Nortel 1000M Overview

Also see for Succession 1000M: Implementation guide Installation and configuration Installation and commissioning Description, installation, and maintenance Installation and configuration

Hardware architecture 41The cCNI Transition cards provide the cable connections to the 3PETermination Panel at the back of the module. A cCNI Transition cardis mounted directly behind each cCNI card (on the back of the Corebackplane). Four cCNI Transition cards for Core/Net module are installedin the factory regardless of how many cCNI main cards are configured forthe system.Network interfaceNetwork switching, based on digital multiplexed loops, interconnectsperipheral ports. A loop transmits voice, data, and signaling informationover a bidirectional path between the network and peripheral ports.Network cards digitally transmit voice and data signals, using spaceswitching and Time Division Multiplexing (TDM) technology. Networkswitching also requires service loops (such as conference and TDS loops),which provide call progress tones and outpulsing.The following cards provide basic network switching control:• The NT8D04 Superloop Network card provides switching for four loopsgrouped together in an entity called a superloop.• The NT5D12 Digital Trunk card provides switching for two DTI/PRI loopsand takes one network slot.• The NT5D97 Digital Trunk card provides switching for two DTI2/PRI2loops and takes one network slot.The NT5D12 and NT5D97 Digital Trunk cards replace the functionality ofthe QPC720 DTI/PRI and QPC414 Network card, which provided switchingfor two loops.Network organizationNetwork loops are organized into groups. A system is generally configuredas one of the following:• a half group system (CS 1000M HG) that provides up to 16 loops• a single group system (CS 1000M SG) that provides up to 32 loops• a multi-group system (CS 1000M MG) that provides up to 256 loopsThe Fiber Junctor Interface (FIJI) cards in the Network modules areconnected with fiber-optic cables to form a Dual Ring Fiber Network. Thisnetwork consists of two separate rings: one ring connects all the Networkshelf 0s while the second ring connects all the Network shelf 1s. Thisnetwork communicates on a subset of the Sonet OC12c protocol (622 MBbandwidth on each ring).Nortel Communication Server 1000Communication Server 1000M and Meridian 1 Large System OverviewNN43021-110 01.03 StandardRelease 5.0 18 February 2008Copyright © 2003-2008, Nortel Networks.