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Single-pair cable allows for bi-directional data transmission or ping-pong transmission
On-board modem
Two-Way Speakerphone
Flash Voice Mail is compatible with DR5 systems (3x8
adding support for 4 more CO lines
ShoreTel ShoreGear SG-90 Voice Switch Unit (Refurbished) 4-Line Phones Single-pair cable allows for bi-directionalKey Features: Mfr. Part #: SG 90 2 RJ 45 local area network (LAN) connectors 1 3. 5 mm stereo input for connecting a music on hold source 1 3. 5 mm stereo output for connecting to a overhead paging system or night bell 8 loop start trunks (FXO) 1 RJ 21X port for punchdown block, patch panel, or 12 port harmonica connector 4 telephone ports (FXS) 1 DB 9, RS 232C maintenance port for serial communications Condition: Refurbished
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