[Serusers] Multiplexing RTP streams

Hi All I was wondering if any thought (effort) has been given to trying to combine multiple rtp streams that are going to the same destination to save on IP overhead from the many small packets. I guess this would be a use case for RTPProxy (or mediaproxy) or it could be implemented as an application infront of rtpproxy. I know a number of vendors of hardware gateways (quintum/mediatrix) do this, and report massive savings (50% if memory serves) of bandwidth. I doubt very much that they use an open standard, which means that integrating with these devices is impractical. To me it seems that this would be a very useful ability, especially when you are sending all your calls to a single remote gateway. The remote gatway would have to have similar software to de-multiplex the traffic on the other side, but if you had control of both ends of an expensive link, this would be very useful. Noel