10.25.2.9.1. Feature Description 
MCID includes the following variants:
- automatic recording of the calling party's data
- recording of nuisance callers: those are users who release the line before the connection is established. If a new incoming call is signalled at the called party and the call is released, the calling party is registered in the destination PBX.
- manual activation of MCID: in active call state and immediately after the release of the connection the called party can instigate registration in the destination PBX by either pressing the appropriate key or by dialling the corresponding code.