SBX 3 X 8 Card

Vertical SBX 3 X 8 Expansion Card The vertical 3 X 8 expansion provides expansion of three incoming lines X 8 digital telephones per card.

1 3 X 8 expansion card can be added to the SBX Basic KSU and two can be added to the Expansion KSU adding a total of 12 Lines in X 32 Telephones.

8 Hybrid ports are compatible with Vertical SBX digital phones and analog single line phones and fax machines.

The 3x8 Expansion Board can be installed on the CN2 connector of the MBU or EMBU, and provides three (3) CO/PBX Loop Start CO Line interfaces that support Pulse/DTMF signaling. Each interface contains ring and loop current circuits, A/D and D/A conversions, as well as pulse signaling circuitry.

This board also provides eight Hybrid ports (eight DKTs or eight SLT interfaces), and can detect FSK signal for incoming Caller ID, DTMF signal for incoming caller ID, and a call progress tone. It also provides three (3) on-hook connection paths for CID/SMS.