NTAK93 D-channel Handler Interface daughterboard Page 755 of 894

The port will operate at:

Data Rate

56kbps, 64kbps

Duplex

Full

Clock

Internal / External

Interface

RS422

 

 

The address of ports is selected by hardwired backplane card address. Port characteristics and LAPD parameters are downloaded from software.

D-Port — SDTI/PRI interface

Below is a brief description of signals. When connected to SDTI/PRI, DCHI-PORT is considered Data Terminal Equipment (DTE):

SDA, SDB: Transmit Clock provided by SDTI/PRI

RTA, RTB: Receive Clock provided by SDTI/PRI

RR, CS: SPDC ready signal provided by DCHI-PORT

TR: D-PORT ready signal provided by DCHI-PORT

RDA, RDB: Incoming serial data bit stream, driven by SDTI/PRI

SDA, SDB: Transmit serial data bit stream driven by DCHI-PORT

Circuit Card Description and Installation

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Image 755
Nortel Networks 553-3001-211 manual Port SDTI/PRI interface