2 TRX on a sector ( no frequency hopping)
Repeater installed. The repeater is configured with only the BCCH frequency.
If the call is generated from the repeater and it gets a TCH allocation from the BCCH TRX, then the allocation is successful.
If the TCH allocation is from the 2nd TRX, then the allocation fails.
How do you make only one TRX dedicated for the Repeater?
What is the vendor of your repeater? But, though, i’ve never seen a repeater which can support only one channel… Even the cheapest allgons have two-channels… But answer to your question: you can’t do it by tuning your cell (in common)
I think you should try to solve this problem from the other side:
1\ try to reconfigure your repeater or
2\ find another cell to link repeater (with one tre) – but i wouldn’t advise to do it…