standard that speeds up video calls on 3G devices has been published by ITU-T.
The new standard, Annex K of Recommendation H.324, also known as media oriented
negotiation acceleration (MONA) addresses the problem of long set up times for
video calls that many perceive as stalling consumer acceptance. H.324 is used
in 3G networks to exchange real-time and bi-directional video traffic
Without the new technique a typical video session required each end to send up
to ten messages to the other terminal, each time waiting for a message to be
received and acknowledged before sending the next one. And, if a message was
not received, the sending device had to wait and finally time out before
retransmitting. This could introduce delays of up to eight seconds according to
MONA follows in the footsteps of another ITU-T standard – reported here
– WNSRP (described in Annex A/H.324), which was a first step towards addressing
the problem. WNSRP cut delays down to three seconds, while the techniques
deployed in MONA will reduce that to one second or less.