Four-wire digital interface – Polycom SpectraLink SCM408 User Manual
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SpectraLink 6100 MCU: Installation and Operation: SpectraLink 6000 System
PN: 1725-36097-001_L.doc
22
Four-wire digital interface
The wiring diagram below shows the connections required for a four-
wire interface . Each MCU of this type requires two demarcation
blocks which will be wired as indicated.
Four-wire Digital Connection
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