A method, system and apparatus for transmitting remote procedure call (RPC) commands are disclosed so that all terminals can be managed by using a protocol or specification in a converged network. The method includes: setting RPC commands in device management (DM) specification information; and transmitting the DM specification information. The system includes: a first device, adapted to: set RPC commands in the DM specification information, and send the DM specification information to a second device; and the second device, adapted to receive the DM specification information from the first device. The apparatus includes a terminal device and a DM server.