Which H.245 information is exchanged within H.225 messages in H.323 Fast Connect?

A.
Terminal Capability Set

B.
Open Logical Channel

C.
Master-Slave Determination

D.
Call Setup

E.
Call Progress

Explanation:
With the standard H.245 negotiation, the two endpoints need three round-trips
before they agree on the parameters of the audio/video channels (1. master/slave voting, 2.
terminal capability set exchange, and finally, 3. opening the logical channels). In certain situations
and especially with high-latency network links, this can last too long and users will notice the
delay.