DMS-100
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The DMS-100 is a member of the Digital Multiplex System product line of telephone exchange switches manufactured by Northern Telecom. Designed during the 1970s and released in 1979, it can serve up to
Typical Northern Telecom DMS-100 Telephone Central Office Installation
A DMS-100, in a central office located in France
Northern Telecom DMS-100 Line Card Drawer showing line cards.
DMS-100 Peripheral Configuration
ISDN
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Integrated Services Digital Network is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the pub
ISDN telephone
A decommissioned BT ISDN 2e box