Overview

IP Phone Models

Inline power support (based on 802.3af standard) which eliminates power adapters.

AC power adapter (included)

Enhanced busy lamp fields*

Set paging*

*Availability of feature dependant on your phone system or service provider.

 

57i and 57i CT Key Descriptions*

Keys

Key Description

 

Goodbye key - Ends an active call. The Goodbye key also exits an open list, such

 

as the Options List, without saving changes.

 

Options key - Accesses options to customize your phone. Your System

 

Administrator may have already customized some of your settings. Check with your

 

System Administrator before changing the administrator-only options.

 

Hold key - Places an active call on hold. To retrieve a held call, press the call

 

appearance button beside the light that is flashing.

 

Redial key - Redials up to 100 previously dialed numbers. Pressing the Redial key

 

twice simultaneously redials the last dialed number.

 

Volume control key - Adjusts the volume for the handset, headset, ringer, and

 

handsfree speaker.

 

Line/Call Appearance key - Connects you to a line or call. The Aastra 57i IP phone

 

supports up to 4 line keys.

Overview

41-001160-00, Release 2.1, Rev 04

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Aastra Telecom 53I, 57I CT, 55I manual 57i and 57i CT Key Descriptions