Course Description:
This extensive course provides the skills required to perform maintenance and a high-degree of troubleshooting, and will walk the student through a practical understanding of the Nortel DMS-100200 switching system. It discusses the general system architecture used by all Digital Multiplex System switches, with functional block diagrams of the switch and its main modules, including the SNXA, CCS, IOD, and the various PM types related to trunks, including the DTC, DTCI, SPM, and other special trunk peripherals. The LCM line module used in DMS-100s is discussed briefly, which will demonstrate a simple PCM phone call, and how that call may traverse a trunk to an Access Tandem switch. Use and cabling of the MAP and RTIF terminals is explained, plus remote access through serial TTY. Alarm interpretation from the MAPCI is demonstrated, and how to interrogate alarms further, so the student can locate cards within the system. Log messages are used to lookup alarm descriptions, and form the basis for troubleshooting action. The Helmsman documentation viewer and NTPs are also covered in detail, with an emphasis on documents used for maintenance and troubleshooting procedures.
Previous troubles are reviewed and used as exercises, including TRKS (trunk) maintenance and TTP testing, but also parts of the SuperNodeXA-Core front-end (SN) including the Computing Module (CM), Network (NET), Message Switch (MS), and CCS modules. Peripheral Modules (PM),
and modules of particular interest to the students are emphasized. IOD maintenance is also discussed, including procedures to backup Program and Data stores, and a discussion of how hard disks, tape, and BMC devices are connected to the system. The greater SS7 network is also reviewed, and the role of an AT switch.
Our non-intrusive exercises equip the student to conduct day-to-day maintenance activities, perform troubleshooting procedures, and much more. The course is flexible, allowing the most important content for a particular group of students to be emphasized.
Students Will Learn:
Course Length:
5 Days
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