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Phone Number Monitoring

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IP PBX and How It Works

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How IP PBX Systems Work and How to Monitor Them Properly

Internal telemetry watches the PBX itself. External synthetic calls watch what the caller experiences. Voice infrastructure has moved off purpose-built TDM hardware and onto software-defined IP PBX systems running on commodity servers or in the cloud. That shift expanded the surface area of things that can go wrong without expanding what most […]

IVR testing

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IVR Monitoring and Testing Tools Comparison: Top 9 Solutions for 2026

When your contact center's IVR system fails, you lose revenue, frustrate customers, and damage your brand's reputation. Relying on customers to report phone line outages is a strategy destined for failure. Proactive IVR monitoring and testing tools are essential for modern customer experience (CX) teams. However, the market for IVR testing software is highly fragmented. […]

Two IT professionals reviewing SLA compliance reports on a laptop

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Phone SLA Monitoring: How to Enforce Voice SLAs and Guarantee Call Reliability

Voice services sit on a quiet contradiction. Most businesses treat their phone lines as mission-critical — the path customers use to place orders, report outages, book appointments, or reach a nurse — yet very few actively verify that those lines meet the service levels their carrier agreed to in writing. When a number goes silent […]

Close-up of hands typing on a laptop showing DID monitoring analytics

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VoIP DID Monitoring: How to Catch Silent Call Failures Before Your Customers Do

A phone number used to be a copper pair. Today it is a software-defined route that touches originating carriers, SIP trunks, DNS records, session border controllers, codecs, NAT devices, and STIR/SHAKEN attestation engines before it ever reaches your PBX. Each of those hops is a point of failure — and most of them fail silently, without […]

Two network engineers discussing Kamailio server performance on a monitor

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Proactive Kamailio Monitoring: Ensuring Rockstar SIP Server Performance

A high-performance SIP server serves as the communication hub in the VoIP space. Many people choose Kamailio as their main open-source server because of its versatility, scalability, and raw power. But immense power also comes with a great responsibility to make sure it functions perfectly.

A call center agent with a headset working on a laptop with SIP monitoring software

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SIP Monitoring: The Unsung Hero of Crystal-Clear Business Communication

Modern business telephony relies heavily on the silent workhorse, Session Initiation Protocol (SIP). It is the protocol that starts, continues, and terminates real-time phone, video, and message conversations. Business is booming when it’s working. However, when it doesn’t work, communication ceases. Comprehensive SIP monitoring is one of the most crucial investments you can make in …

A hotel receptionist on the phone, relying on a MiRTA PBX system

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MiRTA PBX Monitoring Transforms a Multi-Tenant Hospitality Service Provider

OpenSIPS Monitoring Ensures High Availability for a Global Telecommunications Carrier A top hospitality management company used a multi-tenant MiRTA PBX platform to give a group of hotels and resorts personalized communication services. While MiRTA PBX gave them the scalability and flexibility they needed, managing voice services for many properties came with its own set of ...

A VoIP engineer wearing a headset and analyzing OpenSIPS performance graphs

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OpenSIPS Monitoring Ensures High Availability for a Global Telecommunications Carrier

OpenSIPS was used to build the core routing infrastructure for a global telecom provider that specializes in wholesale VoIP termination and origination. A very high degree of performance and dependability was required due to the sheer volume of traffic and the complexity of their routing logic. Any outage or deterioration in service could have serious …