118
C
HAPTER
2: I
NSTALLING
S
YSTEM
H
ARDWARE
C
OMPONENTS
The paging connector on the NCP is an RJ-11 connector. It is a line-out,
600 ohm audio interface with a dry contact closure for use with an
external paging amplifier (
Table 26
).
Configuring
Routing Devices
If you have a low-bandwidth device on the LAN, such as an ISDN router,
you must update the device’s routing table to filter NBX system multicast
addresses. The NBX system uses Ethernet multicast addresses to
implement some system features.
If you have telephones connected to the network through a
low-bandwidth link, such as an ISDN connection, you can configure them
so that they do not generate multicast traffic (
Table 27
). For more
information, see the
NBX Administrator’s Guide
. You must still filter
multicasts to ensure that multicasts generated by other NBX devices are
not propagated through the low-bandwidth link.
Table 26
Paging Amplifier Connector
Pin 1
Not connected
Pin 2
Relay common
Pin 3
Ring
Pin 4
Tip
Pin 5
Relay contact
Pin 6
Not connected
Table 27
Layer 2 Multicast Addresses
Multicast Address
Description
01:e0:bb:00:00:1d
System state
01:e0:bb:00:00:15
Music on hold
01:e0:bb:00:00:11
Page
01:e0:bb:00:00:25
01:e0:bb:00:00:35
01:e0:bb:00:00:31
01:e0:bb:00:00:39
Conference call channel 0
Conference call channel 1
Conference call channel 2
Conference call channel 3
01:e0:bb:00:00:09
Download service
01:e0:bb:00:00:01
01:e0:bb:00:00:05
01:e0:bb:00:00:0d
Paging audio 1
Paging audio 2
Paging audio 3
Summary of Contents for V3000 ANALOG
Page 20: ...20 ABOUT THIS GUIDE ...
Page 80: ...80 CHAPTER 1 INTRODUCTION ...
Page 120: ...120 CHAPTER 2 INSTALLING SYSTEM HARDWARE COMPONENTS ...
Page 142: ...142 CHAPTER 4 ANALOG LINES ...
Page 162: ...162 CHAPTER 8 T1 DIGITAL LINE CARD ...
Page 192: ...192 CHAPTER 10 CONFIGURING IP TELEPHONY ...
Page 198: ...198 CHAPTER 11 TROUBLESHOOTING ...
Page 224: ...224 APPENDIX A SPECIFICATIONS ...
Page 230: ...230 APPENDIX B CIRCUIT PROVISIONING ...
Page 240: ...240 APPENDIX D OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS ...