NETCOMM LIMITED

CARDMODEM56 COMBO
Card Type Modem/Fax
Maximum Modem Rate 56KBPS
Data Modulation Protocol Bell 103, Bell 212A, V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, K56flex
Fax Modulation Protocol V.17, V.27ter, V.29
Error Correction/Compression MNP10, MNP2, MNP3, MNP4, MNP5, V.42, V.42bis
Maximum Fax Rate 14400BPS
Fax Class Class I
Data Bus PCMCIA Type II


55755

SUPPORTED COMMAND SET

Basic AT Commands

AT, ‘+++’, A/
A, B, E, H, M, O, Q, V, Y, Z
&C, &W, &Y, &Z

Extended AT Commands

\A, \G, \L, \V
%C, %L, %Q

S Registers

S18

Special Commands

-K, :E
Note: See MHI Help File for full command documentation.


Proprietary AT Command Set

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.

Command

Function
 

DL

 Re-dial last number
 

DP

 Pulse dialing enabled
 

D^

 Calling tones disabled.
 

DS=n

 Dial stored telephone number n
 

DJ

 MPN10 connection enabled
 

DW

 Dialing resumed following dial tone detection
 

D,

 Dialing paused for amount of time specified in S8 register
 

D!

 Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook.
 

D@

 Wait for Quiet Answer function enabled. Modem waits until a "quiet answer,".
 

DK

 Power level adjustment during MNP10 connections enabled
 

DT

 Tone dialing enabled
 

D;

 Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command.


REPORT INFORMATION
Type: Immediate
Format: AT [cmds] In [cmds]
Description: Displays information requested

Command

Function
 

I0

 Reports firmware identity code
 

I1

 Reports ROM checksum
 

I3

 Returns ROM and revision level
 

I4

 Reports data connection information
 

I9

 Reports manufacturer and model information


SPEAKER VOLUME
Type: Configuration
Format: AT [cmds] Ln [cmds]
Description: Controls speaker volume

Command

Function
 

L0

 Low volume setting
 

L1

 Low volume setting
»

L2

 Medium volume setting
 

L3

 Highest volume setting


AUTO-MODE DETECTION
Type: Configuration
Format: AT [cmds] Nn [cmds]
Description: Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed.

Command

Function
 

N0

 Auto-mode detection disabled
 

N1

 Auto-mode detection enabled


STATUS-REGISTER
Type: Configuration
Format: Selects: AT [cmds] Sn [cmds]
Read: AT [cmds] Sn=? [cmds]
Write: AT [cmds] Sn=(register value) [cmds]
Description: Selects a register.  Writes to or reads from a specified register
Note: See the section on S-registers for detailed listing of commonly used S-registers.


EXTENDED RESULT CODES
Type: Configuration
Format: AT [cmds] Wn [cmds]
Description: Line speed or terminal speed reporting from the modem when it connects with another modem.

Command

Function
 

W0

 Enables CONNECT result codes to report DTE speed.
 

W1

 Enables CONNECT result codes to report DTE speed, and PROTOCOL result codes.
 

W2

 Enables CONNECT result codes to report DCE speed.


SELECT CALL PROGRESS RESULT CODES
Type: Configuration
Format: AT [cmds] Xn [cmds]
Description: Enables selection of tone detection and associated result code format options

Command

Function
 

X0

 Busy and dial tone detection disabled; result codes 0 - 4, 8, 33, 35 & +F4 enabled.
 

X1

 Busy and dial tone detection disabled; result codes 0 - 5, 8 - 23, 33, 35 & +F4 enabled.
 

X2

 Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6, 8 - 23, 33, 35 & +F4 enabled.
 

X3

 Busy tone detection enabled, dial tone detection disabled; result codes 0 - 23, 33, 35 & +F4 enabled.
 

X4

 Display of all response codes enabled.


FACTORY DEFAULT PROFILE
Type: Configuration
Description: Sets values in active profile to values found in the default profile
Format: AT [cmds] &Fn [cmds]

Command

Function
 

&F0

 Restore defaults to factory profile 0
 

&F1

 Restore defaults to factory profile 1


GUARD TONE
Type: Configuration
Format: AT [cmds] &Gn [cmds]
Description: Commands the modem to transmit a guard tone in V.22/V.22bis
Note: Used primarily for international data transmission

Command

Function
 

&G0

 Guard tone disabled
 

&G1

 Reserved
 

&G2

 1800Hz guard tone enabled


FLOW CONTROL
Type: Configuration
Format: AT [cmds] &Kn [cmds]
Description: Enables flow control options

Command

Function
 

&K0

 Flow control disabled
 

&K3

 RTS/CTS flow control enabled
 

&K4

 XON/XOFF flow control enabled


COMMUNICATIONS MODE
Type: Configuration
Format: AT [cmds] &Qn [cmds]
Description: Selects communications mode options

Command

Mode
 

&Q0

 Asynchronous mode, serial port speed follows connect speed.
 

&Q1

 Reserved
 

&Q2

 Reserved
 

&Q4

 Reserved
 

&Q5

 Error correction mode


RTS/CTS
Type: Configuration
Format: AT [cmds] &Rn [cmds]
Description: Selects RTS/CTS options

Command

Function
 

&R0

 CTS follows RTS in data mode; CTS follows V25bis handshake.
 

&R1

 CTS forced high, CTS goes low if required by flow control.


DATA SET READY (DSR)
Type: Configuration
Format: AT [cmds] &Sn [cmds]
Description: Selects DSR options

Command

Function
 

&S0

 DSR forced high
 

&S1

 DSR high only while modem is handshaking or connected



CONFIGURATION PROFILES
Type: Immediate
Format: AT [cmds] &Vn [cmds]
Description: Displays active and stored configuration profiles

Command

Function
 

&V0

 Displays active and stored configuration profiles
 

&V1

 Displays last connection statistics


BREAK SEND
Type: Configuration
Format: AT [cmds] \Bn [cmds]
Default: 3
Range: 1-9
Unit: .1 second
Description: Sends break to modem


BREAK TYPE
Type: Configuration
Format: AT [cmds] \Kn [cmds]
Default: \K5
Range: 0 - 5
Description: Configures action of break signal


CONNECT MODE
Type: Configuration
Format: AT [cmds] \Nn [cmds]
Description: Controls the type of connection the modem will operate in

Command

Function
 

\N0

 Normal mode enabled
 

\N1

 Variable speed mode enabled
 

\N2

 V.42/MNP reliable mode enabled
 

\N3

 V.42/MNP auto-reliable mode enabled
 

\N4

 V.42 reliable mode enabled
 

\N5

 MNP reliable mode enabled


DISPLAY ACTIVE CONFIGURATION
Type: Immediate
Format: AT [cmds] \S [cmds]
Description: Display the current active configuration from the modem.


AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
Type: Configuration
Format: AT [cmds] %En [cmds]
Description: Controls auto-retrain mode and fallback/fall-forward

Command

Function
 

%E0

 Auto-retrain disabled
 

%E1

 Auto-retrain enabled
 

%E2

 Auto-fallback/fall-forward enabled
 

%E3

 Fast hang-up enabled


CALLING TONE
Type: Configuration
Format: AT [cmds] #Cn [cmds]
Description: Generates V.25 calling tones when oprating in originate mode

Command

Function
 

#C0

 Calling tone disabled
 

#C1

 Calling tone enabled by modifier "n"


MNP10 ENHANCED CELLULAR
Type: Configuration
Format: AT [cmds] -SEC=x,y [cmds]
Description: MNP10 is automatically enabled for V.34 modems only

Command

Function
»

x=0

 MNP10EC disabled
 

x=1

 MNP10EC enabled
 

y=10 - 30

 Transmission power in -dBm, Default = 10


MODULATION SELECTION
Type: Configuration
Format: AT [cmds] +MS=x,y,z,a,b,c,d [cmds]
Description: Sets options for active protocol; the transfer rates specified by z and a must be valid for the protocol selected.

Command

Function
 

x=0

 V.21
 

x=1

 V.22
 

x=2

 V.22bis
 

x=3

 V.23
 

x=9

 V.32
 

x=10

 V.32bis
 

x=11

 V.34
 

x=56

 K56flex
 

x=64

 Bell 103
 

x=69

 Bell 212A
 

y=0

 Automode disabled
 

y=1

 Auto-detect highest speed enabled
 

z, a=300

 Set minimum or maximum transfer rate at 300bps, respectively.
 

z, a=1200

 Set minimum or maximum transfer rate at 1200bps, respectively.
 

z, a=2400

 Set minimum or maximum transfer rate at 2400bps, respectively.
 

z, a=4800

 Set minimum or maximum transfer rate at 4800bps, respectively.
 

z, a=7200

 Set minimum or maximum transfer rate at 7200bps, respectively.
 

z, a=9600

 Set minimum or maximum transfer rate at 9600bps, respectively.
 

z, a=12000

 Set minimum or maximum transfer rate at 12000bps, respectively.
 

z, a=14400

 Set minimum or maximum transfer rate at 14400bps, respectively.
 

z, a=16800

 Set minimum or maximum transfer rate at 16800bps, respectively.
 

z, a=19200

 Set minimum or maximum transfer rate at 19200bps, respectively.
 

z, a=21600

 Set minimum or maximum transfer rate at 21600bps, respectively.
 

z, a=24000

 Set minimum or maximum transfer rate at 24000bps, respectively.
 

z, a=26400

 Set minimum or maximum transfer rate at 26400bps, respectively.
 

z, a=28800

 Set minimum or maximum transfer rate at 28800bps, respectively.
 

z, a=31200

 Set minimum or maximum transfer rate at 31200bps, respectively.
 

z, a=32000

 Set minimum or maximum transfer rate at 32000bps, respectively.
 

z, a=33600

 Set minimum or maximum transfer rate at 33600bps, respectively.
 

z, a=34000

 Set minimum or maximum transfer rate at 34000bps, respectively.
 

z, a=36000

 Set minimum or maximum transfer rate at 36000bps, respectively.
 

z, a=40000

 Set minimum or maximum transfer rate at 40000bps, respectively.
 

z, a=42000

 Set minimum or maximum transfer rate at 42000bps, respectively.
 

z, a=44000

 Set minimum or maximum transfer rate at 44000bps, respectively.
 

z, a=46000

 Set minimum or maximum transfer rate at 46000bps, respectively.
 

z, a=48000

 Set minimum or maximum transfer rate at 48000bps, respectively.
 

z, a=50000

 Set minimum or maximum transfer rate at 50000bps, respectively.
 

z, a=52000

 Set minimum or maximum transfer rate at 52000bps, respectively.
 

z, a=54000

 Set minimum or maximum transfer rate at 54000bps, respectively.
 

z, a=56000

 Set minimum or maximum transfer rate at 56000bps, respectively.
 

z, b=56000

 Set minimum or maximum transfer rate at 56000bps, respectively.
 

b=0

 Codec type µ-law enabled
 

b=1

 Codec type A-law enabled
 

c=0

 Rb-signaling disabled
 

c=1

 Rb-signaling enabled
 

d=300

 Set minimum or maximum transmit rate at 300bps, respectively.
 

d=1200

 Set minimum or maximum transmit rate at 1200bps, respectively.
 

d=2400

 Set minimum or maximum transmit rate at 2400bps, respectively.
 

d=4800

 Set minimum or maximum transmit rate at 4800bps, respectively.
 

d=7200

 Set minimum or maximum transmit rate at 7200bps, respectively.
 

d=9600

 Set minimum or maximum transmit rate at 9600bps, respectively.
 

d=12000

 Set minimum or maximum transmit rate at 12000bps, respectively.
 

d=14400

 Set minimum or maximum transmit rate at 14400bps, respectively.
 

d=16800

 Set minimum or maximum transmit rate at 16800bps, respectively.
 

d=19200

 Set minimum or maximum transmit rate at 19200bps, respectively.
 

d=21600

 Set minimum or maximum transmit rate at 21600bps, respectively.
 

d=24000

 Set minimum or maximum transmit rate at 24000bps, respectively.
 

d=26400

 Set minimum or maximum transmit rate at 26400bps, respectively.
 

d=28800

 Set minimum or maximum transmit rate at 28800bps, respectively.
 

d=31200

 Set minimum or maximum transmit rate at 31200bps, respectively.
 

d=32000

 Set minimum or maximum transmit rate at 32000bps, respectively.
 

d=33600

 Set minimum or maximum transmit rate at 33600bps, respectively.


REPORTING MODULATION SELECTION
Type: Immediate
Format: AT [cmds] +MS? [cmds]
Description: Report the options for active protocol selected.


ACTIVE PROTOCOLS SUPPORTED
Type: Immediate
Format: AT [cmds] +MS=? [cmds]
Description: Report the options for active protocol supported.


 

S(status) -REGISTERS

AUTO ANSWER RING COUNT
Type: Register
Format AT [cmds] S0=n [cmds]
Default: 2
Range: 0-255
Unit: 1 ring
Description: Sets the number of rings allowed before the modem automatically goes off-hook
Note: If S0=0, automatic-answering is disabled. The A command must be used to go off-hook.


RING COUNT
Type: Register
Format AT [cmds] S1=n [cmds]
Default: 0
Range: 0-255
Unit: 1 ring
Description: Counts the number of ring-cycles the modem receives
Note: S1 is reset to 0 if no ring is detected within an eight-second window.


ESCAPE CHARACTER
Type: Register
Format AT [cmds] S2=n [cmds]
Default: 43
Range: 0-255
Unit: ASCII
Description: Selects a character used for the escape sequence
Note: A value greater than 127 will disable the escape sequence.


CARRIAGE RETURN CHARACTER
Type: Register
Format AT [cmds] S3=n [cmds]
Default: 13
Range: 0-127
Unit: ASCII
Description: Selects a character used for carriage return <CR>


LINE FEED CHARACTER
Type: Register
Format AT [cmds] S4=n [cmds]
Default: 10
Range: 0-127
Unit: ASCII
Description: Selects a character used for line feed <LF>


BACKSPACE CHARACTER
Type: Register
Format AT [cmds] S5=n [cmds]
Default: 8
Range: 0-255
Unit: ASCII
Description: Selects a character used for backspace <BS>


DIAL TONE WAIT TIME
Type: Register
Format AT [cmds] S6=n [cmds]
Default: 4
Range: 4-7
Unit: 1 second
Description: Duration of delay after modem goes off-hook and before dialing.


NO CARRIER TIME-OUT
Type: Register
Format AT [cmds] S7=n [cmds]
Default: 30
Range: 1-60
Unit: 1 second
Description: Maximum wait time the modem uses after dialing to detect a carrier signal from the remote modem for both originating and answering calls.
Note: W dial modifier also uses S7 to set the maximum time to wait.


PAUSE DURATION
Type: Register
Format AT [cmds] S8=n [cmds]
Default: 4
Range: 1-7
Unit: 1 second
Description: Duration of pause per comma (,) command used in a command or dial string


CARRIER DETECT RESPONSE TIME
Type: Register
Format AT [cmds] S9=n [cmds]
Default: 6
Range: 1-255
Unit: .1 second
Description: The amount of time the remote modem’s carrier signal is present before local modem will issue a carrier detect.


CARRIER LOSS RESPONSE TIME
Type: Register
Format AT [cmds] S10=n [cmds]
Default: 18
Range: 1-255
Unit: .1 second
Description: Maximum time allowed by the modem after losing the carrier signal and prior to initiating hang-up process.


TONE PULSE DURATION
Type: Register
Format AT [cmds] S11=n [cmds]
Default: 95
Range: 70-255
Unit: 1 ms
Description: DTMF tone pulse duration and time between tone pulses for tone dialing operations.


ESCAPE SEQUENCE GUARD TIME
Type: Register
Format AT [cmds] S12=n [cmds]
Default: 50
Range: 0-255
Unit: 20 ms
Description: Maximum allowable time between escape character sequence initiation and completion for the escape sequence to be executed. A value of 0 disables guard time.


SLEEP TIMER
Type: Register
Format AT [cmds] S24=n [cmds]
Default: 0
Range: 0-255
Unit: 1 second
Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.


DTR CHANGE THRESHOLD
Type: Register
Format AT [cmds] S25=n [cmds]
Default: 5
Range: 0-255
Unit: .1 second
Description: Sets maximum time a change in the DTR signal will be ignored
Note: This is the function of this register when &M1 is not set.


FLASH DIAL MODIFIER TIME
Type: Register
Format AT [cmds] S29=n [cmds]
Default: 0
Range: 0-255
Unit: .1 second
Description: Time the modem will go on-hook upon receiving the ! dial modifier in dial string.


INACTIVITY TIMER
Type: Register
Format AT [cmds] S30=n [cmds]
Default: 0
Range: 0-255
Unit: 10 seconds
Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating hang-up process.
Note: S30=0 disables the timer and allows indefinite inactivity.


FLOW CONTROL CHARACTER - XON
Type: Register
Format: AT [cmds] S32=n [cmds]
Default: 17
Range: 0-255
Unit: ASCII
Description: Sets the character used to represent XON


FLOW CONTROL CHARACTER - XOFF
Type: Register
Format: AT [cmds] S33=n [cmds]
Default: 19
Range: 0-255
Unit: ASCII
Description: Sets the character used to represent XOFF


DISCONNECT BUFFER DELAY
Type: Register
Format AT [cmds] S38=n [cmds]
Default: 0
Range: 0-255
Unit: 1 second
Description: Sets maximum duration allowed during buffered data calls for modem to perform clearing functions after losing carrier-signal or receiving a clear call signal from the remote modem and before initiating hang-up process. A value of 255 allows an indefinite amount of time to send buffered data prior to hanging-up.


FEATURE NEGOTIATION OPTIONS
Type: Register
Format: AT [cmds] S48=n [cmds]
Description: Selects active error correction and compression protocols

Command

Function
 

S48=0

 Detection negotiation disabled, XID negotiation disabled
»

S48=7

 Detection negotiation and XID negotiation enabled
 

S48=128

 Fall-back to options set by /N


BREAK OPTIONS
Type: Register
Format AT [cmds] S82=n [cmds]
Description: Sets the method for break transmission during error-control and ASB connections.

Command

Function
 

S82=3

 Expedited signaling, immediately send timed break
 

S82=7

 Destructive signaling, buffers cleared, immediately send timed break
»

S82=128

 In-sequence signaling, timed break sent in sequence with transmitted data


CONNECTION FAILURE CODES
Type: Register
Format AT [cmds] S86? [cmds]
Description: Reports codes which correspond to the possible causes of a connection failure

Value

Meaning
 

0

 Normal hang up
 

4

 Carrier signal lost
 

5

 No error-control detected for remote modem during feature negotiation
 

6

 Remote modem failed to respond to feature negotiation
 

7

 Local modem is asynchronous-only, remote modem is synchronous-only
 

8

 No common framing technique found
 

9

 No common protocol found
 

10

 Remote modem sent erroneous feature negotiation message
 

11

 Remote modem failed to send synchronous information
 

12

 No failure - remote modem disconnected normally
 

13

 Remote modem failed to respond after 10 re-transmissions same message
 

14

 Violation of negotiated protocol caused failure


EXTENDED RESULT CODES
Type: Register
Format AT [cmds] S95=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Works in combination with the Wn command to enable extended result codes. Features enabled by S95 take precedence over the options selected by Wn.