Level 2 specification
NR/L2/TEL/30085
Specification for the Maintenance of Electronic PABX Concentrators (formerly NR/WI/TEL/30085)
Issue 2, 7 March 2009
Maintenance regime for electronic PABX switches used as operational telephone concentrators in signal boxes and electrical control rooms: user console and handset tests (typically 6 monthly), equipment inspection, voltages, alarms, clock and system data backup (typically 12 monthly), with one appendix per make: V-Band, Meridian, Syntegra, Realitis/iSDX, MD110, Hicom/HiPath, BP50, Mitel Imagination and Tenovis.
Clause map — what each clause deals with
| 1 | Purpose | Maintaining operational PABX concentrators to reduce deterioration failures |
| 2 | Scope | Switches acting as operational concentrators; business PABXs, power plant, Keltek TSSUs and voice recorders are covered by other standards; remote nodes treated as separate switches |
| 3 | Definitions | Abbreviations used including CDR, DC/AC, ESSD, ESP, HMI, EMC, ICC, PABX, TSSU |
| 4 | Responsibilities | Agree effects with signaller, ESD precautions, off-site backup reachable within restoration SLA, follow manufacturer documents and record their issue, don't rely on built-in meters |
| Appendix A | Maintenance of V-Band | 6 monthly console, label, handset and call function tests; 12 monthly equipment inspection, voltages, cleaning, clock, alarms and data backup |
| Appendix B | Maintenance of Meridian | 6 monthly user console tests and 12 monthly equipment checks at main and remote sites |
| Appendix C | Maintenance of Syntegra | 6 monthly console tests including standby console; 12 monthly equipment inspection and data backup |
| Appendix D | Maintenance of Realitis / iSDX | Weekly file server, link and automatic backup checks with tape rotation; 6 monthly console tests; 12 monthly equipment at main and satellite sites |
| Appendix E | Maintenance of MD110 | 6 monthly console, 12 monthly equipment and backup, plus weekly remote system check of clock, blocked equipment and fault/alarm log |
| Appendix F | Maintenance of Hicom (Hipath) | Console tests with Stratus server and shoe-box PC cleaning and touchscreen recalibration; yearly equipment checks and Stratus database backup |
| Appendix G | Maintenance of BP50 | 6 monthly console tests and 12 monthly equipment inspection with system data backup |
| Appendix H | Maintenance of Mitel Imagination | 6 monthly console tests including press-to-talk handsets and 12 monthly equipment inspection and backup |
| Appendix I | Maintenance of Tenovis | Single 3 monthly service covering equipment inspection, cleaning, checks and system data backup |