AT&T System 25 - Manual (Page 55)

Programming Numbers
You can program numbers into
buttons, and Personal Speed Dialing codes. While only extension
buttons (maximum of 28 characters) and Personal Speed Dialing
codes (maximum of 25 characters).
Special Characters
You may need to use the “*” and the “ #” when you program
numbers. The “*” is used as either a 1.5 second pause or as an
actual “*” character. The “ # “ may be used as an actual “ # “
character, at the beginning of end-to-end signaling, or at the
beginning of a Speed Dialing code.
NOTE: These special characters cannot be programmed into
buttons.
access code and the telephone.
You program: 9*5557023
This means:
9 (1.5 second pause) 555-7023
Using * as a Character
If you want to use the “*” as a character, you must place a “ # “
before the “*”.
For example, you may want to program the feature access code
"*70" into a button.
You program: # *70
This means: *70
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