NEC Xen Topaz Features And Specifications Manual page 131

XEN Topaz NEC Business Solutions Ltd
1. Dial the extension number of the internal party.
2. Dial the single digit service code.
Instead of the single digit service code, the service code 810 can also be Dialled at this point.
To join a Conference Call via Privacy Release:
A. When invited to join Conference call, press the indicated Line Key.
Features and Specifications Manual Chapter 4 - 123