Maintenance Strategy

Warm Start

A loss of power for less than 250 ms can cause a warm start. If this occurs, calls in progress are not dropped, but calls in the process of being connected may be dropped.

Considerations

Power interruptions of less than 100 ms usually do not affect the system.

Warm starts may cause telephones without incoming calls to ring.

Cold Start (Restart)

If you need to restart the system, cold start (Restart) is recommended. Restart drops all calls but saves system programming.

To perform a cold start, select Restart as follows:

Console Procedure

Menu SysProgram Exit System-Restart

 

Yes

 

 

 

PC Procedure

(F6)

 

(F5)

(F1)

(F1)

(F2)

Considerations

A cold start (Restart) occurs automatically after a power interruption of more than one second.

A cold start (Restart) does not blank out the screen on an MLX-20L telephone until the cold start is completed.

A cold start (Restart) can cause extensions with the Extension Status feature to lose their toll restrictions.

For more information on the Restart procedure, see System

Programming.

For more information on Restart, see “Processor Problems” in Chapter 4.

Introduction 1-21

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AT&T 3.0 manual Warm Start, Cold Start Restart