The assessments
CritiCall vs NTN ECOMM: How the Two Tests Differ
CritiCall vs NTN ECOMM: how the two dispatcher tests differ, how the job posting tells you which you'll sit, and how to prepare for each one properly.
Published July 31, 2026 · 7 min read
If you have started applying for dispatcher jobs, you have probably seen both names — CritiCall and ECOMM — and wondered whether you need to prepare for one, the other, or both. They are two of the most common pre-employment assessments for 911 dispatchers and public-safety telecommunicators in the United States, they overlap heavily in the skills they measure, and they are administered in genuinely different ways. Understanding the difference tells you what to expect and, just as usefully, how to find out which one you will actually sit.
The most important difference is the delivery model
The two instruments test overlapping skills, so the sharpest distinction is not the content but the logistics — who schedules the test, who pays, and what a single sitting is worth.
CritiCall is typically administered by the hiring agency itself. You apply, the agency invites you, you test at their facility or on their software, and the result belongs to that process. Apply to five agencies that use it and you may sit five separate tests.
ECOMM is the emergency communications entry-level test administered through National Testing Network. Here you usually register as a candidate, schedule your own sitting, and generally pay a fee yourself. Once you have a score, you can release it to participating agencies that accept it — so one afternoon of testing can support several applications at once. We cover that model in depth in the NTN ECOMM dispatcher test explained.
This changes how seriously to treat the booking. In a single-agency model, a poor day costs you one application. In the score-sharing model, a single result can go to multiple departments, so a bad sitting costs more and a good one is worth more. Do not sit an ECOMM-style test early "just to see what it's like."
Content: standardized instrument versus modular battery
The second real difference is structural. A network-administered instrument like ECOMM is broadly consistent from candidate to candidate — that consistency is what makes sharing a score across agencies coherent in the first place. You can prepare against a fairly stable picture of what it covers.
CritiCall is a modular battery the agency assembles from a catalog of components. Which components appear, in what order, and with what weighting is the agency's decision, and it varies. That is why no forum post can tell you exactly what your CritiCall sitting will contain, and why our component-by-component overview is framed as "a subset of these, selected by your agency" rather than a fixed list.
In practice both draw on the same underlying abilities, which is the good news for preparation.
| Aspect | CritiCall | NTN ECOMM |
|---|---|---|
| Usually administered by | The hiring agency | National Testing Network |
| Who typically pays | The agency | Often the candidate |
| Score reuse | Usually tied to one process | Shareable with participating agencies |
| Structure | Modular battery the agency assembles | More standardized instrument |
| Common components | Data entry, cross-referencing, comparison, memory, math, reading, typing, and more | Data entry, reading, memory, listening, written clarity, and often video judgment items |
How to tell which one you'll take
You do not have to guess. The job posting is the authority, and it almost always tells you — you just have to read it as a set of instructions rather than a description.
- Look at where it sends you to test. If the posting directs you to register with National Testing Network or create a candidate account on an external testing platform, that is your strongest signal. If it tells you the agency will contact you to schedule testing at its own facility, that points the other way.
- Look for who pays. A posting that mentions a registration or testing fee you are responsible for is describing a candidate-scheduled model. An agency-funded test usually says nothing about a fee because there is not one.
- Look for a skills outline. Some postings or candidate information packets list the abilities tested. That tells you the content regardless of the brand name.
- Ask the human resources contact directly. If the posting is silent, email and ask which assessment is used and how testing is scheduled. The worst answer is that they do not disclose it, which is still information.
Our guide to reading a dispatcher job posting walks through extracting this reliably, along with the requirements and deadlines buried in the same document.
How prep differs — and where it does not
Because both tests lean on the same core abilities, the majority of your preparation is identical: build clean numeric and alphanumeric data entry, drill memory and recall with an encoding structure rather than a flat list, practice reading comprehension with strict answer-from-the-text discipline, and do at least one full-length continuous run so sustained attention is not a surprise.
The differences are at the margins. For a modular CritiCall battery, breadth is your friend — you cannot know the exact mix, so being competent across all the component types is worth more than being excellent at one. For a more standardized ECOMM sitting, you can target the known content more tightly, and you should expect video-based judgment items that ask what a reasonable response would be. Those items are written against generalized public-safety reasoning, not any one center's rulebook; answer them that way, and keep in mind that on the job your agency's protocol governs.
If you are early in the process and just want the plain-language picture of what either test contains, what is on the 911 dispatcher test lays out the common modules with illustrative examples.
CritiCall is a registered trademark of Biddle Consulting Group, Inc. ECOMM is a trademark of the National Testing Network, Inc. DispatchDrills is an independent practice provider and is not affiliated with, endorsed by, or sponsored by Biddle Consulting Group, Inc. or the National Testing Network, Inc. All examples in our material are original and illustrative.
Common questions
Is ECOMM the same as CritiCall?
No. They are separate instruments from separate organizations with different delivery models. They assess overlapping skills, which is why practicing those skills prepares you for either, but the tests, the scoring, and the way a result reaches an agency are not the same. A score from one is not a score for the other.
Which test is harder?
Neither has a fixed difficulty, because neither has a universal pass mark — agencies set their own minimums. What makes either feel hard is speed and accuracy under time pressure, and that is common to both.
Can I prepare for both at once?
Largely, yes. The shared core — data entry, memory, reading, attention under load — covers most of both. Add breadth for a modular CritiCall battery and expect video judgment items on the ECOMM side.
How do I know which one my agency uses?
Read the posting for where and how you are told to test, whether a fee is mentioned, and any skills outline. If it is silent, ask the agency's human resources contact directly.