My htc 728 speaker not working - HTC Computers & Internet

Go to Settings/About/Software updates and select from options there.

Change the Time:
1. Press SPEAKER key, enter 728
2. Dial 2 digits for the hour (must be in 24 hour clock time)
3. Dial 2 digits for the minutes 4. Press SPEAKER
For more information go to this link
NEC PHONE SYSTEMS TIME AND DATE PROGRAMMING Inlinecom

To reset time NEC Dterm 80
Press speaker and enter 728 on keypad.
Then enter correct time in 24 hour format...Ex. 2:56 = 1456
Then press speaker again...
Note: On my system this changes time on all phones on the system

1. Press the Speaker key
2. Dial 728
3. Dial two digits for the hour (it's on a 24 hour clock so 13 would be 1 p.m.)
4. Dial two digits for the minutes (00-29)
5. Press speaker to hang up.

Hope this helps!

Feature 9# has to be done fromt he Admin phone. Somewhere on the system there is a phone that is the Admin phone.

Just reset your device and check

Press "Speaker"
Dial 728
Enter time in 24 hr format. (i.e. 2:50PM would be 1450)
Press "Speaker"

Press "Speaker"
Dial 728
Enter time in 24 hr format. (i.e. 2:50PM would be 1450)
Press "Speaker"

Press Speaker
Then 728
Then the time in "Military Time"
Then speaker again

I found the answer at www.digcom.com.

CLOCK/CALENDAR SETTING
Note: The date must be set in system programming (10-01).
To set the system Time:
1. Press the Speaker key.
2. Dial 728.
3. Dial two digits for the hour (24 hour clock, 13 = 1:00 PM).
4. Dial two digits for the minutes (00~59).
5. Press Speaker to hang up.