0049-2702-XXX Alliance Series Modems – USER MANUAL
08/05/2010
Rev. A
Page 118 of 197
mode to command mode). A value greater than 127 will disable escape sequence detection and
prevent you from going into Hayes online command mode.
S3 – Carriage return
The value in register S3 defines the ASCII character used to terminate a
command sequence. The value normally used is 13 (decimal), the standard ASCII carriage
return value.
S4 – Line feed
Register S4 (effective for asynchronous operation only) defines the line feed
character. The line feed character follows the carriage return only if word result codes have
been selected (command
V1
). Line feed can be changed to a null but cannot be totally disabled.
S5 – Backspace
The value in S5 (effective for asynchronous operation only) defines the
backspace character.
S6 – Blind dialing wait time
The value in S6 determines how long the ALX will wait after
going off-hook before it begins to dial. The minimum wait time is 2 seconds, even if S6 is set to
a value less than 2. If the
X2
and
X4
command is in effect, dial tone detection will be enabled
and blind dialing will be disabled, meaning that the value in S6 will have no effect. (See also
W
command.)
S7 – Carrier/dial tone wait time
This register controls the time the ALX will wait for carrier
after a call is established. It also controls the time the ALX will wait for dial tone if the
W
modifier is included in a dial string – or the wait time for silence if the @ modifier is used.
Note:
For V.32bis connections, register S7 should not be set to less than 20 seconds.
S8 – Pause time
Register S8 specifies the pause time that results when a comma is included in
a dial string or other command line.
Note:
An S8 value of less than 3 (0, 1 or 2) will yield a
pause time of 2 seconds.
S9 – Carrier detect response time
Register S9 determines how long a carrier tone must be
present for the modem to recognize the tone and indicate carrier detect (CD). (The time required
for the
absence
of a carrier tone to be recognized is fixed at 0.5 second.)
S10 – Loss of carrier delay
The value in register S10 determines how long the delay will be
from the occurrence of a loss of carrier until the ALX hangs up the telephone line. A value of
255 disables the modem’s carrier disconnect option – and line current disconnect option –
meaning that the ALX will
not
hang up in the absence of carrier or line current.
S11 – Tones
This register sets the off/on duration of tones used for dialing. The duration and
spacing of tones can be extended by increasing the value of S11. This register has no effect on
pulse dialing, which is fixed at 10 pulses per second.
S12 – Guard time
The value in register S12 (effective for asynchronous operation only)
specifies the escape guard time delay. This delay is required immediately before and after
entering the escape sequence; therefore, the three escape sequence characters must be entered
