Port 2126 - pktcable-cops, what is this port for?

[sandman887]

I saw this on a list of assigned and registered ports, and I was curious about it, so I googled it and looked for it on wikipedia, and all I have found are more lists with this 2126 tcp/udp port, and all they say is that it is for pktcable-cops.

I am curious what this "service" is for. I googled packet cable, and I found a patent describing a way to filter unwanted traffic, and it showed diagrams of networks, but it didn't say what this protocol or service is. It sounds similar to a firewall, but I don't think it qualifies as one.

I am surprised there is very little information that I was able to find on the internet about this service. Surely, some people know about it. Has anybody here seen this before?

[gmargo]

I noticed probably related ports 2246 and 3918 also:

pktcable-cops   2126/tcp   PktCable-COPS
pc-mta-addrmap  2246/tcp   PacketCable MTA Addr Map
pktcablemmcops  3918/tcp   PacketCableMultimediaCOPS

The latter googled me into thinking it has to do with VoIP and Multimedia delivery over cable systems.

http://en.wikipedia.org/wiki/PacketCable
http://www.cablelabs.com/packetcable/primer/index.html


Update: See this page and search for "port 2126":
http://what-when-how.com/voip-protoc...oip-protocols/