1–6 ROLMphone 300/600 User Guide
Options
The ROLMphone 600 series telephones are modular
and support options for data communications, a head-
set/recorder connection, or additional keys. The Data
Communications Option (DCO), the Headset/Re-
corder Option (HRO), the Electret Headset Option
(EHO), and the Analog Adapter Option (AAO) fit
into recessed module bays on the bottom of the tele-
phone. The Keyboard Expansion Option (KEO) plugs
into a connector provided in one of the bays. The
DCO, EHO, HRO, and AAO may be installed in ei-
ther module bay. Once the KEO is installed, any of
the other options may be installed in the
module bay that has the KEO connector.
Figure 1–4. DCO/HRO Module Bays and KEO Connector
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