Ringing Tones

System 25 signals you with four distinctive rings. The rings and their descriptions are listed below.

INSIDE CALL llllllllllllllllllll (one long ring)

Your call is from a person inside your company.

OUTSIDE CALL llllll llllll (two short rings)

Your call is from someone outside your company.

ABBREVIATED ALERT lll (one short burst of ringing)

This can indicate a call on another line; a busy-to-idle reminder; a manual signal; or that your telephone is in program mode.

PRIORITY RING ll ll llllllllllllll (two short rings and one long ring) You are being alerted that your request for Callback can now be completed; or a call is being set up remotely for your phone via a data feature known as Third-Party Call Setup.

Lights

A steady red light indicates the line you should use when you lift the handset.

A steady green light indicates the line or feature in use.

A slow blinking green light indicates an incoming call.

A fast blinking green light indicates a call on hold or a queued call. (An intermittent blinking green light indicates a call held temporarily while being transferred or conference.)

On the Selector Console, a steady red light indicates that a telephone is in use, or a call is parked on this extension.

On the Selector Console, a blinking red light indicates an extension that is calling you, or an unanswered call is returning to you from that extension.

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AT&T System 25 manual Ringing Tones, Lights