Developers of the CEL-FI® SMART SIGNAL BOOSTER

04/22/2023 Confidential

DONDE USAR CEL-FI

Developers of the CEL-FI® SMART SIGNAL BOOSTER

April 22, 2023 Confidential

Perfect to use Cel-Fi

• One bar of 3G or LTE signal somewhere within the building => at least -104 dBm RSCP in UMTS or -120 dBm RSRP in LTE

AND• Bad coverage in big areas of the building (one or no bars/no

service ) => signal levels are poor throughout the building , with levels in -90 to -120 dBm RSCP, -100 to -130 dBm RSRP.

Developers of the CEL-FI® SMART SIGNAL BOOSTER

April 22, 2023 Confidential

Where NOT to use Cel-Fi

• Only 2G signal available• Outdoors• Too close (<30 m) to a base station (own operator or

competitor)• Too close (<1 m) to a router or any other radiating/electronic

equipment

Developers of the CEL-FI® SMART SIGNAL BOOSTER

April 22, 2023 Confidential

Where a professional installation is required

• More than one Cel-Fi system (systems in parallel or in series)• Very weak input signal and/or with high variations (may

require external antenna)• High interference (Ec/Io consistently over -14 dB) : may

require external antenna or careful selection of donor BTS. • High rise buildings: normally would have high interference• Difficult connectivity for the 5 GHz link (thick or metal walls,

like a boat, high interference in 5GHz, due i.e to a radar…). May require cable accessory to interconnect the units.

• Locations where there is an existing indoor system or donor is not the standard macro: DAS, Small Cells, DRS…

Developers of the CEL-FI® SMART SIGNAL BOOSTER

April 22, 2023 Confidential

Use case recommendations

Small appartment <80m2

Large appartment > 80 m2

House 100-500 m2 1-3 floors

Very large house >500 m2

Limited performance Good Good

Professional installation

Small offi ce <100m2

Midsize offi ce 100-1000 m2

Large offi ce 1000-3000 m2

Offi ce building >3000 m2

Limited performance Good

Professional installation

Other solutions can be optimal