Stephen Sprunk;
I dare reply because your mail demonstrates common misunderstandings
by people outside of the Internet.
H.323 is defined for a LAN environment, not for telephone lines.
For telephony people, the IP protocol is for a LAN environment
that there is no difference between H.323, SIP, TELNET, or DNS
for that matter.
"Telephony people" are not relevant here, since we're talking about
VoIP.
Huh?
As I said:
For VoIP over telephony networks
Your statements don't make sense; "VoIP over telephony networks" is an
oxymoron, since VoIP is, by definition, over an IP network.
Some IP networks are pure telephony networks.
Only one IP network in the world is the Internet.
If you want to use ITU protocols, please choose some other numbers.
So, you are saying SGCP/MGCP are wrong to use 323.
Fine.
No, he's suggesting that if you wish to use an ITU protocol, H.323 is
not the correct one. Perhaps Q.931?
He is not saying anything meaningful.
MGCP/SGCP/Megaco directly use E.164 numbers. SIP allows users to see
The context is that Yixin said something about S/MGCP and 323 and
Chrisitian acknowledged. I know the relevance is meaningless.
FYI, in my design of "The Simple Internet Phone":
If you are interested in Internet telephony, see you at
INET'2000 in Yokohama for the presentation of our paper
"The Simple Internet Phone".
Please let us know the URL where you'll be publishing this paper, as
some of us may not be inclined to fly to Yokohama to hear about yet
another non-standard, proprietary telephony protocol.
You seem to have no knowledge on INET and IETF.
Signature of Vint will be a good starter for you.
Or, ask someone who knows something about not only IP networks but
also the Internet.
SIP is not, as you state, based on a strategy of building non-IP
networks and connecting them with non-IETF protocols; in fact, it's
quite the opposite. SIP allows the replacement of non-IP (ie. legacy
telephony) networks and non-IETF (ie. ITU) protocols; in the ideal SIP
world, legacy telephony would cease to exist.
We, IETF, are for the Internet, not merely IP.
Masataka Ohta