Which practical tests do you perform with incoming calls, queues, and CRM screen pop-ups before go-live?

Before the go-live of a contact center environment, you should test at least the following components: routing of incoming calls, queue and overflow behavior, CRM screen pop-ups, error scenarios and edge cases, and the integration between telephony and supporting systems. A thorough testing procedure prevents customers from encountering technical problems after go-live and ensures employees don’t have to work with incomplete information. In this article, you will find a concrete approach for each component.

Which components must be tested before go-live?

Before the go-live of a telephony system or contact center platform, you test the entire chain from incoming call to handling: routing, queues, IVR menus, CRM integration, screen pop-ups, callback requests, reports, and error scenarios. A testing procedure is only complete when each component has been validated in both the ideal scenario and with unexpected input.

Many organizations only test the happy flow: the call that proceeds exactly as intended. But in practice, customers call outside of opening hours, no one selects an option in the IVR menu, or an agent drops out while a call is in the queue. All these situations must be tested, documented, and approved before go-live.

A useful breakdown for your test plan:

• Functional tests: does each component work as configured?
• Integration tests: do telephony, CRM, and other systems exchange data correctly?
• Load tests: how does the system behave at high volumes?
• Error scenarios: what happens if a step fails or an agent is unavailable?
• User Acceptance Tests (UAT): do end users confirm that the system works as expected?

How do you test the routing and handling of incoming calls?

You test incoming calls by manually going through each configured routing path with test calls. Check for each IVR choice, queue, and skill group whether the call reaches the correct agent or department, whether the correct greeting is heard, and whether the transfer proceeds correctly. Record the expected outcome in advance so you can assess the test result objectively.

When testing routing, work systematically from the outside in. Start at the first point of contact: the incoming phone number and the IVR greeting. Then check each menu option individually. If a caller chooses option 1, the call must end up in the correct queue, with the correct hold music or queue message, and be offered to an agent with the corresponding skill.

Also test the transfer on no-answer. What happens if an agent does not answer the call within the set time? Does it go back to the queue, to another agent, or to a voicemail box? And does the agent or supervisor receive a notification? These are details that are easily overlooked in configuration but become immediately visible in practice.

How do you check if queues function correctly under load?

You check queues under load by having multiple test calls come in simultaneously and observing whether the queue order is correct, wait time messages are played correctly, and overflow configurations activate at the set time. Test this both during and outside of opening hours and simulate a scenario where all agents are busy.

Queues behave differently as volume increases. With one call in the queue, behavior is predictable. With ten simultaneous calls, priority rules, timeout periods, and overflow routes can suddenly react differently than expected. Therefore, perform load tests with a realistic volume based on your peak hours.

Specifically check the following situations:

• Is the caller redirected to an alternative channel or callback option after the set wait time?
• Does the overflow rule to another queue or external number activate at the right time?
• Does a caller who has been waiting a long time get higher priority in the queue (priority escalation)?
• Does the queue correctly stop accepting calls outside of opening hours?

Note the exact settings, expected behavior, and actual result for each test. Deviations are not a failure of the testing process, but valuable signals that you can resolve before go-live.

How do you test CRM screen pop-ups for accuracy and timing?

You test CRM screen pop-ups by making test calls from known and unknown phone numbers and checking whether the pop-up appears at the right time, shows the correct customer data, and links correctly to the CRM record. Also test what happens if a number is not recognized or if multiple records match.

The screen pop-up is the first thing many agents see when a call comes in. If the pop-up appears too late, shows incorrect data, or fails to appear at all, the call already starts at a disadvantage. Timing is crucial: the pop-up must be available the moment the agent answers the call, not a few seconds later.

Test scenarios for known and unknown callers

Test with a phone number that exactly matches one CRM record. Check whether the correct name, the correct file, and any open cases are shown. Then test with a number linked to multiple records: does the system show a selection list or does it automatically select a record? Both behaviors can be correct depending on the configuration, but it must match what was agreed upon.

Test scenarios for unknown numbers and private numbers

Also test with a number that is not in the CRM and with a suppressed number. Does an empty pop-up appear allowing the agent to create a new contact? Or is the call offered without a pop-up? Ensure agents know what to do in each case so that no data is lost after go-live.

Which edge cases and error scenarios should you not skip?

Edge cases and error scenarios you should not skip include: calls outside opening hours, IVR timeouts without input, agent failure during an active call, CRM connection errors, queue overflow, and callback requests when queues are full. These are the situations that cause problems first in production but are most often skipped in tests.

A structured list of error scenarios to always include:

• No input in the IVR menu: what happens if a caller presses nothing? Does the menu repeat, or is the caller redirected?
• Invalid input: what if a caller presses a non-existent option?
• Agent drops out during call: is the call placed back in the queue or disconnected?
• CRM unreachable: can the agent still take the call without a pop-up, and is this logged?
• Call outside opening hours: does the correct closing message play and is a callback option offered if applicable?
• Maximum queue capacity reached: what does the caller hear and what does the system do?

By explicitly including these scenarios in your test plan, you prevent them from only being discovered after go-live, when a real customer experiences the error.

Who performs the tests and how do you document the results?

The tests are performed by a combination of technical administrators, who know the configuration, and end users, who will use the system daily. Document each test case with the input, the expected outcome, the actual result, and the status (passed, failed, or still open). Use a shared test document or test management system so everyone can follow the progress.

Technical administrators are best able to recognize edge cases and integration problems. End users, such as agents and team leaders, identify problems in the daily workflow that a technician might not always notice: a pop-up appearing at the wrong time, an incorrect queue name, or a confusing status message.

Good test documentation contains at least:

• A unique test case ID per scenario
• The preconditions (what settings or data are needed?)
• The test steps in order
• The expected outcome
• The actual result
• The name of the tester and the test date
• The action status for a failed test

Ensure that failed test cases are assigned an owner and a deadline for resolution. A test that fails but is not followed up on is as dangerous as a test that was never performed. A well-organized knowledge base for customer contact teams can help by making test protocols and configuration documentation centrally available to everyone involved in the go-live.

How Pegamento helps you with a thorough testing procedure before go-live

A go-live is only reliable if the underlying testing procedure is complete and structured. Pegamento guides organizations through the entire process: from configuration and integration to test preparation, execution, and acceptance. We work with proven modules and smart combinations of standard building blocks, so you don’t need expensive custom work but still get a solution that perfectly fits your processes.

What we can do for you:

• Drafting a complete test plan with functional tests, integration tests, load tests, and error scenarios
• Guiding user acceptance tests with agents and team leaders
• Testing and validating AI-driven integrations between telephony, CRM, and other systems
• Documenting test results and monitoring the follow-up of findings
• Supporting the deployment of Agentic AI for customer service, where intelligent assistants act independently and don’t just follow instructions
• One point of contact for the total package: advice, implementation, testing, and management under one roof

Do you want to know what a structured testing procedure looks like for your contact center environment? Contact Pegamento and discuss which steps are needed for a reliable go-live.