@jay-stallworth said in ISDN or Cable Internet for VOIP:
Hello Ronnie and Daniel,
I just watched CompTIA Network + episode about WAN technologies. It was very good and very informative. I did have one question. I think it was Ronnie who said that IT Pro TV had a ISDN line and was using it for the VOIP for there offices. What I would like to know is this, is ISDN the only solution for VOIP for a office environment?, or could you use WAN technologies like Cable Internet, or frame relay, or even optical fiber as google fiber. Google fiber is coming to the Atlanta area and I would like to know if that would be a suitable WAN technology to use for VOIP on a large scale, i.e. ( Large office with 200+ employees, or a School system of 187 schools with 14,000 employees, or a city government like the city of Atlanta) or would ISDN or Cable internet be a better solution for VOIP?
Our situation in a SMB environment is that we have really just a single connection to the internet and not multiple redundant connections. We wanted a solution that even if our only internet connection were to drop that our phone system was still up and available for the VoIP solution. So because voice only really requires 64Kbps for each connection we got an PRI ISDN that allowed us to have 24 or 25 simultaneous connections over that line from a different provider. So that if our ISP went down that our business side phones would be operational to handle support tickets and business while the live streaming side went down.
In a larger situation, you'd scale up the technology base. You can put all your solution together in one technology but that's the same as all your eggs in one basket. If your business is ok with the phones being out while the cable internet solution is also out then it may not matter but if you're like us and we can't answer phones or do business while our's is out, then we're out of business, then separate solutions may be the way to go. You'll need a scalable solution and also a larger budget than we had when we were first starting up. So either of your solutions will work for you and probably better and more cost effective than our ISDN solution.