Elastix Vs GXW410X PSTN Gateway 4 line configuration

i am using elastix pbx and gxw410x pstn gateway. i have 4 land line connection.
i configured trunk for first two lines and it goes to IVR . and its working fine.

when i try to add another two lines to pstn and try to configure trunk to seperate ivr or direct extention its not working.

To make the 2 other lines to go to a different destination, you have to configure the Unconditional Forward on the GXW4104 for those 2 lines to go to that different destination, so you have 2 lines going to one destination, and the other 2 lines going to another destination.