Status Registers

Bit Mapped

S21

 

 

 

 

 

 

 

Comman

 

Bit

Value

d

Description

 

 

 

 

6, 0

00

&S

DSR forced on

 

10

&S1

DSR on when online

 

01

&S2

DSR off 5 seconds after disconnect

 

11

&S3

DSR follows off hook (OH)

 

 

 

 

5, 1

00

&C

DCD always on

 

10

&C1

DCD on while carrier present

 

01

&C2

DCD on except for 5 seconds after

 

 

 

disconnect

 

11

&C3

DCD follows RTS on remote modem; not

 

 

 

valid in reliable mode

 

 

 

 

2

0

&R

CTS follows RTS by S26 delay

 

1

&R1

CTS always on

 

 

 

 

4, 3

00

&D

Modem ignores DTR

 

01

&D1

Modem assumes command mode when

 

 

 

DTR turns off

 

10

&D2

Modem hangs up when DTR turns off

 

11

&D3

Modem resets when DTR turns off

 

 

 

 

7

0

Y

Long space disconnect disabled

 

1

Y1

Long space disconnect enabled

 

 

 

 

Modem 3600

10-9

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Image 153
Black Box 3600 MODEM manual Bit Mapped S21, Comman Bit Value Description