Aastra 9143i Series Administrator's Manual page 249

Network Time Servers
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.
Configuring NTP Servers (optional)
Use the following procedure to enable/disable and configure the NTP servers
using the configuration files.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section,
Settings" on page A-52.
Use the following procedure to enable/disable the NTP server using the IP Phone
UI.
IP Phone UI
Step Action
1 Press on the phone to enter the Options List.
2 Select Preferences.
3 Select Time and Date.
4 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.)
41-001160-03, Rev 00, Releaes 2.4
Configuring Network and Session Initiation Protocol (SIP) Features
Note: The IP phones support NTP version 1.
Network Settings
"Time Server
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