Polycom Vortex EF2280 Reference Manual page 12

Terminating the
EF2280
Connecting the
EF2280 with Other
EF Devices
V EF2280 Reference Manual
ORTEX
5. Connect another Cat-5 cable between the EF B
the EF B I of the third device, and so on.
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6. Terminate the chain of EF2280s using the instructions below.
7. Power on all units at the same time
The EF2280 must be terminated with the provided EF Bus terminator. Place a termi-
nator in the EF B I of the first device in the chain and also in the EF B
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the last device. If you lose the terminator provided with your EF2280 unit, see "Mak-
ing an EF Bus Terminator" on page 50 for information and instructions on how to
make one.
EF Bus Terminator
Cat-5 cable
Cat-5 cable
Cat-5 cable
EF Bus Terminator
Figure 7. Connecting and terminating multiple EF2280s.
The EF2280 does not have to be terminated if you are using a single unit not con-
nected together with another EF2280.
If you are linking multiple EF2280s, you must use the EF bus to link the EF2280s to
each other. If you are linking a EF2280 to other EF devices, such as the EF200 Phone
10
I
NSTALLATION
O of the second device and
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Technical Support: 800.932.2774
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UT