3COM CORPORATION
COURIER V.34 FAX (EXTERNAL)
|
Card Type |
Fax, Modem (synchronous/asynchronous) |
|
Chip Set |
U.S. Robotics |
|
Maximum Data Rate |
28.8Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
External |
|
Fax Class |
Class I & II |
|
Data Modulation Protocol |
Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.25bis, V.32, V.32bis, V.34 Rockwell V.FC U.S. Robotics HST, V.32terbo |
|
Fax Modulation Protocol |
ITU-T V.17, V.21, V.27ter, V.29 |
|
Error Correction/Compression |
HST, MNP5, V.42, V.42bis |

|
CONNECTIONS | ||||||
|
Function |
Label |
Function |
Label | |||
|
RS-232/422 |
CN1 |
DC power |
CN4 | |||
|
Line out |
CN2 |
Voice/Data switch |
SW2 | |||
|
Line in |
CN3 |
Power switch |
SW3 | |||
|
USER CONFIGURABLE SETTINGS | ||
|
Setting |
Label |
Position |
|
í DTR normal |
SW1/A |
Off |
|
DTR forced high |
SW1/A |
On |
|
í Verbose (word) format enabled |
SW1/B |
Off |
|
Numeric format enabled |
SW1/B |
On |
|
í Result code display enabled |
SW1/C |
On |
|
Result code display disabled |
SW1/C |
Off |
|
í Local echo enabled |
SW1/D |
Off |
|
Local echo disabled |
SW1/D |
On |
|
í Auto-answer disabled |
SW1/E |
On |
|
Auto-answer enabled, off-hook on first ring |
SW1/E |
Off |
|
í CD normal |
SW1/F |
Off |
|
CD forced high |
SW1/F |
On |
|
í Result code display enabled in both originate and answer mode |
SW1/G |
Off |
|
Result code display enabled in originate mode only |
SW1/G |
On |
|
í Smart mode |
SW1/H |
On |
|
Dumb mode |
SW1/H |
Off |
|
í Escape code response: modem goes on-hook, off-line command mode, returns ‘NO CARRIER’ |
SW1/I |
Off |
|
Escape code response: modem stays on-line, on-line command mode, returns ‘OK’ |
SW1/I |
On |
|
í Reset and load from profiles in NVRAM |
SW1/J |
Off |
|
Reset and load from factory settings in ROM |
SW1/J |
On |
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
HS |
Red |
On |
Modem is operating at 2400bps or faster |
|
HS |
Red |
Off |
Modem is operating at slower than 2400bps |
|
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 |
Red |
On |
Power is on |
|
MR |
Red |
Off |
Power is off |
|
RS |
Red |
On |
Modem sends RTS signal |
|
RS |
Red |
Off |
RTS forced low during receive data hardware flow control |
|
CS |
Red |
On |
Synchronous transmission or before CTS forced low during transmit hardware flow control |
|
CS |
Red |
Off |
Modem doesn’t send CTS to remote |
|
SYN |
Red |
On |
Modem in synchronous mode |
|
SYN |
Red |
Off |
Modem not in synchronous mode |
|
SYN |
Red |
Blinking |
Dial security enabled |
|
ARQ/FAX |
Red |
On |
Modem is connected in ARQ mode |
|
ARQ/FAX |
Red |
Off |
Modem is not connected in ARQ mode |
|
ARQ/FAX |
Red |
Slow blink |
Data being retransmitted |
|
ARQ/FAX |
Red |
Fast blink |
Modem is connected in FAX mode |
Proprietary AT Command Set
See document V2007 for a full command summary.