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Installing Adjuncts
■ MTR Interface (MTRI)
■
Off-Premises Extension Unit (OPX)
■
System 25 Direct Extension Selector (DXS)
See Table 3-1 for additional notes on unsupported telephones and adjuncts.
Table 3–1. Unsupported Telephones and Adjuncts
Model
Notes
51013 Personal Terminals
Digital Communications Protocol (DCP)
DCP telephones
7400 telephones and adjuncts (asynchronous data units
and multiple asynchronous data units) that use DCP
and
are supported on the MERLIN II Communications System
MET telephones
Multibutton electronic telephones (METs) and adjuncts
used with the Dimension PBX and Horizon systems
Single-line telephones (with
Message light does not work.
neon message-waiting lights)
Analog telephone adjuncts
Basic telephone modem interface (BTMI); BTMI-2; off-
premises extension (OPX) unit; System 25 Direct
Extension Selector (DXS); DSS attached to a 34-button
Deluxe membrane
Single-Line Telephones
Releases prior to Release 3.0 system support the single-line telephones listed
in Table 3–2.
3-40 Installing Telephones and Adjuncts