Q. Which protocol is primarily used to carry media (voice/video) in IMS?
a) SIP
b) MEGACO
c) Diameter
d) RTP
Check 🔎
Correct answer: Letter d.
In IMS (IP Multimedia Subsystem), RTP (Real-time Transport Protocol) is used to carry voice, video, and other media streams. SIP handles session control and signaling, but media transport happens over RTP.
Q. Which protocol is primarily used to carry media (voice/video) in IMS?
a) 
“SIP”
→ Incorrect. SIP handles signaling, not media transport.
b) “MEGACO”
→ Incorrect. MEGACO is used for media gateway control, not direct media transport.
c) “Diameter”
→ Incorrect. Diameter is used for authentication, authorization, and accounting (AAA).
d) 
“RTP”
→ Correct. RTP carries media streams like voice and video in IMS.
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