Level 2 specification
NR/L2/TEL/30122
Specification for the Maintenance of Electronic PABX Switches (formerly NR/WI/TEL/30122)
Issue 2, March 2009
Maintenance specification for Network Rail-owned office and control centre PABX telephone switches (not leased, not safety-critical concentrators): definitions, maintainer duties on ESD, backups and records, and service schedules for MD110, Hi-Path, Tenovis, Meridian and Syntegra switches.
Clause map — what each clause deals with
| 1 | Purpose | Defines routine maintenance for Network Rail-owned electronic PABX switches to reduce deterioration failures and find faults early |
| 2 | Scope | Applies to owned, non-leased switches serving offices and ICCs; safety-critical concentrators, power plant, voice recorders and 999/112 testing are pointed to other specs; remote nodes count as separate switches |
| 3 | Definitions (in addition to those defined in NR/L2/TEL/31002) | Abbreviations list for PABX work, e.g. CDR, ESD/ESSD, LIMs, MMI, NTP, SLA, TME and UPS |
| 4 | Responsibilities | Maintainer duties: ESD precautions, off-site backup location able to meet the SLA, agreeing scope with the user, reporting and recording defects, testing to manufacturer documents; multiple services done in reverse letter order |
| Appendix A | Maintenance of MD110 Switches | Ericsson MD110: daily automatic backup plus Services A to D (cleaning and data backup, operator console tests, equipment and voltage checks, system log and date/time checks) at set intervals |
| Appendix B | Maintenance of Hi-path switches | Siemens Hi-Path: monthly service with duty manager liaison, cabling and NTP checks, alarms, test calls, MO drive archiving and swap, server and fan cleaning |
| Appendix C | Maintenance of Tenovis switches | Tenovis: 3-monthly service with ISM status check, cabling, earth bonding, ESD studs, operator touch screens, DA and USER/TERM file backups and cleaning |
| Appendix D | Maintenance of Meridian switches | Nortel Meridian: 3-monthly operator console checks and 12-monthly full equipment, voltage, fault log, line card status and backup service |
| Appendix E | Maintenance of Syntegra switches | Syntegra: 3-monthly console and handset checks and 12-monthly equipment, voltage, fault log, external link and backup service |