I-2APPENDIX I: S-REGISTERS

Register

Default

Function

 

 

 

S10

7

Sets the duration, in tenths of a second, that the Business

 

 

Modem waits after loss of carrier before hanging up. This

 

 

guard time allows the Business Modem to distinguish

 

 

between a line hit, or other disturbance that momentarily

 

 

breaks the connection, from a true disconnect (hanging up)

 

 

by the remote device

 

 

 

S11

70

Sets the duration and spacing, in milliseconds, of dialed

 

 

tones.

 

 

 

S12

50

Sets the duration, in fiftieths of a second, of the guard time

 

 

for the escape code (+++) sequence.

 

 

 

S13

0

Bit-mapped register. See Chapter 1, Using the AT

 

 

Command Set, for instructions about how to set

 

 

bit-mapped registers.

 

 

Bit

Value

Result

 

 

0

1

Reset when DTR drops.

 

 

1

2

Reverse normal Auto Answer

 

 

 

 

operation: On incoming RING, enter

 

 

 

 

Originate Mode and look for an

 

 

 

 

answer tone.

 

 

2

4

Disable 250 ms pause before result

 

 

 

 

code display.

 

 

3

8

On DTR signal, autodial the number

 

 

 

 

stored in NVRAM at position 0.

 

 

4

16

At power-on/reset, autodial number

 

 

 

 

stored in NVRAM at position 0.

 

 

5

32

Disable HST

 

 

6

64

Disable MNP Level 3 (used for testing

 

 

 

 

Level 2).

 

 

7

128

Hardware reset (works like powering

 

 

 

 

off and then on).

 

 

 

S14

1

Bit-mapped register. (See Chapter 1, Using the AT

 

 

Command Set, for instructions about how to set

 

 

bit-mapped registers.)

Bit

Value

Result

0

1

Disconnect on escape code.

1

2

Send result codes only when

 

 

originating a call.

Page 184
Image 184
3Com 56K Modem waits after loss of carrier before hanging up. This, Operation On incoming RING, enter, Disable HST, Level