Telemetry Messages

Telemetry is a data message that is sent between nodes when connecting to or disconnecting from another node. Telemetry is silently sent to all other connected nodes through digital (out-of-band, non-audio) data over the VoIP connection. It is purely up to each local system to decide what to do with this information. It can announce it, ignore it or even change the message. The node owner/admin determines what is appropriate for their individual node.

There are configuration and mode options allowing all telemetry (both local and obtained from other nodes) to be:

• Always announced
• Never announced
• Announced only when a function is locally executed and for short time thereafter

There are five telemetry channels which can be managed:

• Local Node - This node
• Foreign Node - A connected node
• Phone - Autopatch, Phone Portal
• Echolink - Echolink connections
• GUI - IAXRpt, SIP phone display, VoIP clients

Telemetry Options

The telemetry options are set in rpt.conf.

The relevant options are:

• telemdefault=
• telemdynamic=
• eannmode=
• echolinkdefault=
• echolinkdynamic=
• phonelinkdefault=
• phonelinkdynamic=
• guilinkdefault=
• guilinkdynamic=

Associated COP Commands

Local Telemetry COP Commands

The cop that affect local telemetry are:

• cop,33 Local Telemetry Output Enable
• cop,34 Local Telemetry Output Disable
• cop,35 Local Telemetry Output Timed

The cop commands override any of the telemdefault, echolinkdefault, phonelinkdefault, and guilinkdefault settings (all together), if any of their associated "dynamic" options are set to 1.

For example, if you have telemdynamic=0, then issuing one of the cop commands will not change the setting of telemdefault from what it is currently set to.

Foreign Telemetry COP Commands

Foreign telemetry is what is announced on the local node when a remote node connects. The cop that affect foreign telemetry are:

• cop,36 Foreign Link Local Output Path Enable
• cop,37 Foreign Link Local Output Path Disable
• cop,38 Foreign Link Local Output Path Follows Local Telemetry Selection
• cop,39 Foreign Link Local Output Path Timed

There are no rpt.conf settings that control foreign telemetry, it has to be controlled via cop command.

EchoLink Announcement COP Commands

The following cop commands allow you to override the eannmode option:

• cop,42 Announce node number only (eannmode=1)
• cop,43 Announce callsign only (eannmode=2)
• cop,44 Announce node number and callsign (eannmode=3)