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Card Type

Modem (asynchronous)

Chip Set

Unidentified

Maximum Data Rate

300bps

Data Bus

Internal/Toshiba bus

Data Modulation Protocol

ITU-T V.21

CONNECTIONS

Function

Label

Function

Label

RS-232-C

CN1

Ribbon cable to connecting board

CN4

Line out

CN2

Connection to computer

CN5

Ribbon cable to connecting board

CN3

Grounding screw

R1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í DTR normal

JP2

Pins 1 & 2 closed

DTR forced high

JP2

Pins 2 & 3 closed

í CD signal normal

JP3

Pins 1 & 2 closed

CD signal forced high

JP3

Pins 2 & 3 closed

í Bell 103/212A select

JP4

Pins 1 & 2 closed

IUT-T V.21 select

JP4

Pins 2 & 3 closed

COMMUNICATION

Setting

SW1

Off

Position 0

RS-232-C

Position 1

Modem

Position 2

SUPPORTED COMMAND SET

Basic AT Commands

AT, �+++�, �Comma�, A/

A, C, D, E, F, H, M, O, P, Q, S, T, V, Z

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12

Note: Please see MHI Help file for full command documentation.

BIT-MAPPED REGISTER S13

Format:

AT [cmds] S13=n [cmds]

Default:

Unidentified

Range:

0-220

Description:

Controls parity, buffer overflow flag, and data bits.

Bit

Value

Function

1, 0

0

Not used

2

1

Parity enabled

3

1

Even parity

4

1

8 data bits

5

0

Not used

6

1

Buffer overflow flag enabled, ERROR result code sent

7

1

8th data bit set to space when bit 4 value is 1

8th data bit set to mark when bit 4 value is 1

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

Unidentified

Range:

0-238

Description:

Controls echo, result codes, pulse/tone dialing, and speaker control

Bit

Value

Function

0

0

Not used

1

1

Local echo enabled

2

1

Result codes disabled

3

1

Verbose result codes

4

0

Not used

5

1

Tone dialing

6

1

Speaker on until carrier detected

7

1

Speaker always on

BIT-MAPPED REGISTER S15

Format:

AT [cmds] S15=n [cmds]

Default:

Unidentified

Range:

0-110

Description:

Controls DCE speed, answer/originate mode, duplex and carrier signal

Bit

Value

Function

1, 0

10

300bps

2

1

Originate mode enabled

3

1

Full-duplex enabled

5, 4

10

300bps

6

1

Carrier enabled

BIT-MAPPED REGISTER S17

Format:

AT [cmds] S17=n [cmds]

Default:

Unidentified

Range:

0-125

Description:

Controls hook status, auto-answer, speaker, low speed, ring indicator, and carrier

Bit

Value

Function

0

1

Off hook

1

0

Not used

2

1

Auto-answer disabled

3

1

Speaker enabled

4

1

Low speed enabled

5

1

Ring indicator false

6

1

Carrier not present

COMMAND MODE

Type:

Immediate

Format:

AT [cmds] ; (semicolon) [cmds]

Description:

Return the modem to command mode after dialing

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product code

I1

Reports checksum

I2

Tests and reports ROM checksum

REVERSE MODE

Type:

Immediate

Format:

AT [cmds] R

Description:

Places the modem in answer mode for remote modems that are originate only

SELECT CALL PROGRESS RESULT CODES

Type:

Configuration

Format:

AT [cmds] Xn [cmds]

Description:

Enables selection of result code format options

Command

Function

X0

Result codes 0 - 7 enabled, result code 5 not used.

Note: Hayes extended result code set not used