3Com Impact IQ 3C882 User Manual page 6

7
T
ROUBLESHOOTING
Checking the Basics 7-1
Monitoring LEDs 7-2
Monitoring the TEST LED 7-2
Monitoring the D Channel LED 7-2
Monitoring the B Channel LEDs 7-3
Evaluating Symptoms and Solutions 7-3
Using On-Line Help 7-5
Finding More Information 7-5
Contacting Technical Support 7-5
Downloading Firmware to Your 3C882 ISDN Modem 7-5
A
O ISDN S
RDERING
Placing the ISDN Order Through 3Com A-1
Placing the ISDN Order Through Your Telephone Company A-1
AT&T 5ESS Switch NI1 A-3
AT&T 5ESS Custom Switch A-4
NorthernTelecomDMS 100 Switch A-5
Siemens EWSD Switch A-6
B
AT C
OMMANDS
S R ,
EGISTERS AND
AT Command Set B-1
S Registers B-4
Result Codes B-8
C
S
PECIFICATIONS
3C882 ISDN Modem Specifications C-1
RS-232 COM Port Pin Specifications C-2
PC Serial Cable Pin Specifications C-3
Macintosh Serial Cable Pin Specifications C-3
D
C
ONFIGURATION
Configuration Using DOS D-1
ERVICE
,
R C
ESULT ODES
U DOS
SING