-----Original Message-----
Hi Ray,
If I have Windows Messenger on my computer and my friend
has MSN Messenger, can we still communicate online?
Is it a must that Windows Messenger only "talk" to
Windows Messenger?
no. All people that want to communicate through instant
messaging have to use the same instant messaging service
(or instant messaging protocol).
For Windows and MSN Messenger this service is called
..NET Messenger Service. All what you need is a .NET
Passport account (
http://www.passport.com/), but you
can use both Windows Messenger and MSN Messenger.
There are 3rd party clients around that also support the .NET
Messenger Service protocol (and mostly AOL, ICQ and others,
too).
But if you want to communicate through Exchange Instant
Messaging Service (RVP protocol) or Office Live Communications
Server (LCS), you have to use Windows Messenger,
since this is the only product supporting this protocols at the time.
The SIP/SIMPLE/RTP protocols that are used by LCS are industry
standard protocols and can be implemented by any other client,
too. But until now I don't know of any other client application supporting
those protocols and NTLM/Kerberos authentication.
Regards
--
Thomas Wenzl [MVP for Outlook]
Share what you know, learn what you don't!
(Deja/Google)
.