TMN is object-oriented; TL1 is not
TMN Entities are more granular than TL1 entities
In TL1, one object represents an OC3 termination
In TMN there are three objects - one for each SDH layer
optTTP
rsTTP
msTTP
Error Handling is at a Higher Level
TMN has no "Are you sure?" prompts as in TL1
Purely a Machine-to-Machine Interface
CMIP requests are much more complex than TL1 requests.
Encoding and Decoding are required