Aastra Telecom 57I User Manual

Network Settings

4-42

41-001160-00, Release 2.1, Rev 04  

IP Phone Administrator Guide

Network Time Protocol (NTP) is a protocol that the IP phone uses to synchronize 
the phone clock time with a computer (configuration server) in the network.
To use NTP, you must enable it using the configuration files or the Aastra Web UI. 
You can specify up to three time servers in your network.

Use the following procedure to enable/disable and configure the NTP servers 
using the configuration files.

Use the following procedure to enable/disable the NTP server using the IP Phone 
UI.

The IP phones support NTP version 1.

For specific parameters you can set in the configuration files, see Appendix A, the section, 

page A-31.

1

Press 

 on the phone to enter the Options List.

2

Select Preferences.

3

Select Time and Date.

Select Time Server.

5

Enter your Administrator password.
Note: The IP Phones accept numeric passwords only.

6

Select Timer Server 1, Timer Server 2, or Time Server 3.

Note: The Time Servers are disabled by default.

7

To set a Time Server, press Enable. (Press Disable to disable a Time Server.)