Browse Prior Art Database

Adapter for Connecting a Multipoint Modem Network to the Public Switched Network

IP.com Disclosure Number: IPCOM000059602D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Cholat-Namy, J Lenoir, B [+details]

Abstract

In the multipoint modem network shown in Fig. 1, the host computer communicates on leased lines L1a and L1b with several remote Data Terminal Equipments (DTEs) through the intermediary of a primary modem CTL at one end and tributary modems T1, T2 and T3 at the other end arranged in a multipoint configuration. If one of the links to the tributary modems fails, such as the connection with T3 indicated by a cross in Fig. 1, a solution is to connect modem T3 directly on the public switched network by lines L2a and L2b. On the host computer side, the best way is to use a special modem MSP which is connected between the switched network and the host computer.