Cable Forum - View Single Post - A Little Info For Anybody Considering Voip over NTL 1Mbps

philquinney · 22-02-2006, 22:21

At my old flat I was using Sipgate on NTL's old 300k service with a 64k upload. Sipgate support G.729 (I think) so you can get calls into about 30k of bandwidth each way once you factor in TCP overheads. By default most VOIP devices will use G.711u which does need 80-100k to work properly.

NTL Cable Internet and Sipgate was a really good solution in the end. It gave us really cheap international calls and fully itemised billing, plus caller ID. I was also using it in combination with my own Asterisk server so the flexibility was useful. It takes time to get it all working though.

Phil.

22-02-2006, 22:21	#9
philquinney Inactive Join Date: Feb 2004 Posts: 80	Re: A Little Info For Anybody Considering Voip over NTL 1Mbps At my old flat I was using Sipgate on NTL's old 300k service with a 64k upload. Sipgate support G.729 (I think) so you can get calls into about 30k of bandwidth each way once you factor in TCP overheads. By default most VOIP devices will use G.711u which does need 80-100k to work properly. NTL Cable Internet and Sipgate was a really good solution in the end. It gave us really cheap international calls and fully itemised billing, plus caller ID. I was also using it in combination with my own Asterisk server so the flexibility was useful. It takes time to get it all working though. Phil.