MOVE ALONG NOTHING TO SEE HERE
All new docs are being written in the github msndevs wiki
The old contents are left here for historical reference
old contents
According to MSNPiki, MSNP12 introduced the concept of "contact types" or "network IDs"
These are hardcoded numbers that look like bitmasks, but probably aren't - the ones that aren't powers of two are combinations that make no sense.
MSNP14?
This one is copied from MSNPiki, which doesn't specify what version it applies to - I'm guessing it corresponds to MSNP14 due to the yahoo support:
1Windows Live2Office Communicator4Telephone8MNI (Mobile Network Interop, used by Vodafone)16SMTP (Jaguire, Japanese mobile interop)32Yahoo
MSNP22
Added 13, "Connect", no idea what it is.
1Windows Live2Office Communicator4Telephone8"Mobile Network" (see MNI above)13"Connect"? (1|4|8)16SMTP32Yahoo
MSNP24
Replaced 8 with skype. Added 19 and 20, no idea either.
1Windows Live2Office Communicator4Telephone8Skype13"Connect"?16SMTP19"Temporary Group"? (1|2|16)20"Short Circuit"? (4|16)