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SX-200 General Information Guide
90 Revision A 50003510
DSS/BLF Interface Unit
The Direct Station Select/Busy Lamp Field (DSS/BLF) Interface Unit allows you to associate
up to two Mitel Networks Programmable Key Module 48 devices with an attendant console.
Each PKM 48 provides the attendant console user with 48 DSS/BLF keys (busy lamp field
appearance keys for the associated extension numbers).
The DSS/BLF Interface Unit uses a separate line connection to a DNIC port. You attach the
PKM 48 devices to the DSS/BLF Interface Unit and associate the PKM 48 devices with the
attendant console through Customer Data Entry (CDE).
DSS/BLF Interface Unit