How do I route dispatch calls to whichever technician is actually free?

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This is a case where it's worth being precise about what a phone system can and can't actually do, because the two things people mean by "route to whoever's free" are genuinely different problems with different solutions.

What a phone system can actually do

A phone system like KrispCall can ring a defined list of people, either all at once or in a sequence you set, through a feature called Ring Strategy, part of its Advance plan at $40 a user a month. This solves "make sure the call reaches someone on this list," not "find the technician who's physically closest to this job." The system has no idea where your technicians actually are; it just works through whatever order or group you configured.

What it genuinely cannot do

If "whoever is free" means "whoever's physically nearest and not already on a job," that's location and scheduling data a phone system doesn't have access to, and no amount of configuring ring order fixes that. This is the job of a dedicated dispatch or field service management tool, which tracks where each technician actually is and what they're doing, and either assigns the job directly or at minimum tells a human dispatcher who to call.

Step by step for what a phone system can solve

1. List your team and their typical availability, not their location, their general working pattern (who's usually in the field versus at a desk). For crews who are out all day, see how to stop missing calls when your team is on the road.
2. Set ring rules: simultaneous ringing if you want the fastest possible pickup regardless of who, or sequential if you want a specific order (dispatcher first, then whoever's on call).
3. Test with real calls at different times of day to confirm the rule behaves the way you expect. A single number for the whole team is covered in how to give customers one phone number that reaches whoever is working.
4. If this isn't solving the real problem, which is usually location-based assignment, stop trying to configure your way around it with ring order and look at a dispatch tool instead. Keeping the dispatch screen simple is in how to give dispatch staff only the tools they need on screen.

What I'd actually tell a dispatcher

A lot of frustration here comes from expecting a phone feature to solve a problem it was never built for. Ring strategy is genuinely useful, it beats a single number ringing one person into voicemail, but it's a blunt instrument: it rings by list order, not by anything that reflects where your team actually is right now. If your real pain point is "the nearest tech should get this job," you need the data a dispatch tool has, GPS or at least a live job board, not a cleverer phone configuration. I've seen teams spend real time fiddling with ring order trying to approximate what a $30-a-month dispatch add-on would just solve directly.

The honest middle ground for a smaller team: keep a human dispatcher as the first point of contact, routed through a simple ring strategy so dispatch calls reliably reach that person, and let the dispatcher make the actual "who's free and nearby" call using whatever informal knowledge or group chat your team already uses. This works fine until you're too big for one person to hold that picture in their head.

When each approach is right

A simple ring strategy is enough for a small team where a human dispatcher (or the owner) is making the real routing decision and just needs the call to reliably reach them. A dedicated dispatch tool earns its cost once you have enough technicians and enough call volume that manual, informal routing is genuinely slowing jobs down or sending the wrong (farther) tech to a job. If the real gap is a busy answerer, see how to stop missing calls when the one person who answers is busy.

A worked example: a plumbing company growing past manual dispatch

Say a plumbing company starts with two technicians and an owner who personally knows exactly where each one is at any given moment, so dispatch calls route to the owner's phone and get verbally assigned based on memory alone, which works fine at that size. By the time the company grows to eight technicians spread across a metro area, that same owner can no longer reliably hold everyone's location and job status in their head, and calls routed purely by a fixed ring order start reaching whoever's next on a list rather than whoever's actually five minutes from the job, sending a tech across town past two others who were closer. The phone system never changed and never failed; the underlying assumption that a human could track everyone's location by memory simply stopped being true once the team grew past a certain size. This is the exact point where a dedicated dispatch tool, tracking live technician location and job status, starts paying for itself: not because the phone system got worse, but because the problem it was never designed to solve became the actual bottleneck.

Common mistakes when diagnosing this

• Blaming the phone system for a dispatch problem. Spending hours reconfiguring ring order, hoping to somehow approximate location-aware routing, is time spent solving the wrong layer of the problem. A phone system routes calls; it doesn't track where people physically are.
• Buying a dispatch tool before confirming the team has actually outgrown manual routing. A two or three-person team where one dispatcher genuinely knows everyone's location from memory doesn't need a dedicated tool yet; the cost and setup effort of one is wasted if a simple ring strategy and good old-fashioned knowledge already cover it.
• Assuming a dispatch tool and a phone system are competing solutions. They solve different layers of the same problem and generally work best together: the phone system gets the call reliably to a human, and the dispatch tool gives that human (or an automated system) the real location and status data needed to make the actual routing decision well.

How to tell which side of the line you're on

Ask one honest question: if a call came in right now, could anyone on your team correctly say, without checking anything, who's actually closest and free to take it? If the answer is yes, reliably, your real need is a phone system that gets calls to that person, which a ring strategy already does well. If the answer is "it depends" or "we'd have to call around to find out," that uncertainty is itself the evidence that you've outgrown memory-based routing, regardless of how good your ring strategy configuration is. No amount of clever phone setup closes that specific gap, because the gap isn't about the phone at all.

How I'd approach this

If you want calls to actually trigger smart routing, checking who's free and closest before ringing anyone, that's a real integration between your phone system and whatever job or location data you track, built as custom logic on top of both. I build exactly this kind of connective layer for field service businesses that have outgrown manual dispatching, and I'll tell you honestly if a simple ring strategy is actually enough for your current size.