[asterisk-users] Set Call Codec in extension.conf

[Faraj Khasib]

Hi All,
I am trying to set call codec at extension.conf but it doesnt work ... its like my command doesnt change anything


exten=6500,1,Answer
exten=6500,2,Playback(welcome)
exten=6500,3,SIPAddHeader(email:${SIP_HEADER(email)})
exten=6500,4,MixMonitor(${STRFTIME(${EPOCH},GMT-6,%C%y-%m-%d//%C%y-%m-%d_%H:%M:%S_%A)}_${SIP_HEADER(email)}.wav,b)
exten=6500,5,set(SIP_CODEC=gsm) -- this is not changed ....
exten=6500,6,Queue(${EXTEN})

can any body help me with that?