EC2400-33

VEN-TEL, INC.

EC2400-33

Card Type

Modem (synchronous/asynchronous)

Chipset

Unidentified

Maximum Data Rate

2400bps

Data Bus

Serial

Data Modulation

Bell 103A/212A

ITU-T V.22, V.22bis

Error Correction/Compression

MNP5, X.PC

CONNECTIONS

Function

Label

Function

Label

Line out

CN1

RS-232/422

CN4

Line in

CN2

Power switch

SW1

DC power

CN3

Front panel switch

SW4

Note: When pressed once, the front panel switch is a hook control. When pressed twice, the modem auto-dials the stored number.

USER CONFIGURABLE SETTINGS

Setting

Label

Position

í DTR normal

SW2/1

Off

DTR forced high

SW2/1

On

í Modem displays verbose result codes

SW2/2

Off

Modem displays numeric result codes

SW2/2

On

í Result codes enabled

SW2/3

On

Result codes disabled

SW2/3

Off

í Command echo enabled

SW2/4

Off

Command echo disabled

SW2/4

On

í Auto-answer enabled

SW2/5

Off

Auto-answer disabled

SW2/5

On

í CD normal (terminal dialer disabled)

SW2/6

Off

CD forced high (terminal dialer disabled)

SW2/6

On

í CTS, DSR, and CD low when idle, high when connected (terminal dialer enabled)

SW2/6

Off

CTS, DSR, and CD normal (terminal dialer enabled)

SW2/6

On

USER CONFIGURABLE SETTINGS (CON’T)

Setting

Label

Position

í Speaker enabled

SW2/7

On

Speaker disabled

SW2/7

Off

í Command sets enabled

SW2/8

On

Command sets disabled

SW2/8

Off

í Switch configuration used

SW2/9

Off

NVRAM configuration used

SW2/9

On

í AT command set enabled

SW2/10

Off

Ven-Tel command set enabled

SW2/10

On

í Factory configured - do not alter

SW3/1

Unidentified

í Factory configured - do not alter

SW3/2

Unidentified

í Factory configured - do not alter

SW3/3

Unidentified

í Factory configured - do not alter

SW3/4

Unidentified

í Factory configured - do not alter

SW3/5

Unidentified

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

HS

Green

On

Modem is operating at 2400bps

HS

Red

On

Modem is operating at 1200bps

HS

N/A

Off

Modem is operating at 300bps

AA

Red

On

Auto-answer enabled

AA

Red

Off

Auto-answer disabled

AA

Red

Blinking

Phone is ringing

CD

Red

On

Carrier signal detected

CD

Red

Off

Carrier signal not detected

OH

Red

On

Modem is off-hook

OH

Red

Off

Modem is on-hook

RD

Red

On

Modem is receiving data

RD

Red

Off

Modem is not receiving data

SD

Red

On

Modem is transmitting data

SD

Red

Off

Modem is not transmitting data

TR

Red

On

DTR signal is high

TR

Red

Off

DTR signal is low

MR/EC

Green

On

Modem is connected in error-correcting mode

MR/EC

Red

On

Power is on

MR/EC

Red

Blinking

Modem is in test mode

MR/EC

Red

Off

Power is off

SUPPORTED STANDARD COMMANDS

Basic AT Commands

+++, ‘comma’, A/

A, B, E, F, H, I, M, P, Q, R, T, V, X, Y, Z

&C, &D, &F, &G, &L, &M, &P, &R, &T, &W, &X, &Z

Extended AT Commands

\C, \G, \J, \O, \Q, \T, \V, \X, \Y, \Z

%A, %C

S-Registers

S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S21, S22, S23, S25, S26, S27

Note: See MHI documentation for complete information.

Proprietary AT Command Set

BIT-MAPPED REGISTER S13

Format:

AT [cmds] S13=n [cmds]

Default:

Unidentified

Range:

0 - 255

Description:

Controls extended result codes and data format.

Note:

This register is only used when in switch configuration mode.

Bit

Value

Function

0

N/A

Not used.

1

0

1

Extended result codes disabled.

Extended result codes enabled.

2

0

1

Parity disabled.

Parity enabled.

3

0

1

Odd parity enabled.

Even parity enabled.

4

0

1

Data word is 7 bits.

Data word is 8 bits.

5

N/A

Not used.

6

N/A

Not used.

7

0

1

SPACE parity enabled.

MARK parity enabled.

BIT-MAPPED REGISTER S14

Format:

AT [cmds] S14=n [cmds]

Default:

Unidentified

Range:

0-255

Unit:

Bit-mapped

Description:

Controls auto-answer, echo, result codes and display, dial mode, and answer/originate mode.

Bit

Value

Function

0

0

Auto-answer disabled at power-up (switch configuration only).

Auto-answer enabled at power-up (switch configuration only).

1

0

1

Command echo disabled.

Command echo enabled.

2

0

1

Result codes enabled.

Result codes disabled.

3

0

1

Display result codes in numeric format.

Display result codes in verbose format.

4

0

1

Command sets enabled.

Command sets disabled.

5

0

1

Tone dial enabled.

Pulse dial enabled.

6

0

1

Speaker disabled (switch configuration only).

Speaker enabled until carrier detected (switch configuration only).

Config. Mode

Function

7

0

1

0

1

NVRAM

NVRAM

Switch

Switch

Answer mode enabled.

Originate mode enabled.

Speaker not always enabled.

Speaker always enabled.

BIT-MAPPED REGISTER S15

Format:

AT [cmds] S15=n [cmds]

Default:

Unidentified

Range:

0 - 255

Description:

Controls data speed, answer/originate mode, and duplexing.

Note:

This register is only used when in switch configuration mode.

Bit

Value

Function

1, 0

00

01

10

11

Modem will operate at 2400bps.

Modem will operate at 300bps.

Modem will operate at 110bps.

Modem will operate at 1200bps.

2

0

1

Modem is in answer mode.

Modem is in originate mode.

3

0

1

Modem uses half-duplex.

Modem uses full-duplex.

5, 4

00

01

10

11

Modem will operate at 2400bps.

Modem will operate at 300bps.

Modem will operate at 110bps.

Modem will operate at 1200bps.

COMMAND SET - VEN-TEL

Type:

Immediate

Format:

AT [cmds] %V

Description:

Enters the Ven-Tel command set mode.

CONNECT MODE

Type:

Configuration

Format:

AT [cmds] \Nn [cmds]

Description:

Controls the type of connection the modem will make.

Command

Function

\N0

Normal mode enabled.

í \N1

Direct mode enabled.

\N2

MNP reliable mode enabled.

\N3

MNP auto-reliable mode enabled.

\N4

X.PC auto-reliable mode enabled.

\N5

MNP and X.PC auto-reliable answer mode, MNP auto-reliable originate mode.

DATA SET READY (DSR) AND CLEAR TO SEND (CTS) SIGNALS

Type:

Configuration

Format:

AT [cmds] \Dn [cmds]

Description:

Controls the behaviour of the DSR and CTS signals.

Command

Function

í \D0

DSR and CTS forced high.

\D1

CTS follows CD. If &C is not set to 1 then DSR also follows CD, otherwise it follows OH.

\D2

DSR and CTS follow CD.

\D3

DSR follows answer tone, CTS forced high.

DIAL

Type:

Immediate

Format:

AT [cmds] D<#> [cmds]

Description:

Dials the telephone number indicated 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.

DM

Attempt to make a MNP mode connection. Modem will fall back to normal mode.

DP

Pulse dialing enabled.

DR

Answer mode enabled; originate mode disabled following handshake initiation.

DS

Dial stored telephone number.

DT

Tone dialing enabled.

DV

Attempt to make a peer-to-peer mode X.PC connection. Modem will fall back to normal mode.

DW

Dialing resumed following dial tone detection.

DX

Attempt to make a network mode X.PC connection. Modem will fall back to normal mode.

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," 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.

DISPLAY CONFIGURATION

Type:

Immediate

Format:

AT [cmds] \S [cmds]

Description:

Displays the settings of selected commands.

DISPLAY S-REGISTERS

Type:

Immediate

Format:

AT [cmds] %R [cmds]

Description:

Displays the settings of all S-registers.

ON-LINE

Type:

Immediate

Format:

AT [cmds] On

Description:

Instructs the modem to return to on-line state.

Command

Function

O0

Return to on-line state.

O1

Return to on-line state and end remote digital loopback test in progress.

O2

Return to on-line state and initiate remote digital loopback test.

X.PC CHARACTER DELAY

Type:

Register

Format:

AT [cmds] S50=n [cmds]

Default:

Unidentified

Range:

10 - 255

Unit:

1 mS

Description:

Sets the maximum delay time between the modem receiving a character from the DTE and the modem transmitting an X.PC block.

X.PC DISCONNECT

Type:

Immediate

Format:

AT [cmds] %H [cmds]

Description:

Disconnects from the X.PC network connection while maintaining the physical connection.

MISCELLANEOUS TECHNICAL NOTE

Bits of bit-mapped registers that are not used may be either 0 or 1.

Proprietary Ven-Tel Command Set

CLEAR STORED NUMBERS

Type:

Immediate

Format:

C

Description:

Clears all stored numbers.

COMMAND SET - AT

Type:

Configuration

Format:

Q

Description:

Returns to the AT command set.

DIAL

Type:

Immediate

Format:

K

Description:

The user will be prompted for a number to dial. The following modifiers may be used.

Command

Function

M

Attempt to make a MNP mode connection. Modem will fall back to normal mode.

V

Attempt to make a peer-to-peer mode X.PC connection. Modem will fall back to normal mode.

X

Attempt to make a network mode X.PC connection. Modem will fall back to normal mode.

&

Dialing resumed following dial tone detection.

,

Dialing paused for 2 seconds.

!

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

%

Dialing paused for 5 seconds.

DIAL STORED NUMBER

Type:

Immediate

Format:

n

Default:

N/A

Range:

1 - 9

Unit:

N/A

Description:

Dials stored number n.

DISPLAY STORED NUMBERS

Type:

Immediate

Format:

D

Description:

Displays all stored numbers.

HELP

Type:

Immediate

Format:

H

Description:

Displays a list of all commands.

LOGOFF STRING

Type:

Configuration

Format:

L

Description:

Sets a string that the modem will disconnect upon receiving. Control characters may be entered by preceding the letter with a caret.

REDIAL

Type:

Immediate

Format:

R

Description:

Redials the last number dialed.

REDIAL REPEATEDLY

Type:

Immediate

Format:

F

Description:

Redials the last number dialed up to ten times with an increasingly long pause between attempts.

SET OPTIONS

Type:

Configuration

Format:

O

Description:

Displays a menu of options that may be set.

STORE NUMBER IN NVRAM

Type:

Configuration

Format:

Sn

[prompt]: <#>RaLb

Description:

The user will be prompted to enter the number to store. At the end of this number, the user may enter the R and L options. The modem will redial this number a times, and if this connection still can not be made, it will proceed to the number stored in memory location b.

MISCELLANEOUS TECHNICAL NOTE

AT commands may still be entered in this mode.

Card Type	Modem (synchronous/asynchronous)
Chipset	Unidentified
Maximum Data Rate	2400bps
Data Bus	Serial
Data Modulation	Bell 103A/212A ITU-T V.22, V.22bis
Error Correction/Compression	MNP5, X.PC

CONNECTIONS
Function	Label		Function		Label
Line out		CN1		RS-232/422		CN4
Line in		CN2		Power switch		SW1
DC power		CN3		Front panel switch		SW4
Note: When pressed once, the front panel switch is a hook control. When pressed twice, the modem auto-dials the stored number.

USER CONFIGURABLE SETTINGS
Setting	Label	Position
í DTR normal	SW2/1	Off
DTR forced high	SW2/1	On
í Modem displays verbose result codes	SW2/2	Off
Modem displays numeric result codes	SW2/2	On
í Result codes enabled	SW2/3	On
Result codes disabled	SW2/3	Off
í Command echo enabled	SW2/4	Off
Command echo disabled	SW2/4	On
í Auto-answer enabled	SW2/5	Off
Auto-answer disabled	SW2/5	On
í CD normal (terminal dialer disabled)	SW2/6	Off
CD forced high (terminal dialer disabled)	SW2/6	On
í CTS, DSR, and CD low when idle, high when connected (terminal dialer enabled)	SW2/6	Off
CTS, DSR, and CD normal (terminal dialer enabled)	SW2/6	On

USER CONFIGURABLE SETTINGS (CON’T)
Setting	Label	Position
í Speaker enabled	SW2/7	On
Speaker disabled	SW2/7	Off
í Command sets enabled	SW2/8	On
Command sets disabled	SW2/8	Off
í Switch configuration used	SW2/9	Off
NVRAM configuration used	SW2/9	On
í AT command set enabled	SW2/10	Off
Ven-Tel command set enabled	SW2/10	On
í Factory configured - do not alter	SW3/1	Unidentified
í Factory configured - do not alter	SW3/2	Unidentified
í Factory configured - do not alter	SW3/3	Unidentified
í Factory configured - do not alter	SW3/4	Unidentified
í Factory configured - do not alter	SW3/5	Unidentified

DIAGNOSTIC LED(S)
LED	Color	Status	Condition
HS	Green	On	Modem is operating at 2400bps
HS	Red	On	Modem is operating at 1200bps
HS	N/A	Off	Modem is operating at 300bps
AA	Red	On	Auto-answer enabled
AA	Red	Off	Auto-answer disabled
AA	Red	Blinking	Phone is ringing
CD	Red	On	Carrier signal detected
CD	Red	Off	Carrier signal not detected
OH	Red	On	Modem is off-hook
OH	Red	Off	Modem is on-hook
RD	Red	On	Modem is receiving data
RD	Red	Off	Modem is not receiving data
SD	Red	On	Modem is transmitting data
SD	Red	Off	Modem is not transmitting data
TR	Red	On	DTR signal is high
TR	Red	Off	DTR signal is low
MR/EC	Green	On	Modem is connected in error-correcting mode
MR/EC	Red	On	Power is on
MR/EC	Red	Blinking	Modem is in test mode
MR/EC	Red	Off	Power is off

BIT-MAPPED REGISTER S13
Format:		AT [cmds] S13=n [cmds]
Default:		Unidentified
Range:		0 - 255
Description:		Controls extended result codes and data format.
Note:		This register is only used when in switch configuration mode.
Bit	Value		Function
0	N/A		Not used.
1	0 1		Extended result codes disabled. Extended result codes enabled.
2	0 1		Parity disabled. Parity enabled.
3	0 1		Odd parity enabled. Even parity enabled.
4	0 1		Data word is 7 bits. Data word is 8 bits.
5	N/A		Not used.
6	N/A		Not used.
7	0 1		SPACE parity enabled. MARK parity enabled.

BIT-MAPPED REGISTER S14
Format:		AT [cmds] S14=n [cmds]
Default:		Unidentified
Range:		0-255
Unit:		Bit-mapped
Description:		Controls auto-answer, echo, result codes and display, dial mode, and answer/originate mode.
Bit	Value	Function
0	0	Auto-answer disabled at power-up (switch configuration only). Auto-answer enabled at power-up (switch configuration only).
1	0 1	Command echo disabled. Command echo enabled.
2	0 1	Result codes enabled. Result codes disabled.
3	0 1	Display result codes in numeric format. Display result codes in verbose format.
4	0 1	Command sets enabled. Command sets disabled.
5	0 1	Tone dial enabled. Pulse dial enabled.
6	0 1	Speaker disabled (switch configuration only). Speaker enabled until carrier detected (switch configuration only).
		Config. Mode	Function
7	0 1 0 1	NVRAM NVRAM Switch Switch	Answer mode enabled. Originate mode enabled. Speaker not always enabled. Speaker always enabled.

BIT-MAPPED REGISTER S15
Format:		AT [cmds] S15=n [cmds]
Default:		Unidentified
Range:		0 - 255
Description:		Controls data speed, answer/originate mode, and duplexing.
Note:		This register is only used when in switch configuration mode.
Bit	Value		Function
1, 0	00 01 10 11		Modem will operate at 2400bps. Modem will operate at 300bps. Modem will operate at 110bps. Modem will operate at 1200bps.
2	0 1		Modem is in answer mode. Modem is in originate mode.
3	0 1		Modem uses half-duplex. Modem uses full-duplex.
5, 4	00 01 10 11		Modem will operate at 2400bps. Modem will operate at 300bps. Modem will operate at 110bps. Modem will operate at 1200bps.

COMMAND SET - VEN-TEL
Type:	Immediate
Format:	AT [cmds] %V
Description:	Enters the Ven-Tel command set mode.

CONNECT MODE
Type:	Configuration
Format:	AT [cmds] \Nn [cmds]
Description:	Controls the type of connection the modem will make.
Command	Function
\N0	Normal mode enabled.
í \N1	Direct mode enabled.
\N2	MNP reliable mode enabled.
\N3	MNP auto-reliable mode enabled.
\N4	X.PC auto-reliable mode enabled.
\N5	MNP and X.PC auto-reliable answer mode, MNP auto-reliable originate mode.

DIAL
Type:	Immediate
Format:	AT [cmds] D<#> [cmds]
Description:	Dials the telephone number indicated 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.
DM	Attempt to make a MNP mode connection. Modem will fall back to normal mode.
DP	Pulse dialing enabled.
DR	Answer mode enabled; originate mode disabled following handshake initiation.
DS	Dial stored telephone number.
DT	Tone dialing enabled.
DV	Attempt to make a peer-to-peer mode X.PC connection. Modem will fall back to normal mode.
DW	Dialing resumed following dial tone detection.
DX	Attempt to make a network mode X.PC connection. Modem will fall back to normal mode.
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," 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.

DISPLAY CONFIGURATION
Type:	Immediate
Format:	AT [cmds] \S [cmds]
Description:	Displays the settings of selected commands.

DISPLAY S-REGISTERS
Type:	Immediate
Format:	AT [cmds] %R [cmds]
Description:	Displays the settings of all S-registers.

ON-LINE
Type:	Immediate
Format:	AT [cmds] On
Description:	Instructs the modem to return to on-line state.
Command	Function
O0	Return to on-line state.
O1	Return to on-line state and end remote digital loopback test in progress.
O2	Return to on-line state and initiate remote digital loopback test.

X.PC CHARACTER DELAY
Type:	Register
Format:	AT [cmds] S50=n [cmds]
Default:	Unidentified
Range:	10 - 255
Unit:	1 mS
Description:	Sets the maximum delay time between the modem receiving a character from the DTE and the modem transmitting an X.PC block.

X.PC DISCONNECT
Type:	Immediate
Format:	AT [cmds] %H [cmds]
Description:	Disconnects from the X.PC network connection while maintaining the physical connection.

CLEAR STORED NUMBERS
Type:	Immediate
Format:	C
Description:	Clears all stored numbers.

COMMAND SET - AT
Type:	Configuration
Format:	Q
Description:	Returns to the AT command set.

DIAL STORED NUMBER
Type:	Immediate
Format:	n
Default:	N/A
Range:	1 - 9
Unit:	N/A
Description:	Dials stored number n.

DISPLAY STORED NUMBERS
Type:	Immediate
Format:	D
Description:	Displays all stored numbers.

HELP
Type:	Immediate
Format:	H
Description:	Displays a list of all commands.

LOGOFF STRING
Type:	Configuration
Format:	L
Description:	Sets a string that the modem will disconnect upon receiving. Control characters may be entered by preceding the letter with a caret.

REDIAL
Type:	Immediate
Format:	R
Description:	Redials the last number dialed.

REDIAL REPEATEDLY
Type:	Immediate
Format:	F
Description:	Redials the last number dialed up to ten times with an increasingly long pause between attempts.

SET OPTIONS
Type:	Configuration
Format:	O
Description:	Displays a menu of options that may be set.

STORE NUMBER IN NVRAM
Type:	Configuration
Format:	Sn [prompt]: <#>RaLb
Description:	The user will be prompted to enter the number to store. At the end of this number, the user may enter the R and L options. The modem will redial this number a times, and if this connection still can not be made, it will proceed to the number stored in memory location b.