Caller context

[kerberos]

is there a way of getting the context of the caller extension?
e.g

[contextA ]
exten =>89,1,answer()
exten =>89,2,AGI_dial_out.php ; this program will dial out thru context B
exten =>89,3,Hangup()

[context B]
exten => 1NXXNXXXXXX,1,Dial(sipprovider)
exten => 1NXXNXXXXXX,2,Hangup

i would like to get the context of caller, as in when call from context A arrives to context B.
is there a way out? coz as far as i know the predefined variable ${CONTEXT} will give the current context = context B as soon as the calls arrive at context B.

i know this is possible in AGI(get the context of caller)
but i believe its very annoying to make a script just to get the caller context.

[valley]

If you can’t live without AGI_dial_out.php, you can pass a variable to the AGI, then pass it back to context B.