video conferencing by ip
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Lkadlik
5 pts.
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Q:
video conferencing by ip
H.323, Video conferencing
When you are using ip and h.323 to place a video call from one company to another over the public internet do you need to convert the call back to voice or is it ip all the way through?
ASKED: Oct 6 2008  3:22 PM GMT
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Labnuke99
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It is IP all the way through.
Last Answered: Oct 6 2008  3:25 PM GMT by Labnuke99   26245 pts.
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Techy001   225 pts.  |   Feb 10 2009  11:26AM GMT

Yes, as Labnuke99 said, it is IP all the way through. I would like to provide few more info on the same.

H.323 is one of the VoIP protocol which is based on packet-IP network. So, whatever packet comes it will be flowing through IP (internet).

H.323 uses additional protocols called H.225 and H.245. H.225 is used for call signaling i.e. initial call setup/ringing/connection (here in video conferencing - finding the neighbor contact and make a connection). Once the connection is done the H.245 control signal protocol shares the media details about the audio/video codec details and starts the video/voice flow using RTP (Real-Time transport protocol). So there is no need of any converters in between.

Thanks!!!

 
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