3Com DIGITAL MODEM User Manual page 4

Using the Phone Out Port 2-17
Placing Calls Using the Phone Out Port 2-18
Receiving Calls Using the Phone Out Port 2-18
Protocol Support 2-19
Async-Sync PPP Conversion 2-19
QuickSelect 2-19
3
T
ROUBLESHOOTING
Troubleshooting Tips 3-1
Downloading Firmware to Your External Digital Modem 3-5
A
AT C
OMMAND
B
AT C
OMMANDS
AT Command Set for the 3Com Impact
Digital Modem B-1
AT Command Set for Internal Analog Fax Modem B-4
Remote S Registers B-7
Digital Modem Result Codes B-10
C
T
ECHNICAL
On-line Technical Services C-1
3Com Bulletin Board Service C-1
World Wide Web Site C-2
Ask3Com on CompuServe C-2
3ComFacts Automated Fax Service C-2
Support from Your Network Supplier C-3
Support from 3Com C-4
Returning Products for Repair C-4
L W
IMITED
FCC C
LASS
C
ANADIAN
S O
ET VERVIEW
, R
EGISTERS
S
UPPORT
ARRANTY
B C
ERTIFICATION
N
OTICE
, R
AND ESULT
S
TATEMENT
C
ODES