Aastra Telecom SIP 57I - Manual (Page 255)

Operational Features
41-001160-00, Release 2.1, Rev 04 5-45
Configuring Operational Features
Operational IP Phone Features
.
Aastra Web UI
1 Click on Basic Settings-> Preferences->General.
2 The "Call Waiting" field is enabled by default. To disable this field, uncheck the box. This feature
allows you to enable or disable the call waiting feature on the IP phone.
3 The "Play Call Waiting Tone" field is enabled by default. To disable this field, uncheck the box. This
feature allows you to enable or disable the call waiting tone on the IP phone.
Note: The Call Waiting Tone feature works only if the “Call Waiting” tone field is enabled.
4 Click to save your changes.