how-to block ads
|
acoustix
join:2004-01-30
Fort Dodge, IA
| reply to drslash
Re: [Phone] Confused
said by drslash  :I don't think that is an accurate description either. From what I understand the call from the home goes over Mediacom's network to the head end and is then connected to the service provider (Sprint?). The call does not hit the open internet anywhere on the path and is not considered VOIP. VoIP is not limited to a specific type of network or Internet as you put it. VoIP is not a specific protocol, but a rather a generalized description of "Voice over Internet Protocol". There are many protocols that can be used like SCCP and SIP. It can be over a LAN, WAN, Internet, or whatever, but VoIP does not have to hit the "open Internet". I know because I manage a Cisco CallManager system.
Your understanding of Mediacom's voice network is accurate and it is most definitely a VoIP system. | |
BAINCH
Premium,VIP
join:2003-04-02
Middletown, NY
edit:
May 2nd, @10:23AM
| said by acoustix :said by drslash :I don't think that is an accurate description either. From what I understand the call from the home goes over Mediacom's network to the head end and is then connected to the service provider (Sprint?). The call does not hit the open internet anywhere on the path and is not considered VOIP. VoIP is not limited to a specific type of network or Internet as you put it. VoIP is not a specific protocol, but a rather a generalized description of "Voice over Internet Protocol". There are many protocols that can be used like SCCP and SIP. It can be over a LAN, WAN, Internet, or whatever, but VoIP does not have to hit the "open Internet". I know because I manage a Cisco CallManager system. Your understanding of Mediacom's voice network is accurate and it is most definitely a VoIP system. I wouldn't advise anyone to claim Mediacom wasn't VoIP, but that term has taken on meanings by many users (and reporters) that have confused the issue. So for those who are interested:
Mediacom Phone uses an ITU protocol called MGCP, which is tranmitted in IP between the customer premise and the gateway controllers (part of the switch.) We support dynamic QOS to guarantee bandwidth during all calls to prevent other traffic (primarily HSD traffic from the same customer's home) from affecting call quality. The traffic is separated at the headend and travels a route-diverse fiber ring back to our partner Sprint. The voice traffic never traverses the Internet nor any "public" network of any kind. The voice traffic does travel with HSD traffic (logically separated) from the home to our headend. From there on it travels on physically-separated networks until it terminates at the PSTN. We also use our own circuits into every rate center and 911 center. We build 100% into LOCAL 911, never relying on regional or failover centers. We also provision full E911 in all areas where the local 911 center supports it. We use the universally-accepted G711 codec (another ITU spec) which supports virtually any voice, fax or data communication. We have tested with and are approved for use with many top security companies including ADT (we are what they reference on their website as a Qualified "Managed Facility Voice Network" or MFVN.) We also deploy all our eMTAs with 8hr battery backup.
In contrast, what many people "think of" as VOIP is the Vonage or Skype products. That is based on SIP, has no QOS or route diversity and always travels on public networks (most notably the Internet.) They also have a somewhat sketchy record for 911 support and are not recommended for many uses including security. | |
|
