NEC Dterm DTP 16D-1 Corded Phone "changing date dterm80 phone" Questions

...dterm80 phone? It keeps getting slower and slower...Thanks! Press the "Speaker" button and enter 728 on the key pad. Then enter the correct time in 24 hour format. For example at 2.56 p.m. type 1456. ...

...date on a NEC Dterm80 phone. Feature 9#hold didn't work for me. I normally use the Speaker - 728 - to change the time. Feature 9# has to be done fromt he Admin phone. Somewhere on the system there is ...

Changing the date is a little more difficult than changing the time.  On many systems, the system date must be changed by the telecom folks who can program the Elite IPK unit.  But, there is