DESIGN CONSULTING

A good system
is designed, not assembled.

For data centres, supertall towers and industrial campuses we join at concept and construction-drawing stage. The real difference is not the product line — it is an experienced consulting design team settling architecture, capacity, coverage, spectrum and compliance before the drawings are frozen.

WHAT'S INCLUDED

Four things in every engagement

Starting from the building itself, we take the private network from "it can be installed" to "it works, it can be verified, and it is compliant". The four parts interlock — each is opened up below.

WHY EVERTAC

The difference is the team
standing behind the drawing

Products and systems are the easy part. What separates a system that ages well from one that does not is a consulting design team that gets these five judgements right before the drawings are issued.

01
The architecture is right

Topology matched to the building, with capacity and redundancy settled in one pass — no structural debt left behind.

02
Equipment fits the job

Source, remote units and antennas matched to the environment: neither over-specified nor short.

03
The long view is built in

Headroom reserved so a later phase does not mean touching the core of the system.

04
The design can be verified

What the design promises is what acceptance testing measures — one set of numbers, not two.

05
Regional compliance first

Spectrum and certification checked early, so nothing stalls at the point of installation.

PART 01 · ARCHITECTURE

The building decides the topology

Topology is not a template to copy. The form of the building and the availability the operation needs decide whether the answer is a tree or a ring. On a normal day the two look identical — the difference only shows the moment something fails.

TREE
One break, everything downstream goes dark

Devices are chained in series. One failed remote unit mid-chain takes every antenna beyond it offline at once, the impact grows along the chain, and finding the fault means walking the chain stage by stage.

FAULT Main Bldg B Bldg E Bldg C Bldg D
Simple and inexpensive · for small and mid-size sites where availability requirements are moderate
RING
One break, traffic reroutes itself

The fibre closes into a ring, reachable from both directions. When a node fails the system switches to the other path in milliseconds; only the failed segment is affected, every other area keeps talking, and the platform points straight at the device.

FAULT Main Bldg B Bldg C Bldg E Bldg D
Self-healing and easy to extend · for high-availability campuses such as finance, government and data centres
PART 02 · CAPACITY

Three calculations, settled before work starts

Capacity is not a guess. Three numbers are worked out up front, and each one decides whether the system holds at peak and can still grow in five years.

CH
Channel capacity
Traffic converted into channels and talk groups: one channel (a frequency pair) carries two talk groups, with 5–20 radios per group as the working range — that sets the channel and frequency count.
TX
Transport capacity
The fibre backbone and the master and remote units must carry every channel without loss, with link headroom kept back so peaks do not congest.
RED
Redundancy
Critical links run as a ring or dual route so a single failure switches over automatically and capacity does not collapse with one device.
The talk-group capacity knee
Probability of call collision against the number of radios in one group
100% 75% 50% 25% 0 0 10 20 30 40 50 Knee at N≈22 · 50% collision Comfortable 5–20 radios Collisions climb >20 radios · exponential Radios in one talk group Call collision probability
Past roughly 22 radios in a group, more than half of calls collide — the knee is what decides how talk groups are split
PART 03 · COVERAGE

Coverage argued
on the floor plan

First the antenna positions are laid onto the real floor plan; then a predicted heat map verifies whether every area meets target. The two views alternate here — design and outcome, matched one to one.

1
Lay out the points
Antenna spacing and point numbering set on the real floor plan, by room type and cabinet density.
2
Predict the heat map
RF simulation shows the signal distribution area by area, revealing where coverage falls short and a point has to be added.
3
Verify on site
After commissioning, a measured survey is written back against the prediction — the promise and the result on the same sheet.
AUTO
Predicted coverage heat map
Antenna position drawing Predicted coverage heat map
Strong Meets target Edge · needs an added point
PART 04 · SPECTRUM & COMPLIANCE

Spectrum secured
before handover

A private radio system cannot legally go live without spectrum. We coordinate the licence application with the regulator in your market, prepare and submit the compliance documentation, and get the frequencies in place before acceptance — not after the programme has slipped.

01
Work out what is needed

The number of frequencies follows from the capacity design, so the application is accurate rather than padded.

02
Coordinate the application

We deal with the regulator and prepare and submit the application materials.

03
Submit the compliance file

Type approvals, equipment schedules and supporting documents assembled and filed together.

04
In place ahead of time

Spectrum is secured before acceptance testing, so it never becomes the reason a programme slips.

DELIVERABLES

Eight drawings come out of the design stage

All of them drop straight into your drawing set, scaled up or down with the size of the project.

08
01
System architecture drawing

The full device chain and quantities from source to antenna

02
Antenna layout plans

Points and numbering per floor, overlaid on your own plans

03
Link budget

Power calculation from the source to every antenna port

04
Coverage heat map

Predicted signal distribution, colour-coded by level

05
Bill of materials

All equipment and cable, for costing and procurement

06
Channel and talk-group plan

Channel count and how operating teams are grouped

07
Cable route drawing

Fibre and feeder routes with lengths

08
Design statement

The basis for each parameter and how special locations are handled

Get the private network into your drawing set

Join us at concept stage and settle architecture, capacity, coverage, spectrum and compliance once.

Book a design consultation →