Nortel Networks 311 NTAK93 D-channel Handler Interface daughterboard

953
NTAK93 D-channel Handler Interface
daughterboard
Contents This section contains information on the following topics:
"Introduction" (page 953)
"Physical description" (page 955)
"Functional description" (page 956)
IntroductionThe NTAK93 provides the D-channel handler interfaces required by the
ISDN PRI trunk.
The DCHI performs D-channel Layer 2 message processing and transfers
Layer 3 signaling information between two adjacent network switches. It is
mounted on the NTAK091.5 Mb DTI/PRI card or the NTBK50 2.0 Mb PRI
card (installed in the Media Gateway) using standoff reference pins and
connectors. The NTAK93 daughterboard, when mounted on the NTBK50
PRI digital trunk card, is addressed in the same slot as the NTBK50. The
NTAK93daughterboard can use SDI I/O addresses 1 to 15 and port 1.The
NTAK93provides D-channel handler interfaces required by the ISDN PRI
trunk. It performs D-channel Layer 2 message processing and Layer 3
preprocessing. It is a daughterboard that mounts to the NTAK09 1.5 Mb
DTI/PRI card or NTBK50 2.0 Mb PRI card using standoff reference pins
and connectors.
The NTAK93D-channel Handler Interface (DCHI) daughterboard, mounted
on a DTI/PRI digital trunk card, interfaces with the CS 1000 SSC. The
DTI/PRI digital trunk card is installed in the Media Gateway. Digital trunk
cards are not supported in Media Gateway Expansions.
The NTAK93provides the D-channel handler interfaces required by the
ISDN PRI trunk.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
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