The oldest and most widely used VoIP protocol suite is ____.
A) H.323
B) H.264
C) SIP
D) Q.931

Question

The oldest and most widely used VoIP protocol suite is ____.
A) ​H.323
B) ​H.264
C) SIP
D) ​Q.931

Quizplus · Accepted Answer

H.323 is the oldest and most widely used protocol suite for VoIP. It was developed by ITU-T and is used for audio, video, and data conferencing over IP networks. SIP is also a popular VoIP protocol, but it was developed later than H.323. H.264 and Q.931 are not VoIP protocols, but rather video compression and ISDN signaling protocols, respectively.

The Oldest and Most Widely Used VoIP Protocol Suite Is