Nortel Networks NN43001-563 - Manual (Page 43)

IP trunk card description 43
Figure 6
Leader, DCHIP, and trunks in an IP Trunk 3.01 (and later) node
Card combinations
The Leader and DCHIP, or Follower and DCHIP, functions can reside on a
single IP trunk card or multiple IP trunk cards. If a Follower card is equipped
with a DCH PC card, it can function as a DCHIP trunk card. As an IP Trunk
3.01 (and later) node becomes larger with more trunk traffic, load balancing
should be configured. When load balancing is required, the Leader and
DCHIP functionality are placed on separate cards which are assigned
the least call traffic. For the largest IP Trunk 3.01 (and later) nodes and
networks, the Leader and DCHIP cards can be partially configured with
trunk ports or have no trunk ports at all.
An example configuration that allows for redundancy and backup is the
following:
• Card 1: Leader and DCHIP #1
• Card 2: Backup Leader and DCHIP #2
• Card 3: Follower #1 – 24 trunks connected with DCHIP #1
• Card 4: Follower #2 – 24 trunks connected with DCHIP #2
To support more trunks, more DCHs can be added. Each DCHIP card can
support a maximum of 15 NT0961AA ITG-Pentium 24-Port Follower cards
or 11 NTVQ90BA Media Card 32-port Follower cards. This limit is due to
the maximum limit of 382 trunks in an ISL route.
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.