OPNET Implementation of Megaco/H.248 Protocol
نویسندگان
چکیده
The best-known media gateway control protocols are currently Media Gateway Control Protocol (MGCP) and Megaco/H.248. MGCP, described as informational RFC 2705, has been widely deployed. Megaco/H.248 has evolved from MGCP. It is a single unified protocol that resulted from the cooperation between the Internet Engineering Task Force (IETF) and the International Telecommunication Union (ITU). Megaco/H.248 is expected to win wide industry acceptance as the official standard. In this paper, we describe OPNET implementation of Megaco/H.248. Our simulation scenario employs one Media Gateway Control (MGC) and two Media Gateways (MGs) connected to a local hub by point-to-point duplex links. We have implemented five Megaco/H.248 commands in order to simulate three basic call flows and demonstrate Megaco/H.248 functionality. Data traffic between two MGs is simulated using the Real-Time Transport Protocol (RTP). We describe the OPNET implementation details of the three basic call flows: Successful MG Registration Procedure, Successful Call Setup Procedure, and Successful Call Release Procedure. We also present simulation results and discuss possible future enhancements of our implementation.
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