How to Capture Billable Time for Phone Calls
The eight-minute call lands in the middle of a brief you were three paragraphs into. You take it, sort out whatever the client needed, hang up, and drop back into the sentence you left. That call was real work. It was advice and it was billable, and by the time you finish the paragraph it has already fallen out of your head.
Phone calls go like that all day. A client rings twice on your drive home and you make a mental note to log it tomorrow. Opposing counsel catches you for six minutes right before a hearing. Nobody opens a timer for a call that might be over before the timer would matter, and at the end of the week those minutes are simply gone.
Why phone calls are the billable work most likely to vanish
Of everything a lawyer does in a day, calls are the hardest to get onto the bill, and it comes down to three things that stack on top of each other.
They interrupt other work, so logging one means stopping the very task you stopped for to take the call. They feel too small to bother with: a six-minute call reads as trivial against the brief it broke into, even though a handful of them a day is real money over a month. And they leave nothing behind. That last part is the quiet one. An email you sent still sits in your sent folder on Friday, reminding you it happened. A document you edited carries a modified timestamp. A call has neither. Once you hang up, the only trace of it is your memory, and your memory is already full.
The manual fixes, and why they fall apart
Firms know calls slip, so they build habits to catch them. The habits tend to work for about a week.
Reception keeps a call log, which gets the front-desk calls and misses every direct line and cell. Attorneys keep a sticky note or a running list in a notepad, which holds up until a genuinely busy day, which is of course the day with the most calls to write down. A lot of firms fall back on the end-of-day sweep: sit down at six and try to reconstruct who you talked to and for how long.
Every one of these leans on discipline at the worst possible moment. The busier the day, the more calls happen and the less attention anyone has to spare for writing them down. So the method holds on the quiet days, when there was little to capture anyway, and breaks on the days when capturing would have mattered most. That's exactly backwards from what you want.
How Ajax turns a call into a draft entry
This is where passive capture earns its keep, and it helps to be precise about what happens. Ajax, the timekeeping tool we build, connects straight to the phone systems firms actually run: Zoom Phone, Microsoft Teams, RingCentral, Dialpad, VXT, GoTo Connect, and Intermedia Unite.
Through those integrations, Ajax logs the facts that make an entry: when a call started, how long it ran, and which number was on the other end. It treats that the same way it treats an email going out or a document being edited, as one more piece of the workday to be grouped and written up.
From there, two signals move the entry to the right place. The number on the call points to a contact, and the contact points to a client and matter. The work around the call fills in the rest: if you had the Hendricks file open for the twenty minutes on either side of a twelve-minute call, Ajax has a strong read that the call was about Hendricks. It predicts the matter from those signals, gets it right about 92% of the time, and sharpens as it learns which people belong to which files at your firm.
The call then appears as a draft entry in your day's timeline, sitting next to the email and document work it belongs with, already grouped and already written up in your voice. You never touched a timer. The call that would have vanished is now a line waiting for your review.
The calls Ajax doesn't catch
No capture tool gets every call, and it is better to know the edges going in than to find them on an invoice.
Two kinds of call stay outside what Ajax captures directly. A traditional desk phone that doesn't run over the internet throws off no digital activity for the integration to see. And a call from your personal cell, placed outside the firm's phone apps, happens on a device Ajax isn't watching. Neither produces the automatic log that a VoIP call does.
That gap is smaller than it looks. Much of that time still gets caught by context: a call you booked sits on your calendar, and if you pulled the client's file to take it, the surrounding work tells Ajax roughly when and on what. It shrinks over time too, since firms keep moving onto VoIP platforms like the ones above, and every call on a supported system lands inside what Ajax captures automatically.
FAQ
Which phone systems does Ajax support?
Ajax captures calls through direct integrations with Zoom Phone, Microsoft Teams, RingCentral, Dialpad, VXT, GoTo Connect, and Intermedia Unite. Those seven are what it connects to for automatic call capture today, and each call it logs sits alongside the email, calendar, and document work from the same matter.
What about calls on my cell phone?
Calls you make through your firm's phone apps are captured; a call from your personal line, dialed outside those apps, is not. Use the RingCentral, Dialpad, Zoom, or Teams app on your phone for firm calls and those run through the integration like any other. A number dialed straight from your personal cell doesn't reach Ajax, though a calendar entry or the file open around that time often accounts for it.
Does the lawyer still review call entries?
Yes. Every call entry Ajax builds is a draft until the timekeeper reviews it and releases it. Draft entries and activity stay private to each timekeeper until release, so you decide what a call was worth and how the narrative reads before anything reaches a bill.
How does Ajax know which matter a call belongs to?
Ajax predicts the matter from the caller, the calendar, and the work happening around the call. The number ties to a contact, and through that contact to a client and matter, while a related calendar event or the documents open near the call time confirm it. Overall, its matter prediction is right about 92% of the time, and it gets better as it learns your firm's people and files.
The missing calls are easiest to believe when they're your own. Book a demo and we'll run a day of your work through Ajax, calls included.
