ZOOM TELEPHONICS, INC.
56K EXTERNAL V.34
Card Type | Modem, Fax |
Chip Set | Unidentified |
I/O Options | Line in (RJ-11), line out (RJ11), DTE port (25-pin serial connector) |
Maximum Modem Rate | 56.0Kbps |
Maximum Fax Rate | 14.4Kbps |
Data Modulation Protocol | Bell 103A/212A, ITU-T V.21, V.22, V.22bis,V.23, V.32, V.32bis, V.34, K56flex |
Fax Modulation Protocol | V.17, V.21, CH2, V.27ter, V.29, V.33 |
Error Correction/Compression | MNP5, MNP10, V.42, V.42bis |
Fax Class | Class I & II |
Data Bus | External |
CONNECTIONS | ||||||
Function | Label | Function | Label | |||
Power jack | CN1 | Line in | CN3 | |||
DTE port (25-pin serial connector) | CN2 | Line out | CN4 |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
OH | Unidentified | On | Modem is off-hook |
OH | Unidentified | Off | Modem is on-hook |
AA | Unidentified | On | Auto-answer enabled |
AA | Unidentified | Off | Auto-answer disabled |
AA | Unidentified | Blinking | Phone is ringing |
RD | Unidentified | On | Modem is receiving data |
RD | Unidentified | Off | Modem is not receiving data |
TD | Unidentified | On | Modem is transmitting data |
TD | Unidentified | Off | Modem is not transmitting data |
TR | Unidentified | On | DTR signal is high |
TR | Unidentified | Off | DTR signal is low |
CD | Unidentified | On | Carrier signal detected |
CD | Unidentified | Off | Carrier signal not detected |
CS | Unidentified | On | CTS signal is high |
CS | Unidentified | Off | CTS signal is low |
EC | Unidentified | On | Error correction enabled |
EC | Unidentified | Off | Error correction disabled |
DC | Unidentified | On | Data compression enabled |
DC | Unidentified | Off | Data compression disabled |
V.34 | Unidentified | On | Modem not connected in V.34 mode |
V.34 | Unidentified | Off | Modem connected in V.34 mode |
K56 | Unidentified | On | Modem connected at 56Kbps |
K56 | Unidentified | Off | Modem not connected at 56Kbps |
FAX | Unidentified | On | Fax connection has been made to remote fax modem |
FAX | Unidentified | Off | Fax connection has not been made to remote fax modem |
MSG | Unidentified | On | Faxes are waiting |
MSG | Unidentified | Off | Faxes are not waiting |
MR | Unidentified | On | Power is on |
MR | Unidentified | Off | Power is off |
SUPPORTED COMMAND SET |
Basic AT Commands |
AT, A/ |
A, B, E, H, M, O, P, Q, T, V, W, X, Y, Z |
&C, &T, &W, &Y, &Z |
Extended AT Commands |
%C, %L, %Q |
\A, \B, \G, \L, \N |
-K, -Q |
:E |
+MS |
S Registers |
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S23, S24 |
S25, S26, S27, S28, S29, S31, S32, S33, S38, S40, S41 |
Note: See MHI Help File for full command documentation. |
PROPRIETARY AT COMMAND SET
AUTO-MODE DETECTION | |
Type: | Configuration |
Format: | AT [cmds] Nn [cmds] |
Description: | Enables/disbles automatic detection. |
Command | Function |
N0 | Auto-mode detection disabled |
í N1 | Auto-mode detection enabled |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Mn [cmds] |
Description: | Selects communications mode |
Command | Mode |
&M0 | Asynchronous mode |
COMMUNICATIONS MODE | |
Type: | Configuration |
Format: | AT [cmds] &Qn [cmds] |
Description: | Selects communications mode options |
Command | Mode |
&Q0 | Asynchronous mode, serial port speed follows connect speed. |
í &Q5 | Error correction mode |
&Q6 | Buffered asynchronous mode |
DATA SET READY (DSR) | |
Type: | Configuration |
Format: | AT [cmds] &Sn [cmds] |
Description: | Selects DSR options |
Command | Function |
í &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 after DTR goes is off |
í &D2 | Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. |
&D3 | Modem is initialized after DTR goes off |
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 | Re-dial last number |
DP | Pulse dialing enabled |
DS=n | Dial stored telephone number n (0-3) |
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& | Waits for bong tone |
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^ | Calling tone enabled |
D; | Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. |
GUARD TONE | |
Type: | Configuration |
Format: | AT [cmds] &Gn [cmds] |
Description: | Commands the modem to transmit a guard tone in V.22/V.22bis |
Note: Used primarily for international data transmission | |
Command | Function |
í &G0 | Guard tone disabled |
&G1 | Guard tone disabled |
&G2 | 1800Hz guard tone enabled |
PULSE DIALING RATIO | |
Type: | Configuration |
Format: | AT [cmds] &Pn [cmds] |
Description: | Selects pulse dial make/break ratio |
Command | Function |
í &P0 | 39/61ms at 10pps (North America) |
&P1 | Not used |
&P2 | Not used |
&P3 | Not used |
REPORT INFORMATION | |
Type: | Immediate |
Format: | AT [cmds] In [cmds] |
Description: | Displays information requested |
Command | Function |
I0 | Reports four digit product code |
I1 | Reports ROM checksum |
I2 | Tests and reports ROM checksum |
I3 | Reports firmware revision code |
I4 | Reports identifier string |
I5 | Reports country code |
I6 | Reports data pump chipset revision |
I98 | Reports modem features description |
I99 | Reports modem features in hex bitmap |
SPEAKER VOLUME | |
Type: | Configuration |
Format: | AT [cmds] Ln [cmds] |
Description: | Controls speaker volume |
Command | Function |
í L1 | Low volume setting |
L2 | Medium volume setting |
L3 | Highest volume setting |
TRANSMIT DATA FLOW CONTROL | |
Type: | Configuration |
Format: | AT [cmds] &Kn [cmds] |
Description: | Enables TD flow control options |
Command | Function |
&K0 | Flow control disabled |
í &K3 | RTS/CTS flow control enabled |
&K4 | XON/XOFF flow control enabled |
&K5 | Transparent XON/XOFF flow control enabled |
&K6 | Hardware and software flow control enabled |
EXTENDED AT COMMAND SET
AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD | |
Type: | Configuration |
Format: | AT [cmds] %En [cmds] |
Description: | Controls auto-retrain mode and fallback/fall-forward |
Command | Function |
%E0 | Auto-retrain disabled |
%E1 | Auto-retrain enabled |
í %E2 | Auto-fallback/fall-forward enabled |
%E3 | Auto-retrain and fast hang up enabled |
BREAK TYPE | |
Type: | Configuration |
Format: | AT [cmds] \Kn [cmds] |
Description: | Configures action of break signal |
CONNECT MESSAGE | |
Type: | Configuration |
Format: | AT [cmds] \Vn [cmds] |
Description: | Enables/disables single line connect message |
Command | Function |
\V=0 | Single line connect message disabled |
\V=1 | Single line connect message enabled. CONNECT <DTE speed></Modulation></Protocol></Compression></Line speed> |
AT VOICE COMMAND SET
DISTINCTIVE RING | |||
Format: | AT [cmds] -SDR=n [cmds] | ||
Default: | Unidentified | ||
Range: | 0 - 255 | ||
Description: | Selects which distinctive ring signals the modem will respond to. | ||
Bit | Value | Function | |
0 | 0 | Distinctive ring disabled | |
1 | 0 1 | Do not respond to distinctive ring type 1. Respond to distinctive ring type 1. | |
2 | 0 1 | Do not respond to distinctive ring type 2. Respond to distinctive ring type 2. | |
3 | 0 1 | Do not respond to distinctive ring types 1 & 2. Respond to distinctive ring types 1 & 2. | |
4 | 0 1 | Do not respond to distinctive ring type 3. Respond to distinctive ring type 3. | |
5 | 0 1 | Do not respond to distinctive ring types 1 & 3. Respond to distinctive ring types 1 & 3. | |
6 | 0 1 | Do not respond to distinctive ring types 2 & 3. Respond to distinctive ring types 2 & 3. | |
7 | 0 1 | Do not respond to distinctive ring types 1, 2 & 3. Respond to distinctive ring types 1, 2 & 3. |
DISTINCTIVE RING | |
Type: | Configuration |
Format: | AT [cmds] $$Rn [cmds] |
Description: | Enables/disables distinctive ring |
Command | Function |
$$R0 | Distinctive ring disabled |
$$R1 | Distinctive ring enabled |
MNP10EC | |
Type: | Configuration |
Format: | AT [cmds] -SECn, [cmds] |
Description: | Enable/disable MNP10EC |
Command | Function |
í -SEC0 | MNP10EC disabled |
-SEC1 | MNP10EC enabled |
S(status)-REGISTERS
BREAK OPTIONS | ||
Type: | Register | |
Format | AT [cmds] S82=n [cmds] | |
Description: | Sets the method for break transmission during error-control and ASB connections. | |
Command | Function | |
S82=3 | Expedited signaling, immediately send timed break | |
S82=7 | Destructive signaling, buffers cleared, immediately send timed break | |
S82=128 | In-sequence signaling, timed break sent in sequence with transmitted data |
CONNECTION FAILURE CODES | |
Type: | Register |
Format | AT [cmds] S86? [cmds] |
Description: | Reports codes which correspond to the possible causes of a connection failure |
Value | Meaning |
0 | Normal hang up |
4 | Carrier signal lost |
5 | No error-control detected for remote modem during feature negotiation |
6 | Remote modem failed to respond to feature negotiation |
7 | Local modem is asynchronous-only, remote modem is synchronous-only |
8 | No common framing technique found |
9 | No common protocol found |
10 | Remote modem sent erroneous feature negotiation message |
11 | Remote modem failed to send synchronous information |
12 | No failure - remote modem disconnected normally |
13 | Remote modem failed to respond after 10 re-transmissions same message |
14 | Violation of negotiated protocol caused failure |
DCE LINE SPEED | |
Type: | Register |
Format | AT [cmds] S37=n [cmds] |
Description: | Sets the maximum allowable data exchange rate attempted during handshake process. |
Command | Function |
S37=0 | Speed of last connection |
S37=1 | 300bps |
S37=2 | 300bps |
S37=3 | 300bps |
S37=4 | Reserved |
S37=5 | 1200bps |
S37=6 | 2400bps |
S37=7 | 75bps send, 1200bps receive |
S37=8 | 4800bps |
S37=9 | 9600bps |
S37=10 | 12.0Kbps |
S37=11 | 14.4Kbps |
S37=12 | 7200bps |
ERROR CORRECTION NEGOTIATION | |
Type: | Register |
Format | AT [cmds] S36=n [cmds] |
Description: | Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q. |
Command | Function |
S36=0 | Hang up |
S36=3 | Attempt a buffered connection |
S36=4 | Attempt a connection at MNP2-4; if that fails, hang up. |
S36=7 | Attempt a connection at MNP2-4; if that fails, attempt a buffered connection. |
ERROR CORRECTION/COMPRESSION | |||
Type: | Register | ||
Format: | AT [cmds] S46=n [cmds] | ||
Description: | Selects active error correction and compression protocols | ||
Command | Function | ||
S46=136 | LAP-M only, no compression | ||
S46=138 | LAP-M with V.42bis data compression |
EXTENDED RESULT CODES | ||
Type: | Register | |
Format | AT [cmds] S95=n [cmds] | |
Unit: | Bit-mapped | |
Description: | Reports result codes | |
Bit | Value | Function |
0 | 0 1 | CONNECT result code reports DTE speed. CONNECT result code reports line speed instead DTE speed. |
1 | 0 1 | Verbose CONNECT result codes display DTE or line speed only. Adds "/ARQ" to all verbose CONNECT result codes except "NONE." |
2 | 0 1 | CARRIER result codes disabled. CARRIER result codes enabled. |
3 | 0 1 | PROTOCOL result codes disabled. PROTOCOL result codes enabled. |
4 | 0 | Reserved |
5 | 0 1 | COMPRESSION result codes disabled. COMPRESSION result codes enabled. |
FEATURE NEGOTIATION OPTIONS | |||
Type: | Register | ||
Format: | AT [cmds] S48=n [cmds] | ||
Description: | Selects active error correction and compression protocols | ||
Command | Function | ||
S48=0 | Detection negotiation disabled, XID negotiation disabled | ||
S48=7 | Detection negotiation and XID negotiation enabled | ||
S48=128 | Fall-back to options set in S36 |
FLOW CONTROL | |
Type: | Register |
Format | AT [cmds] S39? [cmds] |
Description: | Displays the current flow control |
Value | Meaning |
0 | Flow control disabled |
3 | RTS/CTS flow control enabled |
4 | XON/XOFF flow control enabled |
5 | Transparent XON/XOFF flow control enabled |
6 | Hardware and software flow control enabled |