User's Manual

S6 – Waiting Time for Dial Tone
The value of the S6 Register determines when the modem will begin to dial
after “going off-hook” (or after recognizing the W parameter in Dialing
command mode). The X command controls the effect of the S6 Register. For
X0, X1 or X3, the modem waits for the specified period, even if the dial tone
occurs earlier. You can enter any value between 0 and 255 sec in this
Register; however, the modem will always remain in the allowed range.
Range: 3–6 seconds; factory setting: 3 sec
S7 – Waiting for Carrier Signal
Where the extended mode commands X3 or X4 are active (X3 is the factory
setting), the modem waits in Originate mode until the “Free” character is
recognized (the other connection is being called). The value of the S7 Register
determines the duration of the waiting period. In addition, the value of the S7
Register also determines how long the modem will wait for a carrier signal
from the remote modem, before it “hangs up”. Since the modem also waits for
a carrier signal, if it does not recognize a “Free” tone, the total waiting time can
be twice as long as the value set in the S7 Register.
When answering, the Register value represents only the waiting time for
carrier-tone recognition, since the “Free” character is of no importance here.
Further, the value of the S7 Register determines the waiting time for a
subsequent dialing tone (with no affect on the waiting time after the modem
has “lifted the handset”), where the W parameter is in Dial command mode.
The subsequent dialing tone is used in telephone systems, where a number is
dialed beforehand to call the exchange.
Range: 0-255 sec; factory setting: 60 sec
S8 – Pause Time after Comma
If a comma is included in the Dial command, the modem will pause when dialing, when it
reaches this character. The length of this pause is determined by S8.
Range: 0-10 sec; factory setting: 2 sec
S9 – Answer Time after Carrier Recognition
The period of time, during which the carrier from the remote station must be
present, before the modem goes on-line. A higher value decreases the risk of
an incorrect interpretation.
Range: 1-255 1/10 sec; factory setting: 6 (0.6 s)
S10 – Delay between Carrier Loss and Hanging Up
The period of time, during which the modem waits after carrier loss, before it
“hangs up”. This allows for a temporary loss of the carrier. The value must be
greater than the value of the S9 Register, so that the modem does not “hang
up” before recognizing the carrier.
Range: 1-99 1/10 sec; factory setting: 14 (1.4 s)
S-REGISTERS 4-3