Protocols This topic has 0 replies, 1 voice, and was last updated 20 years, 9 months ago by Benjamin. Viewing 1 post (of 1 total) Author Posts 5th March 2004 at 16:10 #26630 BenjaminGuest when useing a VoIP system what are the important protocols that have to be considered? i.e. Transmission protocol is TCP/IP. Author Posts Viewing 1 post (of 1 total) The forum ‘Voice over IP’ is closed to new topics and replies.