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. |