Functional Description - Avaya Nortel Communication Server 1000 Reference

NTBK50 2.0 Mb PRI card

Functional description

NTBK50 provides the following features and components:
• recovery of the 2.048 kbps data by the CEPT receiver, at signal levels which are
attenuated by up to 10 dB
• control of CEPT line density using HDB3 which provides 64 kbps clear channel
• performance monitoring of the receive carrier by means of Bipolar Violations (BPV), Slips,
CRC-4 (CRC), and Frame Bit Errors (FBER)
• monitoring of receive carrier alarms including AIS, LOS, and RAI
• transmission of remote alarm when instructed
• slip-buffering receive messages
• support of National and International bits in timeslot 0
• clock controller daughterboard
• D-channel interface daughterboard
• downloadable D-channel handler daughterboard
• 32 software-selectable Tx and Rx Pad values
• conversion of PCM commanding Laws (A-A, u-u, A-u, u-A)
• Card-LAN for maintenance communication
Architecture
The main functional blocks of the NTBK50 architecture are:
• DS-30X interface
• A07 signaling interface
• digital pad
• carrier interface
• CEPT transceiver
• SLIP control
• D-channel support interface
• clock controller interface
554 Circuit Card Reference
Comments? infodev@avaya.com
July 2011