NTAK10 2.0 Mb DTI card Page 149 of 236Succession Communication Server for Enterprise 1000 Circuit Card Reference GuideDS-30X interfaceThe NTAK10 card interfaces to one DS-30X bus which contains 32 byte-interleaved timeslots operating at 2.56 Mb. Each timeslot contains 10 bits ina 10 message format; eight are assigned to voice/data (64 Kbps), one tosignaling (8 Kbps), and one is a data valid bit (8 Kbps).DS-30X microprocessorThe DS-30X is a utility processor, responsible for the following tasks:• controlling the DS-30X interface• receiving and decoding of messages and taking appropriate action• transmitting TS16 messages to the TS16 microprocessor• receiving TS16 messages from the TS16 microprocessor and passingthese messages to the A07• providing the 19.2 Kbps serial interface to the Card-LAN• controlling LEDs• downloading Local Calling Areas (LCAs)• monitoring errors and alarms• detecting the change of state in TS0, and outputting TS0 data• counting bipolar violations, slips, PLL alarms, frame-alignment errors,and CRC-4 errors• monitoring the status of frame alignment and multiframe alignment• detecting and reporting of alarm indication signals (AIS)• updating of per channel loopback registers• controlling the far-end loopback and digroup loopback functionsSignaling interfaceInterconnectionsThe external connection is through a 50-pin MDF connector with theNTBK05 carrier cable A0394217.
