Which component ensures media streams are properly terminated when bridging calls between different networks?

• A. Softswitch
• B. CM Server
• C. Call Router
• D. MTP

Answer: (D)

When bridging calls across networks with differing media capabilities, the party that ensures the actual voice path is properly handled must terminate and adapt the media streams. The Media Termination Point does exactly that: it sits in the media path, receives the RTP from one side, and can transcoding between codecs, adjust payload formats, and re-originates the media toward the other side. It also handles related processing like comfort noise, DTMF relay, and appropriate jitter management. By terminating and re‑originating the streams, it ensures compatibility and clean audio across networks such as SIP trunks to the PSTN or between different codec families. Other components focus on signaling and call control, while the MTP handles the actual media interworking, which is why it’s the component that guarantees proper termination of media streams when bridging networks.