On-Line Module Swap

Designate a

Controller Station

Port

Troubleshooting the MERLIN II system somtimes involves replacing control unit modules. It is possible with Release 3 of the MERLIN II system, to remove and insert modules while the system is in operation.

NOTE: The Processor Module and Power Supply Modules cannot be removed using On-Line Module Swap. They require that the power be turned off to the control unit. The replacement module must be the same as the one removed (e.g., a 408 module must be replaced with a 408 module). If the replacement module is not the same, the MERLIN II system will restart when you exit the procedure.

Follow the procedures outlined below to replace a module or modules while the system is powered and in use. Any deviation from these procedures may cause the system to restart, with the loss of all active calls as a result.

To designate a station port from which to reset modules (called the “controller” station port), follow these steps:

1At the MERLIN II System Display Console, enter administration mode by sliding the T/P switch to P.

2Touch Conference twice.

The administration menu appears.

3Touch [More], [Options], [More], [More], [ModSwap] .

designate a controller station port. The default station port is station 19.

NOTE: Do not select a basic telephone port.

4There can be only one controller station port at any given time. If the Auto Intercom button you select does not light and you hear a beep when you touch the

button, another station port is currently designated. Find the Auto Intercom- button of the station showing a steady green light. Touch the Auto Intercom button to

On-Line Module Swap 4-7

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AT&T 518-600-016 manual On-Line Module Swap, Touch Conference twice