164
C
HAPTER
9: 3C
OM
L
EGACY
L
INK
C
ARDS
information on the number of Legacy Link cards supported by an NBX
system.
■
Each card supports up to 16 handsets and is rated at 2 REN per port.
Each card can support up to 8 fax devices.
■
You must have an analog telephone for each extension that is to be
connected. The maximum loop length for an analog telephone line is
2500ft/750m.
■
Legacy Link Analog Cards support these devices and features:
■
Modems
■
Payphones that require metering pulses
■
Pulse (loop disconnect) dialing - only tone (DTMF) dialing is
supported
■
Non-Bellcore Caller ID
■
Message Waiting Indicator (neon lamp) and a stutter dial tone for
message waiting indication
■
The Legacy Link Cards take an external power supply, which is shipped
with the card, to supply power to the telephones. Before you install
the card in the NBX chassis, be sure you have an AC power point
(preferably UPS-protected) within 5 feet of the installation location.
■
NBX chassis: Install no more than two 3Com Legacy Link Cards in an
NBX chassis. If additional 3Com Legacy Link Cards are required, use
additional NBX chassis.
■
The 3Com Legacy Link cards do not support compression. Voice traffic
between a legacy handset and an NBX device that supports
compression will be uncompressed.
3Com Legacy Link
Meridian Card
The 3Com Legacy Link for Meridian Card enables the an NBX system to
support legacy Meridian handsets. Each Legacy Link for Meridian Card
supports up to 16 handsets. The card connects to the Meridian handsets
using the existing telephone wiring, punchdown blocks, and connectors.
Legacy Link Meridian Card Installation Notes
■
Legacy Link Cards require NBX system software version R4.1.6 or
higher.
■
You must install a license on your NBX system before the system will
recognize Legacy Link Cards. See
“NBX Licensing”
on
page 56
for
Содержание NBX
Страница 20: ...20 ABOUT THIS GUIDE ...
Страница 78: ...78 CHAPTER 1 INTRODUCTION ...
Страница 120: ...120 CHAPTER 2 INSTALLING SYSTEM HARDWARE COMPONENTS ...
Страница 142: ...142 CHAPTER 4 ANALOG LINES ...
Страница 162: ...162 CHAPTER 8 T1 DIGITAL LINE CARD ...
Страница 192: ...192 CHAPTER 10 CONFIGURING IP TELEPHONY ...
Страница 198: ...198 CHAPTER 11 TROUBLESHOOTING ...
Страница 222: ...222 APPENDIX A SPECIFICATIONS ...
Страница 228: ...228 APPENDIX B CIRCUIT PROVISIONING ...