Telecom Systems Monitoring Course

Lesson 1 • Core Telephony Hardware Components

Identifies PBX systems, gateways, session border controllers, and endpoint devices. Provides the hardware vocabulary essential for accurate equipment identification.

Lesson 2 • Telephony Network Architecture Basics

Covers PSTN, VoIP, and hybrid network topologies and their roles in call routing. Establishes the structural context needed for all subsequent monitoring tasks.

Lesson 3 • Introduction to Monitoring Concepts

Defines monitoring objectives, key performance indicators, and the difference between reactive and proactive monitoring. Sets the strategic mindset for the entire course.

Lesson 4 • Signal Flow and Call Lifecycle

Traces a call from origination through setup, media exchange, and teardown. Mastery of call lifecycle enables technicians to pinpoint failure stages during monitoring.

Lesson 1 • Categories of Monitoring Software

Distinguishes SNMP-based, syslog, packet capture, and CDR analysis tools by function and use case. Selecting the right tool type is the first step in any monitoring workflow.

Lesson 2 • Log Management and Correlation

Integrates syslog, CDR, and event logs into a unified view for cross-device correlation. Correlated logs accelerate root-cause identification across complex telephony environments.

Lesson 3 • Configuring SNMP for Telephony Devices

Covers MIB loading, community strings, trap destinations, and polling intervals for telephony hardware. Proper SNMP configuration is the backbone of automated equipment monitoring.

Lesson 4 • Packet Capture and Protocol Analysis

Applies packet capture tools to capture and decode SIP, RTP, and RTCP traffic on live networks. Packet-level visibility is critical for diagnosing call quality and signaling faults.

Lesson 1 • Establishing Performance Baselines

Applies statistical methods to define normal operating ranges from historical metric data. Baselines enable anomaly detection and reduce false-positive alerts.

Lesson 2 • Traffic and Capacity Metrics

Measures concurrent calls, Erlang traffic load, trunk utilization, and registration counts. Capacity metrics guide provisioning decisions and prevent congestion-related outages.

Lesson 3 • Voice Quality Metrics

Defines MOS, R-factor, jitter, latency, and packet loss as the primary voice quality indicators. These metrics form the foundation of all quality-based monitoring decisions.

Lesson 4 • Anomaly Detection Techniques

Introduces threshold, trend, and statistical anomaly detection methods applied to telephony metrics. Early anomaly detection prevents minor deviations from escalating into outages.

Lesson 1 • Alarm Correlation and Deduplication

Applies correlation rules to group related alarms and suppress duplicates from cascading failures. Deduplication prevents alert fatigue and focuses attention on root causes.

Lesson 2 • Common Telephony Equipment Faults

Catalogs frequent hardware and software faults in PBX, gateways, trunks, and endpoints. Recognizing fault signatures speeds diagnosis and reduces mean time to repair.

Lesson 3 • Alarm Prioritization and Triage

Ranks active alarms by business impact and urgency to guide technician response order. Effective triage ensures critical service-affecting faults receive immediate attention.

Lesson 4 • Fault Classification Framework

Categorizes faults by severity, affected layer, and impact scope using a structured taxonomy. A consistent classification framework ensures uniform response across teams.

Lesson 1 • Diagnosing Call Setup Failures

Analyzes SIP error codes, registration failures, and dial plan mismatches causing call setup issues. Call setup failures are among the most frequent and impactful telephony faults.

Lesson 2 • Hardware and Power Fault Diagnosis

Diagnoses failed line cards, power supply faults, and environmental hardware issues in telephony equipment. Hardware faults require physical inspection combined with monitoring data correlation.

Lesson 3 • Escalation and Vendor Coordination

Defines when and how to escalate unresolved faults to vendors, including data collection for support cases. Effective escalation minimizes resolution delays when internal resources are exhausted.

Lesson 4 • Structured Troubleshooting Methodology

Introduces the OSI-layer approach, divide-and-conquer, and hypothesis-driven diagnostic models. A repeatable methodology reduces troubleshooting time and prevents missed root causes.

Lesson 1 • DNS and DHCP Dependency Monitoring

Tracks DNS resolution times and DHCP lease availability for telephony device provisioning. DNS and DHCP failures silently prevent device registration and call routing.

Lesson 2 • WAN and Internet Link Monitoring

Tracks bandwidth utilization, latency, jitter, and packet loss on WAN links carrying voice traffic. WAN link health directly determines the quality of remote and cloud telephony services.

Lesson 3 • QoS Monitoring for Voice Traffic

Monitors DSCP markings, queuing behavior, and traffic shaping policies affecting voice packet delivery. QoS misconfiguration is a primary cause of voice quality degradation in IP networks.

Lesson 4 • Firewall and SBC Traffic Monitoring

Monitors session counts, policy hits, and blocked traffic on firewalls and session border controllers. Firewall and SBC issues frequently cause one-way audio, dropped calls, and registration failures.

Lesson 1 • Disaster Recovery Readiness Monitoring

Monitors DR site replication status, backup system health, and recovery time objective compliance. Continuous DR monitoring ensures recovery capabilities are available when needed.

Lesson 2 • High-Availability Architecture Concepts

Reviews active-active, active-standby, and geographic redundancy models used in telephony deployments. Understanding HA architecture is prerequisite to monitoring its operational health.

Lesson 3 • Monitoring Failover Mechanisms

Tracks heartbeat signals, synchronization state, and failover trigger conditions in redundant systems. Undetected failover mechanism degradation leaves systems vulnerable to extended outages.

Lesson 4 • Availability Metrics and SLA Tracking

Calculates uptime percentages, mean time between failures, and mean time to repair for telephony services. Availability metrics provide objective evidence for SLA compliance reporting.

Lesson 1 • Root Cause Analysis and Post-Incident Review

Applies five-why and fishbone analysis to completed incidents to identify systemic root causes. Post-incident reviews convert outage experience into permanent operational improvements.

Lesson 2 • Operational Reporting Fundamentals

Designs daily, weekly, and monthly operational reports covering availability, quality, and fault trends. Consistent reporting creates accountability and supports data-driven operational decisions.

Lesson 3 • Continuous Improvement Frameworks

Applies PDCA and iterative improvement cycles to monitoring processes and telephony operations. Structured improvement frameworks prevent regression and drive measurable quality gains.

Lesson 4 • Strategic Monitoring Roadmap Development

Builds a multi-year monitoring roadmap aligned with business growth, technology refresh, and risk reduction goals. A strategic roadmap ensures monitoring capabilities evolve with the telephony environment.