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# 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
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|------------------------------------------------------------|
| Line out | CN1 | RS-232/422 | CN4 |
|--------------------+---------------+---------------+-------|
| Line in | CN2 | Power switch | SW1 |
|--------------------+---------------+---------------+-------|
| DC power | CN3 | Front panel | SW4 |
| | | switch | |
|------------------------------------------------------------|
| 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 | SW2/6 | On |
| disabled) | | |
|-----------------------------------------+-------+----------|
| í CTS, DSR, and CD low when idle, high | SW2/6 | Off |
| when connected (terminal dialer | | |
| enabled) | | |
|-----------------------------------------+-------+----------|
| CTS, DSR, and CD normal (terminal | SW2/6 | On |
| dialer enabled) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | SW3/1 | Unidentified |
| alter | | |
|------------------------------------+--------+--------------|
| í Factory configured - do not | SW3/2 | Unidentified |
| alter | | |
|------------------------------------+--------+--------------|
| í Factory configured - do not | SW3/3 | Unidentified |
| alter | | |
|------------------------------------+--------+--------------|
| í Factory configured - do not | SW3/4 | Unidentified |
| alter | | |
|------------------------------------+--------+--------------|
| í Factory configured - do not | SW3/5 | Unidentified |
| alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Extended result codes disabled. |
| | | |
| | 1 | Extended result codes enabled. |
|----------+---------+---------------------------------------|
| 2 | 0 | Parity disabled. |
| | | |
| | 1 | Parity enabled. |
|----------+---------+---------------------------------------|
| 3 | 0 | Odd parity enabled. |
| | | |
| | 1 | Even parity enabled. |
|----------+---------+---------------------------------------|
| 4 | 0 | Data word is 7 bits. |
| | | |
| | 1 | Data word is 8 bits. |
|----------+---------+---------------------------------------|
| 5 | N/A | Not used. |
|----------+---------+---------------------------------------|
| 6 | N/A | Not used. |
|----------+---------+---------------------------------------|
| 7 | 0 | SPACE parity enabled. |
| | | |
| | 1 | 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 | Command echo disabled. |
| | | |
| | 1 | Command echo enabled. |
|------+-------+---------------------------------------------|
| 2 | 0 | Result codes enabled. |
| | | |
| | 1 | Result codes disabled. |
|------+-------+---------------------------------------------|
| 3 | 0 | Display result codes in numeric format. |
| | | |
| | 1 | Display result codes in verbose format. |
|------+-------+---------------------------------------------|
| 4 | 0 | Command sets enabled. |
| | | |
| | 1 | Command sets disabled. |
|------+-------+---------------------------------------------|
| 5 | 0 | Tone dial enabled. |
| | | |
| | 1 | Pulse dial enabled. |
|------+-------+---------------------------------------------|
| 6 | 0 | Speaker disabled (switch configuration |
| | | only). |
| | 1 | |
| | | Speaker enabled until carrier detected |
| | | (switch configuration only). |
|------+-------+---------------------------------------------|
| | | Config. | Function |
| | | Mode | |
|------+-------+-----------+---------------------------------|
| 7 | 0 | NVRAM | Answer mode enabled. |
| | | | |
| | 1 | NVRAM | Originate mode enabled. |
| | | | |
| | 0 | Switch | Speaker not always enabled. |
| | | | |
| | 1 | Switch | 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 | Modem will operate at 2400bps. |
| | | |
| | 01 | Modem will operate at 300bps. |
| | | |
| | 10 | Modem will operate at 110bps. |
| | | |
| | 11 | Modem will operate at 1200bps. |
|----------+--------+----------------------------------------|
| 2 | 0 | Modem is in answer mode. |
| | | |
| | 1 | Modem is in originate mode. |
|----------+--------+----------------------------------------|
| 3 | 0 | Modem uses half-duplex. |
| | | |
| | 1 | Modem uses full-duplex. |
|----------+--------+----------------------------------------|
| 5, 4 | 00 | Modem will operate at 2400bps. |
| | | |
| | 01 | Modem will operate at 300bps. |
| | | |
| | 10 | Modem will operate at 110bps. |
| | | |
| | 11 | 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. |
+-----------------------------------------------------+