Result Variable shows which channel is using

[Guest Ada]

I would like to ask whether Result Variable can show which channel is using? I need to using it in log text file.

[SupportTeam]

From https://www.voiceguide.com/vghelp/source/html/resultvariables.htm :

$RV_PORT

Line Device's position is VoiceGuide's line status listing. Numbering starts from the top, with first line/port having a $RV_PORT of 1, the second line/port having a $RV_PORT of 2, etc.
 

$RV_LINEID

Identification number of the line device which is handling this call. The ID number refers to an internal line ID number - not the position in which that line's status is displayed in VoiceGuide's status window.