Quality Engineering for Communications
Your team fixed this defect eight months ago. Then again in the spring. It's back, in a different component, behaving the same way.
Not a similar defect — the same failure, wearing new clothes.
And nobody has time to work out why, because there are eleven other incidents open.
Segments
- Operators / CSPs
- CPaaS and communications APIs
Regulatory ground
- NIS2
Why the same defects keep coming back
Why do the same software defects keep recurring?
Root cause analysis in communications almost never completes. It stops at which component failed — because that's enough to restore service, and restoring service is the only thing anyone has capacity for.
But which component is not a cause.
It's a location.
The cause is whatever in the architecture, the interfaces, or the release process permits that class of failure to occur — and answering that takes a system-wide view no single engineer holds any more.
So the fix is local, the cause survives, and the defect reappears somewhere adjacent.
Each recurrence gets logged as a new incident, so the pattern never becomes visible in the numbers. Your incident count looks like bad luck rather than a loop.
Making recurrence visible is the whole game.Cluster defects by underlying cause rather than by component, and the loop shows up immediately — usually three or four causes producing most of what your team spends its year on.
What actually breaks
What makes testing telecom and communications systems difficult?
- Failures arrive at everyone at once.There's no gradual rollout to a small cohort when the fault is in provisioning or routing. Blast radius is the default.
- Two stacks, one system.A modern core alongside OSS and BSS older than most of the team, joined by integrations nobody fully documented.
- The test environment isn't the system.Real network conditions, real carrier interconnects, real volume — none of it reproducible in staging, so a whole class of defect is only findable in production.
- For CPaaS, your API contract is someone's production dependency.A change that's technically backward-compatible still breaks a customer who parsed your response the wrong way.
- Delivery and quality vary by route.Message and call quality depend on carriers and geographies you don't control, and your suite tests the happy path through one of them.
- Severity is economic, not technical.A cosmetic defect in a self-service portal and a service-affecting defect in provisioning get the same triage queue.
NIS2 made this a board-level problem
What does NIS2 require from telecom operators?
Electronic communications providers are essential entities under NIS2. Most EU Member States have now transposed it, national audit programmes are running, and the first fines have landed — Belgium, Italy, Hungary and Lithuania among them. Maximum exposure is €10 million or 2% of global turnover.
The part that changes the conversation isn't the fine.Article 20 puts personal liability on management bodies, and national transpositions allow senior managers to be temporarily barred from their functions. This stopped being an IT budget line and became something a CEO carries personally.
Two NIS2 obligations are testable, and that's where we work.
Incident reporting runs on a 24-hour early warning and 72-hour full notification. Most organisations have a documented procedure that has never been exercised under time pressure. Whether it actually completes in 24 hours is a scenario test, not a policy review — and the answer is usually no the first time you run it.
The second is demonstrating that your risk-management measures work. Under proactive supervision, "we have a control" is a weaker answer than "here is evidence the control behaves as specified, tested on this date." Evidence generated continuously beats evidence assembled the week an auditor arrives.
Where we stop. NIS2 is a cybersecurity directive and we are not a cybersecurity firm. We do not do penetration testing, threat intelligence, or security architecture. We test that controls behave as specified and that operational processes function under the conditions they'll face. Engage a security specialist for the rest — we'll say so on the first call.
What we do
- Defect intelligence.Clustering by underlying cause rather than component, so recurrence becomes visible and the three or four causes driving most of your year surface.
- Root cause analysis that closes.Not just which component — what permits the class of failure, and what change stops it recurring.
- Trend prediction.Where the next cluster is forming, based on change patterns and defect history.
- Interface and contract testing.For operators, the integration seams between old and new. For CPaaS, the API contracts your customers depend on more literally than they told you.
- Incident process testing.Exercising detection, escalation and notification against the clock, before a regulator sets the clock for you.
Delivered through AI-Driven Validation, Test Architecture, or Intelligent Quality Operations.
Proof
AI Defect Intelligence
A WeAreQA engagement
A telecommunications enterprise.
Root cause analysis needed significant manual investigation, and the same classes of defect kept returning across different components. We built AI-assisted defect clustering and trend analysis over their own defect history.
- 55%Faster root cause identification
- 40%Reduction in repeat defects
- 35%Improvement in defect trend prediction
The middle number is the one that compounds. Faster root cause saves hours per incident. Fewer repeat defects removes the incident entirely — and removes every future recurrence of it. One is efficiency, the other is the loop breaking.
The business case
For the conversation with your CEO or board.
What it costs today
- RecurrencePaying repeatedly to solve the same problem, with no compounding return
- Engineering capacitySenior people permanently in incident response instead of building
- Customer impactFailures reach the whole base at once; churn follows visible recurrence
- NIS2 exposureFines to €10M or 2% of turnover — and personal liability for management
- Audit readinessProactive supervision means evidence on demand, not evidence when asked
The first row is the one that decides this. Everything else is downstream of paying three times for a fix you already bought.
Where we're not the right fit
Prime QA vendor at Tier-1 carrier scale. We're a small senior team. Inside a large operator we work on defined programmes — defect intelligence, a specific platform, a testing capability — not the whole estate. If you need a partner who can staff hundreds, that isn't us.
Network and RF testing. Protocol conformance, radio, and physical-layer testing need specialist labs and equipment.
Security testing under NIS2. Penetration testing and threat intelligence are a security firm's work, not ours.