Hello dear colleagues! There are 3cx version of 15 to which are connected by sip trunk two PBX Yeastar U 100. The extension numbers 3cх begin with 1000-1099. The extension numbers of the first Yeastar U100 begin with 2000-2099. The extension numbers of the second Yeastar U100 begin with 3000-3099. When I make a call from 2000 to 1000 the call passes and there are no problems. when we make a call from 3000 to 1000 the call passes and there are no problems. But when I want to call 3000 since 2000, it does not work. My question is whether 3cx supports routing.