COMSPHERE 3800Plus Modems
5-6 October 1998 3980-A2-GB30-40
Table 5-1Valid Dial Command Modifier
Dial Command modifiers are parameters entered in the dial command string which specify how, when, and what number
to dial. The following is a list of parameters the 3800
Plus
modems recognize:
T – Tone (DTMF) dial. Any digit 0–9, *, #, A, B, C, or D can be dialed as tone.
P – Pulse dial. Only the digits 0–9 can be dialed in Pulse Dial mode.
, – Pause. Causes the modem to pause before processing the next character in the dial string. The length of this
pause is determined by the setting of the Pause Time configuration option (see Line Dialer configuration option
group) or by value held in S-Register S8.
W or + – Wait for dial tone. Modem waits for a second dial tone before processing the dial string. This can be the initial
dial tone or can be used when dialing through a tandem PBX. For example, 9W 555-6789.
R – Reverse Dial mode. Causes the originating modem to send out an answertone once it no longer detects ringback.
(Ringback is the ring you hear at the originating site when making a call.) The R parameter must be the last
character in the dial string.
@ – Quiet answer. Wait for five seconds of silence after dialing the number. If the silence is not detected, the modem
sends the NO ANSWER result code to the DTE or displays the No Quiet Answer LCD status message.
! – Hook flash. This causes the modem to go on-hook for 0.5 seconds then return to off-hook.
; – Return to Command mode. Modem returns to Command mode after dialing a number without disconnecting the
call. This permits you to enter long international telephone numbers, or additional information such as a calling card
number, that would exceed the 40-character limit.
Space, –, and ( ). These characters are ignored by the dial string and can be included to enhance readability.
z – End of Number. Hides all characters appearing on the LCD entered to the right of this indicator.