I have 8 FXO ports lines out of which port 4,5,6,7 is connected to Telos VX I have port 4 and 5 connected to first Studio on Telos VX and I have set port 6 and port 7 for second studio on Telos VX. which is having two extensions Ext 116 and Ext 117. When I dial in my Inbound routes routes my call to correct Extension pass through Telos VX and rings to Extension. but when I call from 116 Extension it uses DAHDI channel 4 insted of 6. How can I force DAHDI channel 6 to use when dialling out from Extension 116?