# Dial String Sequences

In order to program and modify call transfer call flows, you must enter specific dial strings in the Transfer Sequence Properties section of the Configuration page. The following table lists the different dial strings that you can use:

Character | Definition
0 - 9 * # | Standard touch tone keys pressed by caller
( ... ) | Digits entered between the brackets must be pulsed (10 pulses per second)
+ | Pause for one second
A - D | Fourth-column DTMF keys on special telephones
E | Go off-hook (i.e. lift the handset or press Speaker), wait for a dial or stead tone (e.g. pager go-ahead or confirmation tone), then do the next item in the dial string
G | Greet the caller, then wait for a voice or auto answer
H | Hang up
N | Start a new activity without going off-hook
O | Ring once
P | Go off-hook, and wait for dial tone
S | Switch hook flash, without having to wait
V | Voice pager - play the first un-played message