3COM CORPORATION

MEGAHERTZ 10/100 LAN+56K (3CCFEM556)
Card Type Modem/Network interface card
Chip Set Unidentified
NIC Type Ethernet
Boot ROM Not available
Network Transfer Rate 100Mbps/10Mbps
Topology Star, Peer-Peer
Wiring Type Unshielded twisted pair
I/O Options RJ-11 port, RJ-45 port
Maximum Modem Rate 56Kbps
Maximum Fax Rate 9600bps
Data Modulation Protocol ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, V.90
Fax Modulation Protocol ITU-T V.27ter, V.29
Error Correction/Compression MNP10, V.42, V.42bis
Fax Class Unidentified
Data Bus PCMCIA Type II/ PCMCIA Type III


55530

SUPPORTED COMMAND SET

Basic AT Commands
AT, ‘+++’, A/
A, E, F, H, M, O, V
&C, &G, &T, &W, &Z

S Registers
S0, S1, S2, S3, S4, S5, S8, S9, S10, S11, S12, S18, S25, S38
Note: See MHI Help File for full command documentation.


Proprietary AT Command Set

BREAK OPTIONS
Type: Configuration
Format AT [cmds] &Yn [cmds]
Description: Sets the method for break transmission during error-control.

Command

Function

&Y0

 Destructive signaling

&Y1

 Destructive and expedited signaling

&Y2

 Nondestructive, expedited signaling

&Y3

 Nondestructive, unexpeditaed signaling


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.32/CCITT at 300 or 1200bps

B1

 Bell 212A at 300 or 1200bps


COUNTRY SETTINGS
Type: Configuration
Format: AT [cmds] &Pn [cmds]
Description: Selects method of dialing for international use

Command

Function

&P0

 Enables North American pulse dial

&P1

 Enables UK pulse dial


DATA COMPRESSION CONTROL
Type: Configuration
Format: AT [cmds] &Kn [cmds]
Description: Enables data compression modes

Command

Function

&K0

 Disable all data compression

&K1

 Enable V.42bis, MNP5 data compression

&K2

 Enable only V.42bis data compression

&K3

 Enables selective data compression


DATA COMPRESSION RESULT CODES
Type: Configuration
Format: AT [cmds] &An [cmds]
Description: Selects result codes reported during data compression

Command

Function

&A0

 Disables all /ARQ result codes

&A1

 Enables /ARQ result codes

&A2

 Enables /modulation result codes

&A3

 Enables /extra result codes


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


DATA TERMINAL READY (DTR)
Type: Configuration
Format: AT [cmds] &Dn [cmds]
Description: Selects modem response to DTR

Command

Function

&D0

 Modem does not respond to DTR

&D1

 Modem goes to command mode on DTR toggle

&D2

 Enable DTE control of DTR

&D3

 Enable DTE control of DTR and reset


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

 Redial last number dialed

DP

 Pulse dialing enabled

DR

 Answer mode enabled; originate mode disabled following handshake initiation.

DSn

 Dial number stored at location n

DT

 Tone dialing enabled/Pulse dialing disabled

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 Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string.

D$

 Reports dial commands

D;

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

D&

 Wait for credit card prompt tone dectection function enabled.


DTE SETTINGS
Type: Configuration
Format: AT [cmds] &Bn [cmds]
Description: Controls DTE settings and speeds

Command

Function

&B0

 Enables floating DTE speed

&B1

 Enables fixed DTE speed

&B2

 Enables fixed DTE speed during data compression


ERROR CORRECTION CONTROL
Type: Configuration
Format: AT [cmds] &Mn [cmds]
Description: Selects error corrections modes

Command

Mode

&M0

 Enables normal mode

&M4

 Enables ARQ/normal mode

&M5

 Enables ARQ mode


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

Command

Function

&F0

 Sets the factory default profile, using hardware flow control

&F1

 Sets the factory default profile, using hardware flow control

&F2

 Sets the factory default profile, using software control


FLOW CONTROL
Type: Configuration
Format: AT [cmds] &Hn [cmds]
Description: Displays information requested

Command

Function

&H0

 Disables flow control for received data

&H1

 Enables hardware flow control (RTS/CTS) for received data

&H2

 Enables software flow control (XON/XOFF) for received data

&H3

 Enables both software and hardware flow control


FLOW CONTROL
Type: Configuration
Format: AT [cmds] &In [cmds]
Description: Displays information requested

Command

Function

&I0

 Disables flow control for received data

&I1

 Enables software control (XON/XOFF) and sends signals to both modems

&I2

 Enables software control (XON/XOFF) but sends signals to local modem only

&I3

 Enables HP Eng/Ack in Host mode

&I4

 Enables HP Eng/Ack in Terminal mode

&I5

 Enables software control, sends signals if using error correction, looks for incoming signals if using data compression


LINK SPEED
Type: Configuration
Format: AT [cmds] &Nn [cmds]
Description: Selects highest link speed limits

Command

Function

&N0

 Enables highest link speed

&N1

 300bps

&N2

 1200bps

&N3

 2400bps

&N4

 4800bps

&N5

 7200bps

&N6

 9600bps

&N7

 12000bps

&N8

 14400bps

&N9

 16800bps

&N10

 19200bps

&N11

 21600bps

&N12

 24000bps

&N13

 26400bps

&N14

 28800bps

&N15

 31200bps

&N16

 33600bps

&N17

 33333bps

&N18

 37333bps

&N19

 41333bps

&N20

 42666bps

&N21

 44000bps

&N22

 45333bps

&N23

 46666bps

&N24

 48000bps

&N25

 49333bps

&N26

 50666bps

&N27

 52000bps

&N28

 53333bps

&N29

 54666bps

&N30

 56000bps

&N31

 57333bps


LINK SPEED
Type: Configuration
Format: AT [cmds] &Un [cmds]
Description: Selects lowest link speed limits

Command

Function

&U0

 Disable link speed setting

&U1

 300bps

&U2

 1200bps

&U3

 2400bps

&U4

 4800bps

&U5

 7200bps

&U6

 9600bps

&U7

 12000bps

&U8

 14400bps

&U9

 16800bps

&U10

 19200bps

&U11

 21600bps

&U12

 24000bps

&U13

 26400bps

&U14

 28800bps

&U15

 31200bps

&U16

 33600bps

&U17

 Minimum link speed = 33333bps

&U18

 Minimum link speed = 37333bps

&U19

 Minimum link speed = 41333bps

&U20

 Minimum link speed = 42666bps

&U21

 Minimum link speed = 44000bps

&U22

 Minimum link speed = 45333bps

&U23

 Minimum link speed = 46666bps

&U24

 Minimum link speed = 48000bps

&U25

 Minimum link speed = 49333bps

&U26

 Minimum link speed = 50666bps

&U27

 Minimum link speed = 52000bps

&U28

 Minimum link speed = 53333bps

&U29

 Minimum link speed = 54666bps

&U30

 Minimum link speed = 56000bps

&U31

 Minimum link speed = 57333bps


REPEAT LAST COMMAND
Type: Immediate
Format: AT [cmds] A> [cmds]
Description: Repeats the last command, continuously


REPORT AT COMMANDS
Type: Immediate
Format: AT [cmds] $ [cmds]
Description: Displays the list of AT commands


REPORT AT COMMANDS
Type: Immediate
Format: AT [cmds] &$ [cmds]
Description: Displays the list of AT ampersand commands


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

Command

Function

I0

 Reports modem model

I1

 Reports ROM checksum

I2

 Tests and reports RAM checksum

I3

 Reports product ID

I4

 Reports current modem settings

I5

 Reports NVRAM settings

I6

 Reports link diagnostics

I7

 Reports product configuration

I8

 Reports OK

I9

 Reports Plug and Play ID

I10

 Reprots ERROR

I11

 Reports link diagnaostics


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

Command

Function

&R0

 CTS follows RTS in data mode; RTS is ignored in command mode.

&R1

 CTS forced high, RTS is ignored.

&R2

 Receive set to DTE/RTS high


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

Command

Function

X0

 Result codes 0 - 4 enabled.

X1

 Result codes 0 - 5 & 10 enabled.

X2

 Result codes 0 - 6 & 10 enabled.

X3

 Result codes 0 - 5, 7 & 10 enabled.

X4

 Result codes 0 - 7 & 10 enabled.


SOFT RESET
Type: Immediate
Format: AT [cmds] Zn [cmds]
Description: Restores modem profiles previously saved in non-volatile RAM using the &W command.

Command

Function

Z0

 Resets modem and follows instructions set in Y

Z1

 Resets modem and enables profile in &W0

Z2

 Resets modem and enables profile in &W1

Z3

 Resets modem and enables settings in &F0 and loads factory default profile 1

Z4

 Resets modem and enables settings in &F1 and loads factory default profile

Z5

 Resets modem and enables settings in &F2 and loads factory default profile 2


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

Command

Function

L0

 Sets speaker to lowest volume

L1

 Sets speaker to low volume

L2

 Sets speaker to medium volume

L3

 Sets speaker to high volume


USER PROFILE SELECTION
Type: Configuration
Format: AT [cmds] Yn [cmds]
Description: Commands modem to use the selcted user profile on the following reset

Command

Function

Y0

 Enables user profile in &W0 after the next reset

Y1

 Enables user profile in &W1 after the next reset


Cellular Command Set

CELLULAR DEFAULTS
Type: Configuration
Format: AT [cmds] &F5 [cmds]
Description: Commands modem to load cellular default setting


ENHANCED MODE
Type: Configuration
Format: AT [cmds] ~Z [cmds]
Description: Commands modem to toggle enhanced mode


ETC MODE
Type: Configuration
Format: AT [cmds] &F6 [cmds]
Description: Commands modem to load ETC mode and wait for cellular call


S(status) Registers

BIT-MAPPED REGISTER S13
Format: AT [cmds] S13=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Controls reset criteria, selects delete key and escape code hangup.

Value

Function

S13=1

 Reset on DTR loss

S13=2

 Enable reduced non-ARQ transmit buffer

S13=4

 Set DEL key to backspace function

S13=8

 Do "DS0" on DTR

S13=16

 Do "DS0" on reset

S13=64

 Disable quick retrains

S13=128

 Enables escape code hangup


BIT-MAPPED REGISTER S15
Format: AT [cmds] S15=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Controls error correction configuration.

Value

Function

S15=1

 Disable MNP/V.42 in V.22 mode

S15=2

 Disable MNP/V.42 in V.22bis mode

S15=4

 Disable MNP/V.42 in V.32 and V.34 modes

S15=8

 Disable MNP handshake

S15=16

 Disable MNP Level 4 mode

S15=32

 Disable MNP Level 3 mode

S15=64

 Enable unusual MNP incompatibility

S15=128

 Disable V.42 error correction

S15=136

 Disable V.42 detection phase


BIT-MAPPED REGISTER S27
Format AT [cmds] S27=n [cmds]
Range: 0-111
Unit: Bit-mapped
Description: Selects ITU-T/Bell modes.

Value

Function

S27=1

 Enables V.21 mode

S27=2

 Disables TCM mode

S27=4

 Disables V.32 mode

S27=8

 Disables 2100Hz

S27=16

 Enables V.23 fallback mode

S27=32

 Disables V.32bis mode

S27=64

 Disables selective reject

S27=128

 Enables software compatibility mode


BIT-MAPPED REGISTER S32
Format AT [cmds] S32=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Selects connection protocols.

Value

Function

S32=1

 Enables V.8 call indicate

S32=2

 Enables V.8 mode

S32=4

 Disable V.FC mode

S32=8

 Disables V.34 modulation

S32=16

 Disables V.34+ mode


BIT-MAPPED REGISTER S33
Format AT [cmds] S33=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Selects V.34 and V.34+ connection rates.

Value

Function

S33=1

 Disables 2400 symbol rate

S33=2

 Disables 2743 symbol rate

S33=4

 Disables 2800 symbol rate

S33=8

 Disables 3000 symbol rate

S33=16

 Disables 3200 symbol rate

S33=32

 Disables 3429 symbol rate

S33=128

 Disables shaping


BIT-MAPPED REGISTER S34
Format AT [cmds] S34=n [cmds]
Range: 0-255
Unit: Bit-mapped
Description: Selects V.34 and V.34+ connection setup modes

Value

Function

S34=1

 Disable 8S-2D trellis encoding

S34=2

 Disable 16S-4D trellis encoding

S34=4

 Disable 32S-2D trellis encoding

S34=8

 Disable 64S-4D trellis encoding

S34=16

 Disables nonlinear coding

S34=32

 Disables transmit level deviation

S34=64

 Disables preemphasis

S34=128

 Disables precoding


BLIND DIALING DELAY
Type: Register
Format AT [cmds] S6=n [cmds]
Range: 2-255
Unit: 1 second
Description: Duration of delay after modem goes off-hook and before dialing blindly during modes set by X2 or X4 commands.


DIAL TEST MODES
Type: Register
Format: AT [cmds] S16=n [cmds]
Range: 2
Unit: Bit-mapped
Description: Controls self tests.

Value

Function

S16=2

 Enables dial test


ERROR CORRECTION BREAK LENGTH
Type: Register
Format: AT [cmds] S21=n [cmds]
Default: 10
Range: 0-255
Unit: 0.1 second
Description: Sets the break length for error correction


INACTIVITY TIMER
Type: Register
Format: AT [cmds] S19=n [cmds]
Default: 0
Range: 0-255
Unit: 1 minute
Description: Sets the duration for the inactivity timer
Note: S19=0 disables the timer and allows an indefinite duration.


NO CARRIER TIME-OUT
Type: Register
Format AT [cmds] S7=n [cmds]
Range: 1-255
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.


V.21 ANSWER FALLBACK TIMER
Type: Register
Format AT [cmds] S29=n [cmds]
Range: 0-255
Unit: .01 second
Description: Controls the duration of the V.21 answer mode fallback timer


V.32 HANDSHAKE TIMER
Type: Register
Format AT [cmds] S28=n [cmds]
Default: 0
Range: 0-255
Unit: 0.8 seconds
Description: Controls the time duration of handshake in V.32 mode


XOFF CHARACTER
Type: Register
Format AT [cmds] S23=n [cmds]
Default: 19
Range: 0-127
Unit: ASCII
Description: Sets the ASCII code for the XOFF character


XON CHARACTER
Type: Register
Format: AT [cmds] S22=n [cmds]
Default: 17
Range: 0-127
Unit: ASCII
Description: Sets the ASCII code for the XON character