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PCA21EM

PHILIPS CONSUMER ELECTRONICS, CO.

PCA21EM

Card Type

Fax, Modem (synchronous/asynchronous)

Chip Set

Unidentified

Maximum Data Rate

28.8Kbps

Maximum Fax Rate

14.4Kbps

Data Bus

External

Fax Class

Class I & II

Data Modulation Protocol

Bell 103/212

ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.32terbo, V.34

Fax Modulation Protocol

ITU-T V.17, V.21CH2, V.27ter, V.29

Error Correction/Compression

MNP5, V.42, V.42bis

CONNECTIONS

Function

Label

Function

Label

Line in

CN1

RS-232/422

CN3

Line out

CN2

DC power

CN4

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

MR

Red

On

Power is on

MR

Red

Off

Power is off

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

EC

Red

On

Error correction activated

EC

Red

Off

Error correction disabled

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, ‘Comma’, A/

A, E, M, O, P, S, T, V, X, Y, Z

&C, &D, &F, &G, &K, &P, &S, &T, &V, &W, &X, &Y, &Z

Extended AT Commands

\A, \B, \C, \G, \J, \N, \Q, \V, \X, %A, %C, %E

S Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S25, S26, S27, S91

Note: See MHI Help file for full command documentation.

Proprietary AT Command Set

AUTO-MODE DETECTION

Type:

Configuration

Format:

AT [cmds] Nn [cmds]

Description:

Selects automatic detection and negotiation of line speed during the handshake process

Command

Function

N0

Auto-mode disabled, handshake speed designated by AT%B command.

í N1

Auto-mode enabled, handshake speed designated by AT%B command and DTE speed.

AUTO-RELIABLE FALLBACK CHARACTER

Type:

Register

Format:

AT [cmds] S29=n [cmds]

Default:

0

Range:

0-127

Unit:

ASCII

Description:

Sets the character used as the auto-reliable fallback character; S29=0 will disable this function.

BIT MAPPED REGISTERS

Register

Default

S14

137

S15

83

S17

75

S19

3

S20

0

S21

48

S22

246

S23

12

S24

72

S28

16

BREAK TYPE

Type:

Configuration

Format:

AT [cmds] \Kn [cmds]

Default:

5

Range:

0-5

Unit:

N/A

Description:

Configures action of break signal

BAUD RATE

Type:

Configuration

Format:

AT [cmds] %Nn [cmds]

Description:

Select which type of baud signals will be used

Note:

For External models only.

Command

Function

í %N0

IBM PC DTE baud rate enabled

%N1

NEC PC98 DTE baud rate set 1 enabled

%N2

NEC PC98 DTE baud rate set 2 enabled

COMMAND MODE FROM DUMB/POWER-ON LEASED-LINE MODE

Type:

Configuration

Format:

AT*** <ENTER> (within 8 seconds after hard-reset)

Description:

Returns the modem to command mode from dumb mode or power-on leased-line operation, you must turn the modem off then on again first.

Note:

To permanently turn off dumb mode or power-on leased-line mode, change the stored profile by issuing one of these strings: for dumb mode, AT%D0&W&W1. For power-on leased-line mode, AT&L0&W&W1

For External models only.

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Mn [cmds]

Description:

Selects communications mode

Note:

AT&M1-3 is for external models only.

Command

Mode

í &M0

Asynchronous mode

&M1

Synchronous connect mode and asynchronous off-line command mode.

&M2

Synchronous connect mode and asynchronous off-line command mode and set DTR high.

&M3

Synchronous connect mode

COMMUNICATIONS MODE

Type:

Configuration

Format:

AT [cmds] &Qn [cmds]

Description:

Selects communications mode options

Note:

AT&Q1-3 is for external models only.

Command

Mode

í &Q0

Asynchronous mode, serial port speed follows connect speed.

&Q1

Asynchronous off-line command mode and synchronous connect mode.

&Q2

Asynchronous off-line command mode - modem autodials first number in directory, then synchronous connect mode.

&Q3

Asynchronous off-line command mode on low DTR, synchronous connect mode on high DTR.

COMMUNICATION PROTOCOLS

Type:

Configuration

Format:

AT [cmds] Bn [cmds]

Description:

Selects the communication protocol for data calls

Note:

The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols.

Command

Protocol

B0

ITU-T V.22 at 300 or 1200bps

í B1

Bell 212A at 300 or 1200bps

B2

V.23 at 1200bps while AT%B1200 is set. (Answer mode: TX1200/RX75bps. Originate mode: TX75/RX1200bps.)

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials telephone number according to any modifiers included in the string

Note:

Any combination of modifiers can be used to produce the desired dial functions in sequence.

Modifier

Function

P

Pulse dialing enabled

R

Answer mode enabled, originate mode disabled following handshake initiation

S=n

Dial stored telephone number n

T

Tone dialing enabled

W

Dialing resumed following dial tone detection

,

Dialing paused for amount of time specified in S8 register

@

Wait for 5 seconds of silence

!

Modem commanded to go off-hook for specified time before returning on-hook

;

Modem returned to command state after dialing

^

Calling tone enabled for this call

DCE LINE SPEED

Type:

Configuration

Format

AT [cmds] %Bn [cmds]

Description:

Sets the maximum allowable data exchange rate after handshake process.

Command

Function

%B300

300bps

%B1200

1200bps

%B2400

2400bps

%B4800

4800bps

%B7200

7200bps

%B9600

9600bps

%B12000

12.0Kbps

%B14400

14.4Kbps

í %B28800

28.8Kbps

DUMB MODE

Type:

Configuration

Format:

AT [cmds] %Dn [cmds]

Description:

Controls which mode the modem will operate in

Note:

For External models only.

Command

Function

í %D0

Smart mode enabled

%D1

Dumb mode enabled

HOOK CONTROL

Type:

Immediate

Format:

AT [cmds] Hn [cmds]

Description:

Selects whether the modem is on-hook or off-hook

Command

Function

H0

Modem commanded to go on-hook (hang-up)

H1

Modem commanded to go off-hook (make busy), disabled in Germany.

INACTIVITY TIMER

Type:

Configuration

Format:

AT [cmds] \Tn [cmds]

Default:

0, Denmark 1, France 2

Range:

0-90

Unit:

1 minute

Description:

Sets the length of time that the modem does not receive information before it disconnects.

INACTIVITY TIMER

Type:

Register

Format

AT [cmds] S30=n [cmds]

Default:

0

Range:

0-90

Unit:

1 second

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.

LINE SIGNAL QUALITY/ LINE SIGNAL LEVEL

Type:

Immediate

Format:

AT [cmds] %Q [cmds]

Description:

Returns a value which indicates line signal quality (average EQM value) and received line signal level (in -dBm)

LINE TYPE

Type:

Configuration

Format:

AT [cmds] &Ln [cmds]

Description:

Selects line type

Note:

AT&L2 is for external models only.

Command

Line Type

í &L0

Switched line (PSTN/Dial-up)

&L1

Manual Leased-line mode, issue this command after the modems are connected: AT&L1D originating modem and AT&L1A answering modem.

&L2

Power-on (Auto) Leased-line mode, issue this command after the modems are connected and power is turned on: ATS0=0&L2 originating modem and ATS0=1&L2 answering modem.

MODULATION SELECTION

Type:

Configuration

Format:

AT [cmds] \Mn [cmds]

Description:

Selects which modulation will be used for a connection

Command

Function

\M0

Both V.34 and V.32terbo modulation enabled

\M1

V.34 modulation only enabled

\M2

V.32terbo modulation only enabled

REPORT INFORMATION

Type:

Immediate

Format:

AT [cmds] In [cmds]

Description:

Displays information requested

Command

Function

I0

Reports product code

I1

Reports ROM checksum

I2

Tests and reports ROM checksum

I3

Reports model ID & firmware ID

I5

Reports country code

RESULT CODES

Type:

Configuration

Format:

AT [cmds] Qn [cmds]

Description:

Enables modem to send result codes to the DTE

Command

Function

í Q0

Result code sending enabled

Q1

Result code sending disabled

Q2

‘RING’ result code disabled; ‘CONNECT’ and ‘NO CARRIER" result codes disabled in answer mode.

RTS/CTS

Type:

Configuration

Format:

AT [cmds] &Rn [cmds]

Description:

Selects RTS/CTS options

Note:

For External models only.

Command

Function

í &R0

CTS follows RTS in synchronous mode

&R1

CTS forced high in synchronous mode

SLEEP TIMER

Type:

Register

Format

AT [cmds] S13=n [cmds]

Default:

6

Range:

0-255

Unit:

1 second

Description:

Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

SPEAKER VOLUME

Type:

Configuration

Format:

AT [cmds] Ln [cmds]

Description:

Controls speaker volume

Command

Function

L0

Low volume setting

L1

Low volume setting

í L2

Medium volume setting

L3

Highest volume setting