Maintenance facility for telephony system with remote port group

Details Maintenance facility for telephony system with remote port group Maintenance facility for telephony system with remote port group

1981-10-13

1983-06-07

Robinson, Thomas A.

179 18EE, G06F 1516, H04M 322, H04Q 1104

Patent

active

043872786

ABSTRACT:
A telephony network with a digital central office and a one or more remotely located digital satellite units. Each digital satellite unit connects to a number of remote subscriber lines and monitors these lines to establish communications through interconnecting spans and a digital satellite interface at the digital central office. The digital satellite interface includes a programmed controller that communicates with the remote digital satellite units connected to it, with call processing equipment in the digital central office and with maintenance processing equipment in the digital central office. Communications with the maintenance processor are in the form of messages having a header byte and a byte indicating the length of the message. During network initialization and various recovery operations, the programs and/or the data base can be transferred from the maintenance processor to each digital satellite interface through the use of these messages.

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