3G video calls: barrier lifted.(ITU)

Telecom Standards Newsletter, September, 2006

A new standard that speeds up video calls on 3G devices has been published by ITUT. The new standard, Annex K of Recommendation H.324, also known as media-oriented negotiation acceleration (MONA), addresses the problem of long setup 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...

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