Time synchronization

Last Updated : Apr 17, 2026 |
Prolog information
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The phone synchronizes its time with the NTP servers on the network. The phone connects to the following NTP servers by default:
  • 0.avaya.pool.ntp.org
  • 1.avaya.pool.ntp.org
  • 2.avaya.pool.ntp.org
  • 3.avaya.pool.ntp.org
You can optionally configure the NTP server address through one of the following sources:
  • DHCP Option 42
  • DHCP Site-specific Option Number (SSON)
  • Provisioning server
  • Web UI
The phone synchronizes its time at a configured interval and upon each bootup. Configure the SNTP_SYNC_INTERVAL parameter to define the synchronization interval.
Note:
You can use the Avaya Aura SIP REGISTER connection as a time source. NTP has a higher priority over Avaya Aura SIP REGISTER.
Related information
General security features