Aastra Telecom SIP 57I - Manual (Page 167)

Network Settings
41-001160-00, Release 2.1, Rev 04 4-43
Configuring Network and Session Initiation Protocol (SIP) Features
Configuring the IP Phones
Use the following procedure to enable/disable and configure the NTP Servers
using the Aastra Web UI.
8 Enter the IP Address (in dotted decimal) or qualified domain name for the Time Server.
9 Press Done to save the change.
Aastra Web UI
Step Action
1 Click on Advanced Settings->Network->Advanced Network Settings.
2 Enable the "NTP Time Servers" field by checking the check box.
(Disable this field by unchecking the box). Default is disabled.
IP Phone UI
Step Action