Website: http://www.btstraining.com
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Email: info@btstraining.com
Hands-On
CO Switch Decommissioning & Service Migration
Central Office
 
Course Description
Wireline switches are providing a special challenge today despite ongoing migration to triple-play and wireless technologies, there is still some resilient need for reliable, low-latency POTS telephone service. This requires continuing effort to find economical yet reliable ways to run the TDM switching network.

The CO Switch Decommissioning Service Migration Course has been designed by request to help telcos lower the cost of running existing plant as reliably and easily as possible. In addition to power savings and asset harvesting, the course helps to show how to dump usage reports, find, and then utilize the correct de-growth procedures without generating permanent alarms from improperly deleted hardware. Additional considerations are reviewed per the scope of work, including system RC requirements, adjacent co-located equipment risk, and reversion procedures. Equipment may be considered for abandon-in-place (AIP) versus bay removal, understanding that adjacent cable runs may actually still support other critical equipment. Battery-power removal, spikes, and separate grounds are also reviewed. Students are taken through the original switch manufacturer documentation, such as NTPs, GTEPs, Practices, plus certain BellcoreTelcordia, NEBS, and NEC standards, as necessary for a project. The course has several optional components, depending upon your scope of work, including proper Recent Change (RC) procedure, system backups, plus how to migrate service to other network elements, including several unified VoIP or fiber communication products. Many telco techs have little background in data networking. The course can optionally provide some basics of packet-based voice networks which includes a summary of routers switches, the OSI model, and IPv4IPv6, plus how a TDM voice circuit interfaces to, and operates with, a VoIP or MPLS network. Concepts like Cisco CUCM VoIP, or Genband and Metaswitch MPLS migration are explained.

The actual course length is flexible with the content, and can be adjusted depending upon the needs of the class.
Students Will Learn
Target Audience
Technical staff such as Central Office Technicians, Installation, Electricians, NOCSCC, Recent ChangeVerify, and others responsible for the replacement and re-grading of central office switching systems.
Prerequisites
A good understanding of TDM telecommunications and switching principles is suggested due to the accelerated nature of the course. IP Networking knowledge is not required, but may be helpful depending upon curriculum. Those with no previous switching background may wish to consider a maintenance-level or switching overview class.
Course Outline

Module 1:  Common Switching System Components

                        - Tip and Ring, T1R1, E&M

                        - Lines and Trunks

                        - Digital Signals: ADC, DAC

                        - Codecs (G.711, G.729, etc.)

                        - TDM, FDM, PCM

                        - Multiplexing: copper, light

                        - Carrier: DS1, AMI, B8ZS

                        - Stored Program Control Systems

                        - PSTN

                        - Triple-Play Services incl. light FDM, filters, ONTs

                        - VoIP: SIP, SCCS, H.323, RTP

 

Module 2:  Modern Voice Networks: Theory of Operation

                        - Time-Space-Time

                                    Time Slot Count (TSC)

                                    Switching/Space Matrix

                                    Blocking & Concentration Ratio

                        - Switch Operation (platform dependent)

                                    5ESS®, DMS-10/DMS-100/DMS-200/DMS-500®, GTD-5®, EWSD®, DCO™

                                    Processor Types:  Admin/SN, Switching/SM/TCU/LTG, etc.

                                    Peripherals:  Line/Trunk modules, BRI/PRI

                                    Remotes:  RDT, GR-303

                                    Phone Call Sequence of Events (incl. SS7)

                        - Voice-over-IP Systems

                                    The OSI Model (esp. L1 thru L4)

                                    Switches & Routers, incl. MAC, IPv4/IPv6

                                    VoIP Theory of Operation

                                    Cisco model: CME Router, FXS, FXO

                                    Virtual PBX Managers:  3CX, etc.

                        - MPLS Systems

                                    TDM & MPLS Convergence

                                    MPLS vendors (Cisco, Metaswitch, Genband, etc.)

 

Module 3: Input-Output Commands

                        - IO Terminals - CLI, GUI, Poke/MAP/etc., Procomm Plus

                        - 5ESS®, DMS-10/DMS-100/DMS-200/DMS-500®, GTD-5®, EWSD® Commands

                                    Command Syntax

                                    Operator/Device/Device Assignments

                                    Summary

                        - Sample Commands: (platform dependent - such as RST/MAPCI/PUT/ADD/CR, etc.)

                        - Sample Commands: RC & RC/V, reports (switch utilization)

                        - Command Scripting: Procomm, PowerTerm, Order-Input systems

                        - Examples

 

 

Module 4: Documentation

                        - Support & Provisioning Documentation

                                    User’s Guides - DynaText, Helmsman, Worldview, EDDS (as appropriate)

                                    OEM Practices/NTP

                                    Technical Specification - Bellcore/Telcordia Standards

                                    NEBS, NIST, NEC Standards

                        - Card & Equipment Documentation

                                    Engineering Documents

                                    Hardware Matrixes

                                    Recent Change/RCV

                        - IP/MPLS Documentation/SRNDs - i.e. Unified Communications Managers

                        - Review

 

 

Module 5 : Decommissioning a Peripheral Module

                        - Process Overview/Scope of Work

                                    NOC/SCCS Communication

                        - Locate the Procedure (i.e. de-growth)

                                    RTU/RC Patch Issues

                                    Minimum Configuration Requirements

                        - Trial Changes

                                    Check Session

                                    Test Hardware Prior to Turn-down

                                    Alarm Clearing

                                    Regression Testing

                                    System Backup

                        - Module Cutover

                                    Running Script Files

                                    Reversion Procedure

                        - Identification of Cabling & Hardware

                                    Grounding: frame, electrical, lightning, isolated, & office grounds

                                    Fusing, Power Distribution

                                    Fiber Optics

                                    System-Interop Considerations

                        - Removal or AIP

                        - Power Down Procedures

                                    Alarm Verification

 

 

 

Module 6 : Migration Procedures

                        - Process Overview/Desired Outcome

                        - Locate the Procedure (i.e. growth) (platform dependent such as Call Manager)

                        - Test Circuit

                                    Voice, Data, Video components (as needed)

                                    Test Hardware

                                    Alarm Clearing

                        - Service Cutover

                                    Running Script Files

                                    Regression Testing

                                    Alarm Verification

                                    Reversion Procedure

 

 

Module 7 : Block Diagrams & Job Aids

                        - CO Switch Functional Block Diagram

                        - POTS Call Example

                        - Migration Functional Block Diagram

                        - Sample Delete/Add LEN - same system

                        - Sample Delete/Add LEN - new system (incl. rack move)

                        - Cisco CUCM/CLI - create POTS service, basic North American Dial Plan, dial peers

Notes
Can be coordinated with an Overview, Maintenance, or Translations course for a customized curriculum
Delivery Method
Instructor-Led with numerous exercises and examples throughout.
Equipment Requirements
(This apply's to our hands-on courses only)
BTS always provides equipment to have a very successful Hands-On course. BTS also encourages all attendees to bring their own equipment to the course. This will provide attendees the opportunity to incorporate their own gear into the labs and gain valuable training using their specific equipment.
Course Length
5 Days
Website: http://www.btstraining.com
Toll Free: 1-877-Info2Day
Email: info@btstraining.com