3Com OfficeConnect 3C892A, Руководство пользователя, Страница: 12 / 130

7
S
UPPLEMENTARY
V
OICE
C
ALL
S
ERVICES
Supplementary Voice Services 81
Before You Begin 81
Call Waiting and Call Hold 81
Call Hold 81
How to Use Call Waiting 81
Disconnecting a Call on Hold 82
Calling Line Identification Restriction 83
Permanent Configuration 83
Malicious Call Identification (MCID) 83
8
P
LACING
, R
ECEIVING AND
D
ISCONNECTING
C
ALLS
Placing Calls 85
Placing a Call Automatically 85
Telephone Number Selection for Data Calls 85
Call Routing Among Service Providers 85
Placing a Call Manually 85
Placing a Call Manually to an Existing Service Provider 86
Placing a Call Manually to a Temporary Service Provider 86
Participating in a Temporary Call 87
Placing Multilink PPP Calls 87
Receiving Calls 87
Receiving Data Calls 87
Distinctive Ringing 88
Disconnecting Data Calls 88
Disconnecting Data Calls Manually 88
Disconnecting Calls Automatically Using Timers 89
Minimum Call Duration 89
Idle Timeout 89
Bandwidth on Demand Parameters 89
Connect/Disconnect threshold for the second B channel 89
9
T
ROUBLESHOOTING AND
M
AINTENANCE
Checking the Basics 91
Monitoring LEDs 92
Monitoring the ALERT LED 92
Monitoring the ISDN LED 92
Monitoring the
B Channel LEDs 92
Monitoring the LAN Port Status LEDs 92
Troubleshooting Problems Indicated by LEDs 93
Evaluating Symptoms and Solutions 94
Finding More Information 98
Contacting Technical Support 98
Downloading Firmware to Your ISDN LAN Modem 98
Resetting the ISDN LAN Modem 98