FIELD
MAINTENANCE
Keeping telecoms infrastructure reliable across Gauteng through disciplined preventive programmes, rapid emergency response, and rigorous on-site testing. Network uptime depends on a maintenance partner who works to structured schedules, uses calibrated test equipment, and reports findings with full traceability.
Emergency callout available around the clock for critical infrastructure failures across Pretoria and Johannesburg.
PREVENTIVE MAINTENANCE PROGRAMMES
Structured inspection and servicing cycles that identify degradation before it becomes a service-affecting fault. Preventive maintenance is proven to reduce unplanned downtime by up to 50% and lower total maintenance costs by 12-18% across telecoms operations.
Visit Cadence and Scope
We design maintenance programmes with monthly, quarterly, and annual visit frequencies based on site criticality and equipment age. Each visit follows a standardised checklist aligned to manufacturer recommendations and industry best practice.
Monthly Visits
Visual inspection, alarm log review, fan and filter checks, battery float voltage measurement, connector cleaning, and site security verification.
Quarterly Visits
Full equipment functional test, cable tension and integrity checks, earthing resistance measurement, firmware version audit, shelter cleaning, and vermin exclusion inspection.
Annual Comprehensive
Full OTDR fiber baseline, battery load test, power system capacity assessment, antenna alignment verification, structural integrity check, and asset inventory reconciliation.
Standard Checklist Items
Every preventive maintenance visit covers a documented set of inspection points. Findings are recorded in a structured site report issued within 24 hours of each visit, with non-conformances categorised by severity.
EMERGENCY RESPONSE
When infrastructure fails, response time determines how quickly services are restored. Our 24/7 callout capability ensures certified field engineers are dispatched to your site with the correct tools, safety documentation, and access authorisation.
Critical - Total Outage
Complete site outage or loss of service affecting multiple end users. No workaround available. Immediate mobilisation required.
High - Service Degradation
Partial service loss, redundancy failure, or significant performance degradation. Temporary workaround may be available but service quality is reduced.
Medium - Minor Fault
Non-critical fault, cosmetic damage, or advisory item. Service remains operational. Can be scheduled into the next available maintenance window.
Escalation Protocol
Every emergency callout follows a defined escalation chain. If the field engineer cannot resolve the fault within the target window, the issue is escalated to a senior engineer and then to the technical manager. Clients receive status updates at 30-minute intervals during P1 events. All callouts are logged in our ticketing system with timestamps for arrival, fault isolation, resolution, and service restoration confirmation.
ON-SITE INSPECTIONS
Detailed technical inspections using calibrated instruments and standardised procedures. Every inspection produces a documented record with photographic evidence, measured values, and pass/fail results against defined thresholds.
OTDR Fiber Testing
Optical Time Domain Reflectometer testing to locate fiber breaks, splices, and signal loss events along the entire cable route.
OTDR Fiber Testing
Our engineers carry EXFO and Viavi (formerly JDSU) OTDR units for testing single-mode and multi-mode fiber at 1310 nm and 1550 nm wavelengths. The OTDR sends a calibrated laser pulse into the fiber and analyses the reflected light to produce a distance-versus-loss trace.
We perform bi-directional testing from both ends of every fiber strand, as recommended by industry standards, to accurately characterise splice losses, connector attenuation, and macro-bend events. OTDR range is set to at least double the cable length, with averaging between 16 and 64 acquisitions per trace for stable results.
All traces are saved as .SOR files and issued as PDF reports, providing a baseline for future comparisons and supporting warranty or insurance claims.
Copper Cable Certification
End-to-end copper cable testing including continuity, insulation resistance, pair balance, and crosstalk measurements.
Copper Cable Certification
For copper-based infrastructure, we use Fluke DSX cable certifiers to test against TIA-568 and ISO 11801 standards. Measurements include wire map verification, length measurement via Time Domain Reflectometry (TDR), insertion loss (attenuation), return loss, Near-End Crosstalk (NEXT), Far-End Crosstalk (FEXT), and DC loop resistance.
Each cable receives a pass or fail result against the relevant category standard (Cat5e, Cat6, Cat6A). Certification reports are issued electronically with full test data for every pair.
Signal and Power Measurements
Optical power level verification, RF signal strength surveys, and DC power system checks at every active site.
Signal and Power Measurements
Using calibrated optical power meters, we verify transmit and receive levels at each fiber termination point against the link budget. For RF sites, signal strength, signal-to-noise ratio, and interference levels are measured using handheld spectrum analysers.
Power system inspections cover rectifier output voltage, battery bank float and boost voltages, individual cell voltages, load current draw, and generator auto-start functionality. Infrared thermometry identifies hotspots on bus bars, breakers, and cable terminations that indicate loose connections or overloaded circuits.
Visual Inspection Checklists
Systematic visual assessment of every equipment cabinet, antenna structure, cable tray, and support system at the site.
Visual Inspection Checklists
Every on-site inspection follows a checklist covering cabinet door seals, equipment mounting security, connector tightness, antenna alignment markers, earthing strap continuity, cable labelling accuracy, and evidence of water ingress or corrosion.
Geo-tagged photographs are taken of every item inspected. Non-conformances are graded by severity (critical, major, minor) with recommended corrective action timelines. The full photographic record is attached to the inspection report for client review.
Earthing and Lightning Protection
Earth resistance testing and lightning protection system verification to protect sensitive telecoms equipment.
Earthing and Lightning Protection
Gauteng experiences one of the highest lightning strike densities in the world, making earthing system integrity critical for telecoms sites. We measure earth electrode resistance using a fall-of-potential method with a calibrated earth tester, verifying results against the site specification (typically below 5 ohms for telecoms installations).
Surge protection devices (SPDs) on power, signal, and coaxial lines are visually inspected and functionally tested. Lightning down-conductor continuity is verified from the air terminal to the earth electrode. All results are recorded and compared against previous readings to detect degradation trends.
Cable Route Patrols
Scheduled ground-level patrols of buried and aerial cable routes to detect encroachment, damage, or theft risk early.
Cable Route Patrols
Cable theft and third-party encroachment remain persistent risks across Gauteng. Our patrol teams walk and drive cable routes on a scheduled basis, documenting route marker condition, jointing chamber accessibility, warning tape integrity, and any evidence of excavation or suspicious activity near the cable corridor.
GPS-stamped patrol logs provide an auditable chain of custody for every route kilometre covered. Patrol findings feed directly into the maintenance ticketing system so that identified risks are actioned before they result in cable damage or service interruption.
PLANNED MAINTENANCE SCHEDULES
Proactive scheduling ensures every site receives the right level of attention at the right frequency. Planned maintenance reduces reactive callouts, extends equipment lifecycles, and provides clients with accurate, current condition data for all network assets.
Quarterly Cycles
- chevron_rightFull equipment functional test
- chevron_rightBattery bank health assessment
- chevron_rightHVAC and ventilation servicing
- chevron_rightShelter and fence perimeter check
- chevron_rightFirmware update assessment
- chevron_rightStructured condition report
Semi-Annual Deep Inspection
- chevron_rightOTDR fiber baseline comparison
- chevron_rightBattery discharge and load test
- chevron_rightEarth resistance re-measurement
- chevron_rightAntenna alignment verification
- chevron_rightGenerator service and auto-start test
- chevron_rightAsset lifecycle review
- chevron_rightPreventive replacement recommendations
Documentation and Reporting
- chevron_rightStructured site condition report
- chevron_rightGeo-tagged photographic evidence
- chevron_rightTest results in PDF and raw data formats
- chevron_rightNon-conformance severity grading
- chevron_rightCorrective action recommendations
- chevron_rightAsset inventory reconciliation
FAULT FINDING AND DIAGNOSTICS
Systematic troubleshooting using the OSI model as a diagnostic framework. Rather than trial-and-error replacement, we isolate the fault layer by layer, identify the root cause, and implement a targeted fix. This approach minimises mean time to repair and prevents recurring failures.
OSI MODEL TROUBLESHOOTING APPROACH
The OSI (Open Systems Interconnection) model provides a structured seven-layer framework for isolating network faults. We typically apply a bottom-up approach, starting at the physical layer and working upward through data link, network, and transport layers. For faults reported at the application level, a top-down or divide-and-conquer method may be more efficient, starting at the network layer and branching up or down based on initial findings.
PHYSICAL
Check cables, connectors, power, and physical link indicators. Use OTDR, cable certifiers, optical power meters, and visual inspection. Most telecoms faults originate at this layer.
DATA LINK
Verify MAC addresses, VLAN configurations, switch port status, and spanning tree state. Check for CRC errors, frame drops, and duplex mismatches using port statistics.
NETWORK
Validate IP addressing, subnet masks, routing tables, and gateway reachability. Use ping, traceroute, and protocol analysers to isolate routing or addressing issues.
TRANSPORT AND ABOVE
Verify TCP/UDP sessions, firewall rules, DNS resolution, and application-level connectivity. Protocol analysers capture traffic for deep packet inspection when needed.
Diagnostic Equipment
Our field engineers carry a full complement of calibrated test equipment suited to both fiber and copper telecoms infrastructure.
Root Cause Analysis
Finding a fault is only half the job. We perform root cause analysis on every significant failure to prevent recurrence. The process follows a structured methodology.
Symptom Documentation
Record the exact failure mode, affected services, time of onset, and environmental conditions at the time of fault.
Hypothesis Testing
Systematically test each possible cause using measured data rather than assumption. Eliminate causes one by one until the root is identified.
Corrective Action
Implement the fix and verify that the symptoms are fully resolved. Confirm that no new faults have been introduced.
Preventive Recommendation
Document what caused the failure and recommend changes to maintenance schedules, component grades, or environmental controls to prevent recurrence.
SAFETY AND COMPLIANCE
All field maintenance work is performed in compliance with the South African Occupational Health and Safety Act (Act 85 of 1993) and its associated regulations. Our engineers carry valid safety documentation for every site visit.
OHS Act Compliance
All work is performed under the Occupational Health and Safety Act, including the General Safety Regulations, Electrical Installation Regulations, and Construction Regulations where applicable. Risk assessments are completed before every site visit.
Certified Personnel
Our field engineers hold valid working-at-height certificates, first aid qualifications, and site-specific induction training. Personal protective equipment (PPE) including hard hats, safety harnesses, high-visibility vests, and insulated tools are mandatory on every deployment.
ICASA and Industry Standards
Work is performed in accordance with ICASA regulations under the Electronic Communications Act (Act 36 of 2005). Test equipment is calibrated to traceable standards. All fiber testing follows FOA (Fiber Optic Association) recommended practices for OTDR measurement and reporting.
THE MAINTENANCE PROTOCOL
SCHEDULE
Maintenance windows agreed with client based on traffic patterns, site criticality, and SLA requirements. Risk assessments completed before dispatch.
DISPATCH
Certified field engineers deployed with site-specific equipment, calibrated test instruments, safety documents, and access authorisation.
INSPECT
Full checklist inspection with photographic evidence, measured values, and pass/fail assessment against defined thresholds for every item reviewed.
REPORT
Structured condition report issued within 24 hours with findings, severity ratings, corrective action timelines, and comparison against previous baselines.
SCHEDULE A MAINTENANCE ASSESSMENT
CT Communications provides field maintenance programmes for network operators, ISPs, and enterprise clients across Pretoria, Johannesburg, Centurion, Midrand, and Ekurhuleni. Contact us to discuss an SLA programme tailored to your sites, equipment, and budget.