Nortel Networks 553-3001-211 manual Interconnections, Cept interface

Page 714 of 894 NTAK10 2.0 Mb DTI card

•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.

CEPT interface

For the Conference of European Postal Communications (CEPT) interface, the connection to the external digital carrier is through the NT5K85 DTI cable assembly. It converts the 120 ohms D-connector to 75 ohms coaxial cable.

The impedance is switch set. The switch-settings table at the end of this chapter describes the options. See Table 230.

553-3001-211 Standard 2.00 September 2004