Nortel Networks Circuit Card 311 - Manual (Page 975)

Architecture 975
• 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 communications
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
• Card-LAN / echo / test port interface
• 80C51FA Microcontroller
The main functional blocks of the NTBK50 architecture include:
• DS-30X interface
• A07 signaling interface
• digital pad
• carrier interface
• CEPT transceiver
• SLIP control
• D-channel support interface
• clock controller interface
• Card-LAN / echo / test port interface
• 80C51FA Microcontroller
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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