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How Do We Keep Track of Desk Phones, Mobiles and Serial Numbers Across Stores, Vans and Customer Sites?

Telecoms resellers lose track of handsets between stock room, engineers and customer sites. We build handset stock tracking by serial and MAC address.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Handset stock goes missing on paper because phones move between the stock room, engineers' cars, customer sites and repair returns, and nobody records the move. We build stock tracking by serial number and MAC address that follows each handset from delivery to the customer account, so you know what you hold, what is out on loan and what should be billed.

The stock count that never matches

An order for twenty desk phones and a couple of conference units comes in. The stock sheet says there are thirty on the shelf. There are twelve. Some went out with an engineer for a job last week and three came back unused, but they are in the boot of his car. Four were sent as replacements for faulty units, and the faulty ones are sitting in a box waiting to be returned to the distributor. Two were lent to a customer while their order was delayed.

Mobiles are worse. Handsets arrive from the distributor against a connection, sit in the office until the customer's SIMs are ready, and sometimes go out as a like-for-like swap for a broken phone without anyone updating which serial is with which user.

So you order more stock to be safe, and the shelf fills with the wrong models.

Why handsets are hard to count

A handset is not a box of screws. Each one has a serial number, a MAC address for provisioning, sometimes an IMEI, and it matters which customer and which user it ends up with.

  • Stock moves in several directions: in from distributors, out to jobs, back from jobs, out as loans, back as faults, off to repair or return.
  • Engineers carry stock on the road, and their car is a stock location nobody counts.
  • Provisioning needs the MAC address against the customer's account on your hosted platform, which is often typed in by hand from the box label.
  • Handsets sold outright, rented, and supplied free on a contract all need recording differently.
  • Faulty units have a return deadline with the distributor that is easy to miss.

Where the losses turn up

GapResult
Phone installed but not recordedRental never billed, or asset never charged
Loan handset never recoveredStock written off quietly
Faulty unit not returned in timeCredit from the distributor lost
MAC typed wronglyPhone does not provision, second site visit
Over-ordering to be safeCash tied up in old models

Each of these is small on its own. Together they are money sitting on shelves, in vans and in customers' cupboards, and time spent by engineers standing on site with a phone that will not register.

How we track handsets from delivery to desk

  1. Goods in: each handset is scanned by barcode on arrival, capturing serial and MAC address from the label, against the distributor's delivery note.
  2. Every location is a stock location, including each engineer's vehicle, so a handset leaving the office is booked out to a person, not to 'out'.
  3. When a job is completed, the engineer's app records which serials were installed at which site, and the rest go back to their van stock.
  4. Installed handsets are linked to the customer account, and the MAC address is passed to your hosted platform for provisioning where it offers an API, so nobody retypes it.
  5. Loans and faults get a due date: a loan back from the customer, a fault back to the distributor within their returns window.
  6. Reorder points are set per model, based on what actually goes out, and warn you before the shelf runs out or fills with slow movers.

Engineers need to use it on a phone in a comms cupboard, so the app is built for that: large buttons, scan first, type rarely.

A normal day with it in place

Before an engineer leaves, the job shows which handsets are needed and which ones are already in their car. On site, scanning each phone as it goes on the desk links it to the customer and starts provisioning. Back at the office, a quick look shows what is overdue: three loans out, one fault box due back to the distributor this week.

Month end, the stock value is a report rather than a Saturday morning count. And when a customer queries whether they rent or own the phones on their desks, the answer is on the account.

Recognise any of these?

  • Your stock sheet and your shelf disagree most weeks.
  • Engineers keep a private stash of handsets in their cars.
  • MAC addresses are typed from the box when provisioning.
  • Faulty handsets miss their return window with the distributor.
  • You are not sure every rented handset is being billed.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

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Do engineers need special scanners?

No. Most phones scan barcodes well enough through the camera. Dedicated scanners are an option for a busy stock room.

Can it read serials from distributor delivery files?

If your distributor sends an advance shipping file with serials, we import it so goods in is a check rather than a scan of every box.

Will it provision phones on our hosted platform?

Where the platform has an API for registering devices, yes. Where it does not, we produce the list in the format it imports.

What about mobiles with IMEIs?

They are tracked the same way, with the IMEI and the SIM or user they are assigned to.

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