Black Box CONFERENCE 1 PHONE, Руководство пользователя

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CHAPTER 3: Installation
3.4.6 C
ONNECTING TO A
D
IGITAL
T
ELEPHONE
S
YSTEM
Many businesses and other large sites don’t use standard analog phone lines.
Instead, they use digital phone systems that route calls through a PBX (private
branch exchange). If you have to dial “9” or some other digit to reach an outside
line at your site, you probably have a digital system, but check just to make sure. If
you do have digital (PBX) telephone service, you’ll need a digital-to-analog
telephone-line converter in order to use the Conference 1. We offer several of
these converters; at the time of this writing, one that we recommend (and that is
specially designed for use with conference phones) is the Conference Linc Up,
product code MC117A. Be aware that any such converter will degrade the sound
quality of your conversations.
To connect your Conference 1 to a digital telephone system, take these steps,
referring to Figure 3-8 on the next page:
1. Follow the instructions in the digital-to-analog converter’s manual for
connecting the converter to one of the digital telephones connected to your
PBX system. Make sure to use the proper impedance setting. (Most converters
have a four-position switch to match the converter’s impedance with that of
the type of digital phone you’re using. Your converter’s manual should tell
you which setting to use.)
2. The Conference 1’s power supply has three cords attached to the
transformer. Take the one terminated with an RJ-11 plug and plug it into the
jack on the digital-to-analog converter.
3. Plug the power supply’s long base-unit cord—the one terminated with an
RJ-45 plug—into the LINE jack on the Conference 1 base unit.
4. Plug the power-supply’s AC-input cord into a working standard 120-VAC
electrical outlet. (If the outlet is controlled by a wall switch, turn it on.) The
Conference 1 should play a sequence of self-test sound effects to indicate that
it’s receiving power.
5. Lift the digital phone’s handset. Press the Conference 1’s ON/OFF button to
check for a dial tone. If you hear a dial tone, the Conference 1 is ready for
operation. (If you don’t, consult the digital-to-analog converter’s manual; also
see
Section 5.2 .) Turn the Conference 1 back off and hang up the handset.
To make a call once you’ve installed the Conference 1, lift the digital phone’s
handset and dial the number on the digital phone
before you turn on the
Conference 1. After you dial, turn on the Conference 1 by pressing its ON/OFF
button. Leave the digital phone’s handset off the hook during the call. To end the
call, hang up the handset.