Predefined Channel Variables

Hi all,

Can anyone tell me what is will be predefined variables for the following target.

1- CalledNumber
2- Call Stop DatTime

I will be appricaite if any one can help me.

voip-info.org/wiki/view/asterisk+variables has a list.

dialed number would be ${EXTEN} or ${DNID}. Dunno about call end time. Maybe work it out by adding start time + duration?