Hi thanks for your answer when i try this command - make a call from the fs_cli and park it: originate gsmopen/RR/+6281313888001 &park() - make a call from the fs_cli and make sound test: originate gsmopen/RR/+6281313888001 &echo() i receive the call to my cell phone. but when i answer there is no sound to my server. and for this instruction - I can see from your logs that on incoming calls you use: bridge(user/${user_data(${destination_number}@${domain_name} attr id)}@${domain_name}) - which later is translated to: EXECUTE gsmopen/gsm01 bridge(user/@192.168.1.3) - basically the variable 'user_data' isn't set, which causes the problems on incoming calls sorry sir i don't know how to configure or setting this instruction. what i try to make is i can call to my cell phone from x-lite and i can received a call from cell phone to my x-lite. sorry again i really newbie. i just setting inbound route and outbound route from fusionpbx and i dont know how to set expression input. may you can help me with example xml file and where directory i must put in thank you very much