Panasonic Digital Business System Installation Manual
Also see for DBS 128: Overview
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Contents
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Panasonic Digital Business System - Installation ManualMarch 1997 Issue 514Piggy-Back ConnectionsThe DBS can be used a host or subsidiary system. As a subsidiary system piggy-backed from the extension portsof a host PBX the connection from the host is presented as a series of exchange lines to the DBS. The DBS isthen configured through programming to use those ports as piggy-backed lines and will provide recall signalling tothe host.The DBS can be configured to provide earth or timed break recall signalling to the PBX. Timed break will operateon the wiring from the PBX extensions. Earth recall will require the connection of an earth wire from the PBX earthpoint to the PBX EARTH connection point on left hand end of the DBS MDF.If an earth connection is required to the DBS this must also be carried across to the EXT/LINE slot wiring using aDDK to DDK jumper wire so that any PBX extensions connected there can also send earth recall. The followingdiagram shows the location of the connection points on the DBS CCUs.Figure 7 - PBX Earth Connection PointsExchange Line / PBX Extension WiringUse each DDK to connect two circuits as shown.Figure 8 - Exchange Line / PBX Extension Connection |
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