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 Wednesday, 13 September 2006

A new 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 experts.

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.