TELEPHONE OPERATION

AT THE HANDSET

Handset Icons

Icon Description

Line in Use

On steadily with no number next to it when a parallel set is in use.

On steadily with one or more numbers next to it to show which extensions are using the line. For example, 12 indicates that Handset 1 and Handset 2 are on outside calls.

Intercom

On steadily with the extension numbers currently on an intercom call. For example, 02 indicates that the base and Handset 2 are currently on an intercom call.

Battery

Cycles (low, medium, and high) when Handset battery is charging.

Flashes when battery is low.

MMute

On steadily when the handset microphone is muted.

HHold

On steadily when the line is on hold.

RHandset Registration

On steadily when a handset is either not registered, or is searching for a base unit.

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Image 12
AT&T 2440 user manual Handset Icons