(n) (comp) routing message
(n) (comp) forwarded IP-message indication
(n) (comp) stored message auto-forward
MS
(n) (comp) delivered-message entry
(n) (comp) replying IP-message indication
(n) (comp) keep alive message
(n) (comp) message security labelling
(n) (comp) instant messaging
IM
(n) instant messenger
IM
(n) (comp) message handling service
(n) (comp) Message Handling System
MHS
(n) (comp) unified messaging
(n) (comp) multi-block message transmission
(n) (comp) (obsc) interpersonal messaging service
(n) (comp) public message handling service
(n) (comp) Interface Message Processor
IMP