Exchange 2000 Chat Service is based on two protocols:
Note IRCX supports the use of unicode characters encoded in Universal Character Set (UCS) Transformation Format 8 (UTF-8). Because unicode provides an extended character set, users running an IRCX-compatible client can participate in chat sessions in any language.
IRCX also provides enhancements to standard IRC commands and several new commands for managing users and channels in a chat community.