3Com NBX, Руководство по установке

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118 C
HAPTER
2: I
NSTALLING
S
YSTEM
H
ARDWARE
C
OMPONENTS
Connecting a
Music-on-Hold (MOH)
Input Device
Use a patch cord with phono-type connectors (stereo or mono) to
connect line level audio from any audio device that has a line-out jack to
the MOH jack on the front of the NCP. The audio input should be max 2V
peak to peak.
Adjusting Music-on-Hold (MOH) Volume
The NBX 100 and V5000 have an external control for adjusting the MOH
volume. For a V3000 or V3001R system, use the volume control on the
external MOH device.
To adjust the volume of music on hold on an NBX 100 or V5000:
1 Use a nonferrous (plastic or aluminum) adjustment tool to adjust the
volume control on the front of the Call Processor to about mid-range.
2 Use a 3Com Telephone to call another extension, and have the person
put you on hold.
3 While listening to the music, adjust the volume control on the
music-on-hold input device.
Connecting a Paging
Amplifier
Connect the paging device to the paging connector on the front of the
NCP. See the documentation for your paging amplifier for information
about that device. For information about how to page from a telephone
on the NBX system, see “Paging” in the
NBX Telephone Guide .
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
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