Upgrading Option 61 To Option 61C - Nortel Meridian 1 Manual

Upgrading option 61 to option 61C

This section describes upgrading a Meridian 1 option 61 to an option 61C.
Upgrading requires powering down the option 61, removing and replacing
the NT6D39 CPU/Network card cages with the NT5D21 Core/Network card
cages, and installing the release 21 software.
Do not begin a system upgrade unless you are thoroughly familiar with
the process for performing the upgrade. You must read through the
procedure you will use before you begin the upgrade.
Before any upgrade, we strongly recommend that you perform a thorough
audit of the existing system:
— Verify the suitability of the upgrade package you are considering.
— Resolve any existing operational problems, error messages, or other
problems.
— Check for minimum vintage requirements on all circuit cards that will
remain in the system.
— Verify that all equipment needed for the upgrade has been identified.
Performing this upgrade will require system downtime. Schedule for
this when planning the system upgrade.
Because an option 61 has both CPU/Network modules in the same column,
power to the entire column must be shut off to accomplish the upgrade. This
will cause loss of service to the whole telephone system. The upgrade must
be planned for a time when the impact to the telephone users will be minimal.
Upgrade system installation Upgrading to Meridian 1 system options
Meridian 1 option 61 upgrades
CAUTION
CAUTION
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