RE: H.323 Gatekeeper
- From: "Chris Dinis" <chris.dinis@xxxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 13 Mar 2003 13:00:02 -0000
Hi Pai
H.323 Gatekeeper works together with the H.323 protocol filter to
provide full communications capabilities to H.323-registered clients
using applications that are compliant with H.323 Gatekeeper, such as
NetMeeting 3.0 or later, or video, audio, T120 data, and application
sharing over the internet.
It shouldn't affect your yahoo/msn messenger services if you stop it.
Here is an example that I got from Microsoft Help File.
From within your company:
You place a call from your office to someone@xxxxxxxxxxxxx using
NetMeeting 3.0.
NetMeeting 3.0 connects with your in-house H.323 Gatekeeper.
The H.323 Gatekeeper does not recognize microsoft.com as an internal
address and forwards the call to the ISA Server computer within your
company.
ISA Server looks up the address for microsoft.com and makes the query
over the Internet to microsoft.com.
At the destination:
When the ISA Server computer at microsoft.com receives the query for
someone@xxxxxxxxxxxxx, it contacts the internal H.323 Gatekeeper at
microsoft.com to obtain the correct in-house address.
The H.323 Gatekeeper at microsoft.com translates the alias into a
network address for ISA Server.
The ISA Server sends a confirmation back to ISA Server at your company
and establishes the connection.
From this point through the end of the communication, the ISA Server
holds open the link established by H.323 Gatekeeper.
Someone is not required to have a valid, externally routable IP address,
and the address will remain hidden from other endpoints by the ISA
Server.
Regards
Chris Dinis
Technical Director
Aztec IT Ltd
139 Croxley View
WD18 6PE
www.aztecit.co.uk
-----Original Message-----
From: jagadish.pai@xxxxxxxxxxxxxxxxxxx
[mailto:jagadish.pai@xxxxxxxxxxxxxxxxxxx]
Sent: 13 March 2003 05:51
To: [ISAserver.org Discussion List]
Subject: [isalist] H.323 Gatekeeper
http://www.ISAserver.org
Hi
Do we really need this h.323 gatekeeper
I have stopped the h.323 gateway services in isa server.
What is the benefit if i start the services, and how it is useful.
Will this effect in yahoo/msn messenger services if the services are
stopped.
Regards
Pai
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