Package A = PRI
Package B = Channelized T1 (CT1)
IMHO, it depends on what you want to do. If you want to offer 64K (or
128K, or any multiple of 64K) ISDN service, get Package A. If ISDN isn't
that important and you want the additional port, get Package B (which can
still do ISDN, but it'll be at 56K per channel).
I prefer PRI (what PacBell is telling you is Package A) and use it in my
Bellsouth-served POPs, but in some areas, I have CT1 because Allhell...
'scuse me, Alltel... can't do PRI (ok, so the truth is that they won't, not
that they can't).
The PM3 handles either one beautifully - in fact, the PM3 with 2 T1 ports
can handle one of each.
Essentially, it's up to you - there's not necessarily a "recommended" one
(though with PRI you do get such nice features as caller ID logging via
RADIUS)
Dave Stewart
System Manager
Homenet Communications, Inc.
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