Functional description 959
DPNSS/DCHI Port
The mode of operation of the DCH-PORT is controlled bya switch setting
on the NTAK09/NTBK50. For DPNSS the switch is ON; forDCHI 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 bya switch setting
on the NTAK09/NTBK50. For DPNSS the switch is ON; forDCHI 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 bya switch
setting on the NTAK09and 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 23May 2008
Copyright© 2003-2008, Nor tel Networks
.