Modular networking switch system for a distributive wide area transmission trunked communication system
US5440759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modular networking switch system for a land mobile transmission trunked communication system provides transmission trunked communications with a plurality of transceivers and networks the plurality of transceivers with remote transcievers in one or more external communication networks. The networking switch system comprises a plurality of channel interface modules (CIM), at least one telephone interface module (TIM), a system network module (SNM), a pulse code modulated (PCM) bus system, a control bus system separate from the PCM bus system, and a system management module (SMM). Each CIM interfaces with a repeater system that provides transmission trunked radio communications on preassigned radio channels between the repeater system and at least one of the plurality of transceivers. Each TIM interfaces with an external telephone communication network that provides a full duplex telephone communication between a remote transciever and the TIM. The SNM interfaces the networking switch system with other external networking switch systems that provide transmission trunked radio communications to establish a wide area network transmission trunked communication system. The PCM bus syst…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.