APPENDIX C. S REGISTERS

S6 *

Wait time for blind dialling (Range :2-255)

Default : 2

 

Sets the length of time in seconds to pause after the modem goes off-

 

hook and before the modem dials the first digit of the telephone number.

 

The modem always pauses for a minimum of 2 seconds even if the S6

 

register is set to a value less than 2 seconds. The "wait for dial tone" call

 

progress feature (W in the dial string) will override the value in register

 

S6. If option ATX2 or ATX4 is in effect, this register is ignored.

S7 *

Wait for carrier after dial (Range :1-255)

Default : 50

 

Defines two delay times in seconds:

 

 

1.

During call establishment, this register establishes the time that the

 

 

local modem waits for carrier from the remote modem before

 

 

hanging up.

 

 

2.

Sets the length of time that the modem waits when the "wait for dial

 

 

tone" call progress feature (W in the dial string) is in effect.

S8 *

Pause time for dial delay

Default : 2

 

Sets the length of time in seconds to pause when the modem encounters

 

the "pause during dial" call progress feature, i.e., the comma.

S9 *

Carrier detect response time (Range :1-255)

Default : 6

 

Determines the duration in tenth of asecond which a carrier signal must

 

be present before the modem recognizes it as a carrier. As this time is

 

increased, there is less chance to detect a false carrier due to noise from

 

the telephone line.

 

S10 *

Lost carrier to hang up delay (Range:1-255)

Default : 14

 

Sets the length of time in tenth of a second which the modem waits

 

before hanging up after a loss of carrier. This allows for a temporary

 

carrier lost without causing the local modem to disconnect. When

 

register S10 is set to 255, the modem functions as if a carrier is always

 

present.

 

 

The actual interval the modem waits before disconnecting is the value

 

in register S10 minus the value in register S9. Therefore, the S10 value

 

must be greater than the S9 value or else the modem disconnects before

 

it recognizes the carrier.

 

S11 *

DTMF tone duration (Range :50-255)

Default : 95

 

Sets the duration in millisecond of tones in DTMF (Dual Tone Multi

 

Frequency) dialling. This value has no effect on pulse dialling.

S12 *

Escape code guard time

Default : 50

 

Sets the time delay in fiftieth of a second required immediately before

 

and after entering the escape code. The time interval between the

 

sending of the first and second, or the second and third escape code

 

characters must be less than the value of the guard time.

 

S13

Reserved

 

ACTIVE Professional External Modem User’s Manual

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