[asterisk-users] check if call is from chan_sip or chan_pjsip

[marek]

hi,

i need check sip headers of incoming calls

i have hybrid configuration with chan_sip and chan_pjsip enabled

so i need check if incoming call is through chan_sip or chan_pjsip 
because i cant use i.e. ${PJSIP_HEADER(read,something)} on chan_sip

is there some function/application/variable?

thanks

Marek