DocumentService sheet
Division01 · SIZ Télécoms
ManufacturerMotorola Solutions
First deliverableCoverage survey
Division 01 · SIZ Télécoms · Authorised Motorola Solutions partner

Private radio networks.

We design, deploy and maintain the radio networks of organisations whose operations cannot tolerate an outage: mining, ports, industry, security, emergency services. A single point of contact, from coverage survey to maintenance contract.

  • Coverage survey delivered
  • ARTCI frequency application
  • Maintenance contract
§ 1 · Scope

Four disciplines, one accountable party.

Where an outage is not an option, the network must be designed as a whole: terminals, infrastructure, supervision and maintenance.

01DMR & TETRA networks

From single site to multi-site network: conventional, IP Site Connect, Capacity Plus, Capacity Max, or a TETRA DIMETRA system.

02Radio engineering

Coverage survey, link budget, on-site field strength measurements and infrastructure sizing.

03Control rooms

Dispatch consoles, groups and priorities, communications recording and logging.

04Maintenance & supervision

Preventive, corrective, hotline, alarm management and operating reports, within a scope written into the contract.

§ 2 · Architecture

What lies behind a private radio network.

A radio network is not a batch of walkie-talkies. It is a chain of four layers, and each one must be sized.

Architecture of a multi-site DMR private radio network A dispatch console and the business applications, in the operations centre, are connected to the network core. The network core links a repeater on each site over IP or microwave link. Each repeater communicates by radio with the terminals on its site. OPERATIONS CENTRE SITE A SITE B LAN IP / FH radio radio 03 · SUPERVISION Dispatch console Mapping · log 04 · APPLICATIONS Location · alarms Lone worker · recording 03 · CORE Controller IP Site Connect 02 · REPEATERS SLR 8000 02 · REPEATERS SLR 5500 01 · FIELD R7 handhelds 01 · FIELD Mobiles DM4600e
Fig. — Typical architecture, multi-site DMR Wired / IP link Radio link Schematic diagram: the number of sites and the redundancy are set by the coverage survey.
  1. 01
    Field terminals

    Handheld radios, mobile radios and ATEX / IECEx certified terminals. The choice is based on the real environment: noise, shocks, dust, immersion, gloves.

  2. 02
    Radio infrastructure & transport

    Repeaters, duplexers, antennas and backup power. Sites are linked over IP or microwave link.

  3. 03
    Network core & dispatch

    Group and priority management, dispatch console, communications recording.

  4. 04
    Business applications

    Location tracking, lone worker protection, alarm forwarding, interfaces with your existing systems.

§ 4 · Approach

Six steps. Each with a deliverable that you keep.

A radio network is designed before it is bought. Each phase produces a document you keep, even if you do not continue with us.

  1. 01Operational scoping

    Who needs to talk to whom, from where, under what conditions. We start from use cases, not from a catalogue.

    Deliverable Formal radio requirements statement
  2. 02Coverage survey

    Modelling on your topography, link budget, on-site measurements. This is what sets the number of repeaters.

    Deliverable RF survey report with coverage maps
  3. 03Frequency licence

    Operating a private radio network in Côte d'Ivoire requires a frequency assignment from ARTCI. We prepare and follow the application.

    Deliverable ARTCI application followed through to assignment
  4. 04Deployment & integration

    Site and antenna installation, terminal programming, dispatch connection.

    Deliverable Acceptance report and frequency plan
  5. 05Team training

    Getting started with the terminals, operating the console, first-level procedures for your technicians.

    Deliverable Training materials and certificate
  6. 06Maintenance & operation

    Scheduled preventive maintenance, corrective maintenance on incidents, hotline and long-term fleet monitoring.

    Deliverable Contract and operating reports
Deliverable 02 · excerpt

What you receive, before you even sign.

Rather than a testimonial, the exact format of the report delivered after the coverage survey: areas covered per repeater, measurement points, received levels and verdict. The document remains yours, even if you do not continue with us.

Request a sample report
SIZEG AFRICA · ENGINEERING OFFICERadio coverage survey report
Ref. [EC-AAAA-NN]
Page [3] / [nn]
SITE[Site name]
TECHNOLOGYDMR Tier II
BANDUHF [xxx] MHz
MEASUREMENT DATE[DD/MM/YYYY]
P1P2P3R1
POINTRECEIVED LEVELVERDICT
P1[−xx] dBm[covered / marginal]
P2[−xx] dBm[covered / marginal]
P3[−xx] dBm[covered / marginal]
TEMPLATE · DATA TO BE COMPLETED
§ 5 · Business applications

What turns radio into an operational tool.

Voice is only part of the value of a radio network. These functions are activated on the infrastructure, depending on the terminals and licences selected.

A · Personal safety
  • Lone worker protection
  • Fall and no-movement alert, depending on terminal
  • Priority emergency call
  • Remote ambient listening
B · Location
  • Outdoor GPS, on maps
  • Indoor Bluetooth beacons
  • Guard tour and checkpoint management
  • Traceability with RFID tags
C · Supervision & data
  • Recording and playback
  • Technical alarm forwarding to terminals
  • Remote equipment management
  • Traffic and operating reports
D · Interoperability
  • Telephony and messaging gateways
  • Interfaces with your applications
  • Links between remote sites
  • 4G extension with WAVE PTX
§ 6 · By sector

Eight environments, eight architectures.

01Emergency & security

Encrypted TETRA or DMR networks, centralised dispatch, broadband terminals for teams outside coverage.

02Mining & industry

ATEX / IECEx terminals for zones 1 and 21, multi-site DMR networks, lone worker protection.

03Oil & gas

Refineries, depots and terminals: radios certified for explosive atmospheres, encrypted DMR or TETRA networks.

04Ports & airports

Coordination of many teams over large areas: TETRA DIMETRA or multi-site DMR, vehicle-mounted mobile radios.

05Hospitality & private security

Light, discreet radios, push-to-talk over 4G for mobile teams.

06Healthcare

Discretion and responsiveness: compact radios, emergency call, team location tracking.

07Humanitarian & NGOs

Rapid deployment, nationwide push-to-talk over 4G, repeater-based radio where the mobile network is lacking.

08Agriculture & conservation

Large areas and rural zones: repeaters on high points, GPS location, mobile radios for vehicles.

§ 7 · Existing fleets

Take over a fleet before replacing it.

An audit determines what can stay in service, what must be reprogrammed and what is reaching end of life. A gradual migration is almost always preferable to a wholesale replacement.

Scope: we sell only Motorola Solutions equipment, under our PartnerEmpower contract. We work on other manufacturers' equipment solely for the audit, interconnection or maintenance of an existing fleet, without being their partner.

§ 8 · Frequently asked questions

The questions technical managers ask.

DMR, TETRA or broadband: how to choose?

DMR (ETSI TS 102 361 standard) covers the vast majority of industrial needs: group voice, short data, controlled cost, long battery life.

TETRA is the choice when several organisations share a network with public safety requirements: high peak capacity, end-to-end encryption, priorities and pre-emption.

Broadband (WAVE PTX over 4G) extends communication to teams who leave the area covered by your infrastructure. Our guide compares the three technologies.

Is a licence required to operate a private radio network in Côte d'Ivoire?

Yes. The use of frequencies is subject to authorisation from ARTCI. Operating a network without an assignment exposes you to penalties and disrupts legitimate users of the band.

We prepare the application on your behalf and follow it through until it is granted. The frequency plan derives from the coverage survey: that is why step 03 comes after step 02.

How many repeaters are needed to cover my site?

It cannot be guessed. Range depends on topography, antenna height, authorised power, the band and obstacles: dense buildings, tunnels, metal structures, vegetation.

The coverage survey produces a field strength map and the exact sizing of the infrastructure. A number of repeaters quoted before seeing the site is a sales figure, not a technical one.

Can the radios already in the fleet be kept?

Often, at least in part. Other brands' DMR terminals can remain in service on a MOTOTRBO infrastructure in standard conventional mode, with limits on proprietary features: Tier III trunking, integrated location, certain encryption types.

The fleet audit determines what can be kept, what must be reprogrammed and what must be replaced.

What exactly does a maintenance contract cover?

Preventive maintenance (visits, site checks, power and VSWR measurements, power supplies), corrective maintenance (diagnosis and return to service), the hotline, alarm management and operating reports.

The scope is set in the contract: infrastructure only or with terminals, business hours or on-call, with or without replacement equipment.

How long does a deployment take?

On a single site, commissioning takes a matter of weeks once the equipment is available and the authorisation obtained.

The two real lead-time factors are the processing of the ARTCI application and equipment procurement, as it is not stocked in Abidjan. We state them from the scoping stage, and the coverage survey can start in parallel.

Your radio project

Let's start with the coverage survey.

Describe your scope: sites to cover, staff to equip, environmental constraints. An engineer will call you back within 24 business hours.