Aastra Telecom SIP 57I - Manual (Page 168)

Network Settings
4-44 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Configuring the IP Phones
3 Enter an IP address or qualified domain name in the "Time Server 1", "Time Server 2", and/or
"Time Server 3" field(s) to specify the location of the NTP time server.
4 Click to save your changes.
Aastra Web UI
Step Action