MICROCOM, INC.
DESKPORTE 28.8P
|
Card Type |
Modem (synchronous/asynchronous) |
|
Processor |
Z80182 |
|
Processor Speed |
18.4MHz |
|
Chipset |
Microcom |
|
Maximum Onboard Memory |
32KB SRAM/128KB Flash ROM |
|
Maximum Data Rate |
28.8Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
Serial, parallel |
|
Fax Class |
Class I & II |
|
Data Modulation |
Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC |
|
Fax Modulation |
Unidentified |
|
Error Correction/Compression |
MNP5, MNP10, V.42, V.42bis |

|
CONNECTIONS | ||||||
|
Function |
Label |
Function |
Label | |||
|
Line out |
CN1 |
RS-232/422 port |
CN4 | |||
|
Line in |
CN2 |
DC power |
CN5 | |||
|
Parallel port |
CN3 |
Power switch |
SW1 | |||
|
DIAGNOSTIC LED(S) (POWER-UP) | |||
|
AA |
TM |
HS |
Condition |
|
Off |
On |
Off |
RAM test failed |
|
Off |
On |
Off |
Modem failed |
|
On |
On |
On |
CPU test failed |
|
Off |
Off |
Off |
All tests passed |
|
DIAGNOSTIC LED(S) (NORMAL OPERATION) | |||
|
LED |
Color |
Status |
Condition |
|
AA |
Unidentified |
On |
Auto-answer enabled |
|
AA |
Unidentified |
Off |
Auto-answer disabled |
|
AA |
Unidentified |
Blinking |
Phone is ringing |
|
RD |
Unidentified |
Blinking |
Modem is receiving data |
|
RD |
Unidentified |
Off |
Modem is not receiving data |
|
SD |
Unidentified |
Blinking |
Modem is transmitting data |
|
SD |
Unidentified |
Off |
Modem is not transmitting data |
|
CD |
Unidentified |
On |
Carrier signal detected |
|
CD |
Unidentified |
Off |
Carrier signal not detected |
|
OH |
Unidentified |
On |
Modem is off-hook |
|
OH |
Unidentified |
Off |
Modem is on-hook |
|
TR |
Unidentified |
On |
DTR signal is high |
|
TR |
Unidentified |
Off |
DTR signal is low |
|
TM |
Unidentified |
On |
Modem is performing self-test |
|
TM |
Unidentified |
2s blink |
RAM test failed |
|
TM |
Unidentified |
1s blink |
ROM test failed |
|
TM |
Unidentified |
2/3s blink |
Data pump test failed |
|
TM |
Unidentified |
Off |
Self-tests passed |
|
HS |
Unidentified |
On |
Modem is not connected or is connected at between 4800bps and 12Kbps |
|
HS |
Unidentified |
Blinking |
Modem is connected at 14.4Kbps or faster |
|
HS |
Unidentified |
Off |
Modem is connected at less than 4800bps |
|
SUPPORTED STANDARD COMMANDS |
|
Basic AT Commands |
|
+++, ‘comma’, A/ |
|
A, B, E, H, I, L, M, O, P, Q, T, V, W, X, Y, Z |
|
&D, &F, &G, &M, &P, &T, &W, &X, &Y, &Z |
|
Extended AT Commands |
|
\A, \B, \C, \E, \J, \N, \Q, \T |
|
%A, %C, %E, %F, %G |
|
Special AT Commands |
|
-J, *H, )M, @M, :E |
|
S-Registers |
|
S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S22, S23, S25, S26, S27 |
Note: See MHI documentation for complete information. |
Proprietary AT Command Set
|
DISPLAY BLACKLIST NUMBERS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] *N [cmds] |
|
Description: |
Displays the list of all the numbers on the blacklist (whether they are delayed/forbidden or not), and their statuses. |
|
DISPLAY DELAYED NUMBERS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] *D [cmds] |
|
Description: |
Displays the list of all delayed numbers and their statuses. |
|
DISPLAY FORBIDDEN NUMBERS | |
|
Type: |
Immediate |
|
Format: |
AT [cmds] *F [cmds] |
|
Description: |
Displays the list of all forbidden numbers and their statuses. |
|
CONNECT SPEED MATCHING | ||
|
Type: |
Configuration | |
|
Format: |
AT [cmds] %Ln [cmds] | |
|
Description: |
Selects whether the modem will attempt to match the connect speed of the remote modem. | |
|
Command |
Function | |
|
%L0 |
Modem will connect at speeds supported by the protocol selected only. | |
|
í %L1 |
Modem will match connect speeds. | |
|
%L2 |
Modem will connect only at current speed. | |
|
%L3 |
Modem will use V.8 automode with fallback to ITU-T automode to match speeds. | |
|
%L4 |
Modem will use V.8 automode to match speeds. | |
|
V.34 TRAINING RESPONSE | ||
|
Type: |
Register | |
|
Format: |
AT [cmds] :T42=n [cmds] | |
|
Description: |
Sets what speed the modem will choose after a V.34 train. | |
|
Command |
Function | |
|
í :T42=0 |
Standard speed selection. | |
|
:T42=1 |
Choose speed approximately 2 speeds faster than standard. | |
|
:T42=2 |
Choose speed approximately 1 speed faster than standard. | |
|
:T42=3 |
Standard speed selection. | |
|
:T42=4 |
Choose speed approximately 1 speed slower than standard. | |
|
:T42=5 |
Choose speed approximately 2 speeds slower than standard. | |
See MICROCOM, INC. DESKPORTE FAST for a full command summary.