I've never got it working but this is how I imagine it working.
Let's say your MUD has an intermud chat setup installed.
Upon boot, your MUD will reach out to some sort of 'hub' which keeps track of the MUDs which subscribe and have a compatible setup installed. I suppose this is updated however often is appropriate.
Then this list is stored on your MUD somehow, presumably similar to the 'who' screen. Maybe something like
Code:
ID Host) Name
---- ----------------- ---------------------
1) mercthievia.com [Medievia]
2) 4dimensions.org [4 Dimensions]
3) tbamud.com [The Builder Academy]
4) ad.codewarp.org [Augmented Dimension]
Then a user (with the appropriate privilege) can lookup these MUDS whenever he or she wishes, and type something like
and see something like
Code:
Immortals
---------
[32 Cl] Kyle thats a healthy weight for a baby
[34 Th] Opie 's baby is here! 3.770kgs, 52cms, born 26th April at 19:43 (CET) (AFK)
2 characters displayed.
and then type something like
Code:
interchat 3 hey hows TBA tonight?
intertell 3 kyle hey hows your zone coming?
Is this more or less how it is supposed to behave?