Permanent Audio Stream
From Zenitel Wiki
Permanent Audio Stream (PAS) is a feature in Zenitel Devices enabling transmission of RTP audio streams outside a call. Devices can be configured to permanently transmit up to two RTP streams (configurable). The RTP audio will be sent to a given IP address/port with configured codec.
The configuration page for PAS is not available from the web interface of the device. To access the PAS Settings use the following url: <ipaddress>/goform/zForm_stream_config
It is possible to configure the PAS to transmit RTP audio only during a call.
It is also possible to make only calls created using specified DAKs enable the stream in SIP mode.
Tools like VS-Recorder 2.0 can be used to record the actual RTP audio.