D S-Register Summary

Appendix D S-Register Summary

Register

Unit

Range

Default

Description

S0

1 ring

0, 1–255

1

 

Sets the number of rings until the modem

 

 

 

 

 

answers. ATS0=0 disables auto answer

 

 

 

 

 

completely.

S1

1 ring

0–255

0

 

Counts the rings that have occurred.

S2

decimal

0–127

43

(+)

Sets ASCII code for the escape code character.

S3

decimal

0–127

13

(^M)

Sets ASCII code for the RETURN character.

S4

decimal

0–127

10

(^J)

Sets ASCII code for the LINE FEED character.

S5

decimal

0–127

8 (^H)

Sets ASCII code for the BACKSPACE character.

S6

1 sec

2–255

2

 

Sets the time the modem will wait for a dial tone

 

 

4–255†

4†

 

before aborting a call.

 

 

4–7‡

4‡

 

 

S7

1 sec

1–255

45

 

Sets the time the modem will wait for a carrier

 

 

1–45*

45*

signal before aborting a call.

 

 

1–55‡

55‡

 

S8

1 sec

0–255

2

 

Sets the length of the pause caused by a comma

 

 

4–255†

4†

 

character in a dialing command.

 

 

4–7‡

4‡

 

 

S9

100 ms

1–255

6

 

Sets delay between when the modem detects a

 

 

 

 

 

valid carrier signal and when it turns on its CD

 

 

 

 

 

circuit.

S10

100 ms

1–254,

7

 

Sets how long a carrier signal must be lost before

 

 

255

 

 

the modem disconnects. S10=255 causes the

 

 

 

 

 

modem to not disconnect with loss of carrier.

S11

1 ms

1–255

70

 

Sets spacing and duration of dialing tones. 50

 

 

80–255*

80*

ms is the recommended minimum..

 

 

80–255‡

80‡

 

S13

decimal

0, 1–127

37

(%)

Sets ASCII code for remote configuration escape

 

 

 

 

 

character. S13=0 disables remote configuration.

S17

10 ms

1–255

25

 

Sets the length of the break time (space) sent to

 

 

 

 

 

the local PC when the modem receives a remote

 

 

 

 

 

break.

S24

50 ms

0–255

20

 

Sets the time the DSR, CTS, and CD signals

 

 

 

 

 

drop before going high again. Used for some

 

 

 

 

 

PBX and CBX phone systems.

S25

100 ms

0, 1–255

0

 

Sets the time the DTR signal must be dropped

 

 

 

 

 

before the modem disconnects. The 0 default

 

 

 

 

 

equals 50 ms.

S30

1 min.

0, 1–255

0

 

Sets how long the modem waits after the last

 

 

 

 

 

character is received or transmitted before it

 

 

 

 

 

disconnects. The 0 default disables the timer.

S32

100 ms

0–255

20

 

Sets the time the modem will wait for a RETURN

 

 

 

 

 

to be entered during escape sequence execution.

S34

1 char-

0–60

10

 

Sets the number of command characters allowed

 

acter

 

 

 

after +++AT.

S36

1 sec

0, 1-255

5

 

Sets the time between DTR inactive and modem

 

 

 

 

 

off-hook. S36=0 disables DTR busy-out.

S37

1 sec

0-255

5

 

Sets the time between DTR active and modem

 

 

 

 

 

on-hook.

CommPlete Communications Server

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Multi-Tech Systems MT3334HD8 manual Appendix D S-Register Summary, Register Unit Range Default Description