Nortel Meridian 1 Manual page 931

3 Transfer the network cards from the existing network shelves to the new
Network Modules. In the new modules, the first network group is always
equipped as a functional network group, so it already contains IGS, 3PE,
PS, and BTU cards and is ready to accept network cards. Additional
groups may be engineered in several ways:
• Additional network groups may be ordered as pairs of empty
Network Modules. In this case, all necessary cards from the existing
network shelves are transferred to the network modules. This
method reuses the greatest number of existing cards, but may result
in a lengthier upgrade process and greater downtime.
• Additional network groups may be ordered as pairs of Network
Modules already equipped with the network common cards (such as
IGS, 3PE, PS, or BTU). In this case, only the actual network cards
need to be transferred. This method is recommended.
Upgrade system installation Upgrading to Meridian 1 system options
Upgrades to Meridian 1 option 81 12-167