On Avaya J100 Series IP Phones, the value of SNTPSRVR parameter can be a comma-separated list of SNTP server addresses, which can be IPv4 or IPv6 addresses. This parameter has following default values:
0.avaya.pool.ntp.org,1.avaya.pool.ntp.org,2.avaya.pool.ntp.org, 3.avaya.pool.ntp.org
If these servers are not reachable, you can configure the phone with an alternate list of SNTP servers. Set the SNTPSRVR parameter value in the 46xxsettings.txt file to ntpserver-1,ntpserver-1,ntp-server-2. The parameter provides IP address or Fully Qualified Domain Name (FQDN) of the required NTP servers. Specify the correct SNTPSRVR to prevent any delay caused by the phone waiting for NTP server timeouts.
Note:
The phone can obtain the date and time from an NTP server. If you do not configure an NTP server or if the phone cannot access the NTP server, the phone uses a SIP server. In CCMS mode in the IP Office environment, if the phone connects to a SIP server to obtain the date and time values and displays the incorrect values, the SIP server might have the incorrect date and time configuration.