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.