Channel variables

There are a number of build-in channel variables that can be used in the ACR Schema to affect the progress or settings for a call.

Variable	Description
state	Current channel state of the call
channel_name	Channel name
uuid	uuid of this channel’s call leg
read_codec	The read codec variable mean the source codec
read_rate	The source rate
write_codec	The destination codec same to write_codec if not transcoded
write_rate	Destination rate same to read rate if not transcoded
username
caller_id_name
caller_id_number
ani	ANI of caller, frequently the same as caller ID number
aniii	ANI II Digits (OLI - Originating Line Information), if available. Refer to: http://www.nanpa.com/number_resource_info/ani_ii_digits.html
network_addr	IP address of calling party
destination_number	Destination (dialed) number
rdnis	Redirected DNIS info
created_time
answered_time
privacy_hide_name
privacy_hide_number	This variable tells you if the inbound call is asking for CLIR[Calling Line ID presentation Restriction]
sip_h_p-key-flags	This will contain the optional P-Key-Flags header(s) that may be received from calling endpoint.
sip_h_referred-by