AT&T MERLIN LEGEND Release 3.0 Programming Summary Manual page 436

Programming Special Characters
MLX Non-Display Telephone
Some dialing sequences need special characters. For example, you would
press Hold to insert a pause in a dialing sequence after a dial-out code to
allow the system to seize an outside line before dialing the number. A
pause can also be used to separate a phone number from an extension
number.
Table H-3. Special Characters for MLX Non-Display Telephone
Press... Means...
Drop Stop. Halts the dialing sequence to allow the system to
respond.
Hold Pause. Inserts 1.5 second pause in the dialing sequence.
Multiple consecutive pauses are allowed.
Flash. Sends a switchhook flash. Must be the first entry in
Conf
the dialing sequence.
End of Dialing for Extension Programming only. Used at
##
the end of a dialing sequence to indicate you have
finished dialing or to separate one group of dialed digits
from another, for example, account codes from number
dialed.
# End of Dialing. Used to signal the end of the dialing
sequence or to separate group digits, for example,
account code from number dialed.
H-4 Programming Summary