Nortel Networks Circuit Card 311 User Manual

Page 959

Functional description

959

DPNSS/DCHI Port

The mode of operation of the DCH-PORT is controlled by a switch setting
on the NTAK09/NTBK50. For DPNSS the switch is ON; for DCHI it is OFF.

The port operates at:

Data Rate

56kbps, 64kbps

Duplex

Full

Clock

Internal / External

Interface

RS422

The address of ports is selected by hardwired backplane card address. Port
characteristics and LAPD parameters are downloaded from software.

The mode of operation of the DCH-PORT is controlled by a switch setting
on the NTAK09/NTBK50. For DPNSS the switch is ON; for DCHI it is OFF.

The port operates at:

Data Rate

56kbps, 64kbps

Duplex

Full

Clock

Internal / External

Interface

RS422

The address of ports is selected by hardwired backplane card address. Port
characteristics and LAPD parameters are downloaded from software.

The mode of operation of the DPNSS/DCHI-PORT is controlled by a switch
setting on the NTAK09 and NTBK50 trunk cards. For DPNSS, the switch is
set to ON. For DCHI, set the switch to OFF.

The port operates with the following specifications:

•

data rate of 56 kbps or 64 kbps

•

full duplex

•

internal/external clock

•

RS422 interface

The address of a port is determined by the hardwired backplane card
address. Port characteristics and LAPD parameters are downloaded from
software.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311

01.04

Standard

Release 5.0

23 May 2008