Hi folks,
Just inherited another disaster waiting to
happen.
Just been using Config Maker at cisco.com to spec up
the following.
2 x 3620, 2 x serial & 1E(LAN) for leased circuit,
ISDN for backup.
I've picked out the NM-1E2W card with the idea that
the least circuit can be future-proofed to 4Mb/s,
hopefully this is correct.
Main Problem : I'm looking at the ISDN PRI backup
solution, 1 port only and I don't understand the
difference between Balanced and Unbalanced apart from
the fact that the cables have a different Resistance
i.e 75 v 120.
I would be very grateful for any assistance.
Thanx,
Phil.
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