CARDINAL 2450MNP, 2400MNP MTL setting manual edited

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Card Type Modem (asynchronous)
Chip Set Unidentified
Maximum Data Rate 2400bps
Data Bus 8-bit ISA
Data Modulation Protocol Bell 103/212A

ITU-T V.21, V.22, V.22bis

Error Correction/Compression MNP5, V.42, V.42bis

CONNECTIONS

Function Label Function Label

Line out/in CN1 Line in/out CN2

SERIAL PORT ADDRESS

Setting IRQ SW1/A SW1/B SW1/C SW1/D
COM1 (3F8h) 4 Closed Closed Closed Open
COM2 (2F8h) 3 Open Closed Open Closed
COM3 (3E8h) 4 Closed Open Closed Open
COM4 (2E8h) 3 Open Open Open Closed

Proprietary AT Command Set

ACCEPT RELIABLE MODE

Type: Immediate
Format: AT [cmds] \U [cmds]
Description: Accept remote modem’s request for reliable mode

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AUTO-RELIABLE FALLBACK CHARACTER

Type: Configuration
Format: AT [cmds] %An [cmds]
Default: Unidentified
Range: 0-127
Unit: ASCII
Description: Sets the character used as the auto-reliable fallback character
Note: AT%A0 will disable this function.

AUTO-RELIABLE TIME BUFFER CONFIGURATION

Type: Configuration
Format: AT [cmds] \Cn [cmds]
Description: Controls the handling of incoming data during auto-reliable time period

Command Function

í \C0 Data is discarded
\C1 Data is buffered
\C2 Data is discarded; modem returns to normal mode on receiving auto-reliable

fallback character.

BIT MAPPED REGISTERS

Register Default

S14 Unidentified
S21 Unidentified
S22 Unidentified
S23 Unidentified
S27 Unidentified

BREAK SEND

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

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BREAK TYPE

Type: Configuration
Format: AT [cmds] \Kn [cmds]
Description: Configures action of break signal

Command Break from DTE

Reliable/Normal

mode

\K0 Online command

mode enabled,
send no break to
remote modem

\K1 Break sent to

remote modem
and buffers
cleared

\K2 Online command

mode enabled,
send no break to
remote modem

\K3 Send break to

remote modem
immediately

\K4 Online command

mode enabled,
send no break to
remote modem

í \K5 Send break with

transmitted data

Type: Configuration
Format: AT [cmds] %Cn [cmds]
Description: Selects data compression

Command Function

%C0 Data compression disabled
í %C1 MNP5 enabled

Break from DTE

Direct mode

Online command
mode enabled,
send break to
remote modem
immediately
Send break to
remote modem
immediately

Online command
mode enabled,
send break to
remote modem
immediately
Send break to
remote modem
immediately
Online command
mode enabled,
send break to
remote modem
immediately
Send break to
remote modem
immediately

COMPRESSION

Break received

from remote

modem
Buffers cleared,
break sent to DTE

Buffers cleared,
break sent to DTE

Break sent
immediately to
DTE

Break sent
immediately to
DTE
Break sent with
received data to
the DTE

Break sent with
received data to
the DTE

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Modem receives

\B

Break sent to
remote modem
and buffers
cleared

Break sent to
remote modem
and buffers
cleared
Send break to
remote modem
immediately

Send break to
remote modem
immediately
Send break with
transmitted data

Send break with
transmitted data

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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
í \N1 Direct mode enabled
\N2 MNP reliable mode enabled
\N3 Auto-reliable mode enabled

CONVERT TO RELIABLE MODE

Type: Immediate
Format: AT [cmds] \Y [cmds]
Description: Converts to reliable mode from normal or direct mode

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

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

@ Wait for quiet answer

; Modem returned to command state after dialing

DISPLAY CONFIGURATION

Type: Immediate
Format: AT [cmds] \S [cmds]
Description: Displays current modem settings

EXTENDED RESULT CODES

Type: Configuration
Format: AT [cmds] \Vn [cmds]
Description: Select standard or extended result codes

Command Function

\V0 Standard result codes enabled
\V1 Extended result codes enabled

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FLOW CONTROL

Type: Configuration
Format: AT [cmds] \Gn [cmds]
Description: Selects modem port flow control

Command Function

í \G0 Flow control disabled
\G1 Flow control enabled

FLOW CONTROL TYPE

Type: Configuration
Format: AT [cmds] \Qn [cmds]
Description: Sets type of flow control used by modem

Command Function

í \Q0 Flow control disabled
\Q1 XON/XOFF flow control enabled
\Q2 CTS flow control by DCE enabled
\Q3 RTS/CTS flow control enabled

INACTIVITY TIMER

Type: Configuration
Format: AT [cmds] \Tn [cmds]
Default: 0
Range: 0-90
Unit: 1 minute
Description: Sets the length of time that the modem does not receive information before it

disconnects.

Note: AT\T0 will disable timer.

INITIATE RELIABLE MODE

Type: Immediate
Format: AT [cmds] \O [cmds]
Description: Initiates reliable mode from normal or direct mode

LINE SIGNAL QUALITY

Type: Register
Format: AT [cmds] S100 [cmds]
Description: Returns a value which indicates line signal quality

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LINE SPEED

Type: Configuration
Format: AT [cmds] %Nn [cmds]
Description: Controls maximum DCE line speed

Command Function

í %N0 Enable maximum DCE speed
%N1 Maximum DCE speed set to 300bps
%N2 Maximum DCE speed set to 300bps
%N3 Maximum DCE speed set to 300bps
%N5 Maximum DCE speed set to 1200bps
%N6 Maximum DCE speed set to 2400bps

LOCK SERIAL PORT

Type: Configuration
Format: AT [cmds] \Jn [cmds]
Description: Sets operation of serial port speed

Command Function

\J0 Serial speed locked
í \J1 Serial speed follows connect speed

MAXIMUM BLOCK SIZE FOR TRANSMISSION

Type: Configuration
Format: AT [cmds] \An [cmds]
Description: Sets the maximum transmittable block size

Command Function

\A0 MNP block size is 64 characters
\A1 MNP block size is 128 characters
\A2 MNP block size is 192 characters
í \A3 MNP block size is 256 characters

MNP - STREAM/BLOCK MODE

Type: Configuration
Format: AT [cmds] \Ln [cmds]
Description: Selects the transfer mode for MNP link

Command Function

í \L0 Stream mode for MNP enabled
\L1 Block mode for MNP enabled

REPORT INFORMATION

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

Command Function

I0 Reports modem code
I1 Reports ROM checksum
I2 Tests and reports ROM checksum
I3 Reports version information

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SWITCH TO NORMAL MODE

Type: Immediate
Format: AT [cmds] \Z [cmds]
Description: Switches to normal mode from MNP mode

TEST MODES

Type: Register
Format: AT [cmds] S16=n [cmds]
Default: 0
Range: 0-125
Unit: Bit-mapped
Description: Controls loopback tests, analog, digital, remote digital, and self tests.

Bit Value Function

0 í 0

1 í 0 Not used
2 í 0

3 í 0

4 í 0

5 í 0

6 í 0

Type: Configuration
Format: AT [cmds] \Xn [cmds]
Description: Selects whether XON/XOFF signals are sent to remote modem

Command Function

\X0 XON/XOFF signals trapped by local modem
\X1 XON/XOFF passed through local modem

Local analog loopback not in progress

1

Local analog loopback in progress

Local digital loopback not in progress

1

Local digital loopback in progress
Modem not in remote digital loopback

1

Remote digital loopback in progress
Remote digital loopback not requested

1

Remote digital loopback requested
Remote digital loopback w/ self-test not in progress

1

Remote digital loopback w/ self-test in progress
Local analog loopback w/ self-test not in progress

1

Local analog loopback w/ self-test in progress

XON/XOFF PASS-THROUGH