Aastra Telecom 57I C53I, C53I The following paragraphs describe each of these features.

Operational Features

41-001160-00, Rev 01 Release 2.0 5-5

Operational IP Phone Features

The following paragraphs describe each of these features.

Priority Alerting Allows you to enable or disable priority alert settings. Priority

alerting allows incoming calls to trigger pre-defined ringing or

call waiting alert tones. Also allows you to set Sylantro-only

settings for priority alerting.

Stuttered Dial Tone Allows you to enable or disable the playing of a stuttered dial

tone when there is a message waiting on the IP phone.

Call Waiting Tone Allows you to enable or disable the playing of a call waiting

tone when a caller is on an active call and a new call comes

into the phone.

Language Allows you to set the language to display on the IP phone UI

and the Aastra Web UI. For the 53i, 55i, and 57i , valid

languages are English (default), French, Spanish, German,

and Italian. For the 57i CT, valid languages are English

(default), French, and Spanish.

Feature Description