Ds-30X Interface; Signaling Interface - Nortel Enterprise 1000 Reference Manual

DS-30X interface

The NTAK10 card interfaces to one DS-30X bus which contains 32 byte-
interleaved timeslots operating at 2.56 Mb. Each timeslot contains 10 bits in
a 10 message format; eight are assigned to voice/data (64 Kbps), one to
signaling (8 Kbps), and one is a data valid bit (8 Kbps).
DS-30X microprocessor
The 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 passing
these 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 functions

Signaling interface

Interconnections
The external connection is through a 50-pin MDF connector with the
NTBK05 carrier cable A0394217.
Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
NTAK10 2.0 Mb DTI card Page 149 of 236