Nortel Networks Circuit Card 311 - Manual (Page 989)

989
NTBK51 Downloadable D-channel
Handler daughterboard
Contents
This section contains information on the following topics:
"Functional description" (page 1003)
"Physical description" (page 990)
"Functional description" (page 992)
"Download operation" (page 996)
Introduction
The NTBK51 daughterboard provides Downloadable D-channel Handler
(DDCH) interfaces based on the Multipurpose Serial Data Link (MSDL).
The DDCH provides a single purpose full-duplex serial port capable of
downloading the D-channel application and base software into the card.The
NTBK51 provides Downloadable D-channel handler (DDCH) interfaces
based on the Multipurpose Serial Data Link (MSDL). The DDCH provides a
single purpose full-duplex serial port capable of downloading the D-channel
application and base software into the card.
The NTBK51 daughterboard provides Downloadable D-channel Handler
(DDCH) interfaces based on the Multipurpose Serial Data Link (MSDL).
The DDCH provides a single purpose full-duplex serial port capable of
downloading the D-channel application and base software into the card.
The NTBK51 provides the following features and functions:
• ISDN D-channel related protocol
• Selftest
• Loopback
• D-channel loadware including:
— management and maintenance
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.