How to set an argument in extensions.conf?

Question

Asterisk

There are some macros:

; ARG1 - EXTEN
; ARG2 - LINEOUTMTS LINEOUTKS LINEOUTLIFE???
exten => s,1,NoOp(-- Start out roundrobin gateway --)
    same => n,Set(CHANNEL(hangup_handler_push)=sub-after_hangup,cdr_set,1) ; store DID number on CDR
    same => n,Set(MAX_VALUE=${FIELDQTY(${ARG2},\,)})
    same => n,Set(GO_COUNT=0)

Please help me to deal with the variables ARG1, ARG2.
Where do they come from, can they be set manually, or just changed?

Answer 1

Taken and set at the macro call point