ZOOM TELEPHONICS, INC.
28.8K EXTERNAL V.34
|
Card Type |
Modem, Fax |
|
Chip Set |
Unidentified |
|
I/O Options |
Line in (RJ-11), line out (RJ-11), DTE (25-pin serial connector) |
|
Maximum Modem Rate |
28.8Kbps |
|
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 |
|
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 connector (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 |
|
14.4 |
Unidentified |
On |
Modem connected at 14.4Kbps |
|
14.4 |
Unidentified |
Off |
Modem not connected at 14.4Kbps |
|
V.34 |
Unidentified |
On |
Modem not connected in V.34 mode |
|
V.34 |
Unidentified |
Off |
Modem connected in V.34 mode |
|
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 |
|
MR |
Unidentified |
Blinking |
Modem is in self-test mode |
|
SUPPORTED COMMAND SET |
|
Basic AT Commands |
|
AT, A/ |
|
A, B, E, H, M, O, P, T, V, W, Z |
|
&C, &K, &M, &T, &V, &W, &Y, &Z |
|
Extended AT Commands |
|
%C, %L, %Q |
|
\A, \B, \G, \L, \N |
|
)M |
|
*H |
|
-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 |
|
í &D0 |
Modem does not respond to DTR |
|
&D1 |
Modem goes to command mode after DTR goes is off |
|
&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 |
|
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@ |
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 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 |
|
SELECT CALL PROGRESS RESULT CODES | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Xn [cmds] |
|
Description: |
Enables selection of tone detection and associated result code format options |
|
Command |
Function |
|
X0 |
Sends OK, CONNECT, RING, NO CARRIER, ERROR, and NO ANSWER |
|
X1 |
Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, and CONNECT speed |
|
X2 |
Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, CONNECT speed and NO DIALTONE |
|
X3 |
Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, CONNECT speed and BUSY |
|
í X4 |
Sends all responses |
|
SPEAKER VOLUME | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] Ln [cmds] |
|
Description: |
Controls speaker volume |
|
Command |
Function |
|
L0 |
Low volume setting |
|
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 |
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 |
|
%E2 |
Auto-fallback/fall-forward enabled |
|
%E3 |
Auto-retrain and fast hang up enabled |
|
TRANSMISSION LEVEL - CELLULAR | |
|
Type: |
Configuration |
|
Format: |
AT [cmds] @Mn [cmds] |
|
Range: |
11-31 |
|
Unit: |
-1 dBm |
|
Description: |
Sets the signal level for transmission over cellular communications |
|
Command |
Function |
|
í @M0 |
-26 dBm |
|
@M1 |
-30 dBm |
|
@M2-@M10 |
-10 dBm |
|
@M11 |
-11 dBm |
|
@M12 |
-12 dBm |
|
@M30 |
-30 dBm |
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/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 | ||
|
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. |
|
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 |
