Hi, I have added the line in mod_commands.c file and compiled the file by make and make install After that i have tested the barging. i get the same error *api originate sofia/internal/1000%172.20.176.31 &bridge(sofia/default/ 9841799874@172.20.176.254)* Content-Type: api/response Content-Length: 41 +OK e4591865-a652-4f47-a5f0-d3cb01116441 *api originate sofia/internal/1002%172.20.176.31&eavesdrop(e4591865-a652-4f47-a5f0-d3cb01116441) * Content-Type: api/response Content-Length: 41 +OK 738003e0-e90c-4816-9375-1a239b8d82a2 *api uuid_send_dtmf 738003e0-e90c-4816-9375-1a239b8d82a2 3 to* Content-Type: api/response Content-Length: 14 -ERR no reply *api uuid_send_dtmf 738003e0-e90c-4816-9375-1a239b8d82a2 3 from* Content-Type: api/response Content-Length: 14 -ERR no reply *api uuid_send_dtmf 738003e0-e90c-4816-9375-1a239b8d82a2 3 both* Content-Type: api/response Content-Length: 14 -ERR no reply i Have attached the mod_commands.c file in this mail. can to correct me where i am wrong -- Warm Regards, N.Baskar