IP Station Configuration - Pulse mode
From Zenitel Wiki
When an IP intercom station is to be used in a Pulse system, the only setting required is that the station is in "Pulse mode". "Pulse mode" is the default mode. If not sure, resetting the station to Factory Defaults will set it to this mode.
When the station is connected to the same network as the Pulse Server station, the station will automatically be discovered by the Pulse Server, and further configuration (including IP settings) are done on the Pulse Server, which will push the settings to the station.
See here on How to set up a Pulse System.