for all of the Pri's in the group.  You gain the
24th
B channel on the Pri since no D-channel is required.  You will need an
additional Pri ports on your HQ router because they are goingto hand you
another physical circuit.  The catch is that some service providers I've
run
into only allow a few Pri's in an NFAS configuration, even though a
single
D-channel has the capabiltity to signal for up to 28 T1's (or a DS-3).
As
for the single IP, it will stay on the serial0:23 (ex.) interface of
your
D-channel.
  
Hope this helps.




Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=46228&t=46203
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