pause is desired, more than one comma may be entered
,consecutively, with each one causing a two second pause. You also have the option of changing the length of the pause of the comma, from two seconds to any other value from 0 up to 255 seconds. This is accomplished by accessing 
  | Each comma used in a dialing command does count as one of the forty allowed characters.  | |
Returning to | A semicolon (;), when entered as the last character of a dialing  | |
Command  | command, will cause the command modem to return to the  | |
Mode | Command mode immediately after executing the command,  | |
After Dial | instead of waiting for a carrier signal and going on line.  | |
Command | 
  | 
  | 
Execution | For example, entering ATDT5551212; would simply   | |
afterwards except go back into  | ; Command mode. This can be useful in dialing applications where command  | |
modem data transfer is not desired, such as voice communications.  | ||
Escape | It is possible to cause the command modem to enter the com-  | |
Sequences- | mand mode after the command modem has gone   | |
Entering | without disconnecting the call. This is accomplished by entering  | |
Command  | an Escape code. The default Escape code is three plus  | |
Mode While | signs (+++). You need not hit Return.The Escape code character  | |
Still  | may be changed by accessing   | |
+++There is a safety factor built into the command modem, that requires about one second of silent time before and after the Escape code +++ is entered, to prevent accidental escapes into the Command mode. The command modem will not release the telephone line until it receives an ATH or ATZ command, or it detects loss of carrier.