osmocombb and usrp

Hello, I have a ursp1 working fine and I want to use my c123 to conenct to it with osmocombb. Now I face some problems. First of all I have no sim, so I do: sim testcard 1 001 01 The usrp runs a testnetwork (001 01) I don't know how I can associate with the usrp. I tried: network search (lot of output and also my testnet) network show (nothing happens) network select 1 001 01: Network not in list! Any idea what I'm doing wrong? Would be really Cool if i could use opensource only. With best regards, Paul