Frequently asked questions

ROI International is a Phoenix-headquartered low-voltage integrator that installs fiber optic cabling across Arizona. We handle single-mode and multimode design, fusion splicing, termination, and certified OTDR testing for commercial, government, and enterprise networks.

Single-mode fiber (OS2) uses a small 9-micron core to carry light long distances with very low loss, making it ideal for campus backbones, carrier links, and runs over a few hundred meters. Multimode fiber (OM3/OM4/OM5) has a larger core that is cost-effective for shorter, high-bandwidth runs inside buildings and data centers. ROI specifies the right fiber for each link based on distance, bandwidth, and budget.

Yes. Every fiber installation includes Tier 1 insertion-loss testing, and Tier 2 OTDR testing where required, with documented certification reports so you have a verified record of performance for warranty and compliance.

Yes. ROI provides fusion splicing, fiber repair, and emergency restoration to bring damaged or degraded links back to certified performance with minimal downtime.

Cat6 supports 1 Gigabit Ethernet and 10G over short distances (up to 55 meters) at 250 MHz, while Cat6A supports full 10 Gigabit Ethernet up to 100 meters at 500 MHz with better shielding against crosstalk. ROI typically recommends Cat6A for new builds, PoE devices, and any infrastructure that needs to support 10G in the future, and Cat6 where budget and current needs make it the right fit.

Yes. We test every cable run with a calibrated cable certifier (such as Fluke) and provide documented permanent-link or channel certification reports, which are typically required for manufacturer warranties and IT acceptance.

Yes. ROI routinely performs structured cabling, moves/adds/changes, and telecom-room cleanups in live, occupied facilities — scheduling around your operations and after-hours when needed to avoid disruption.

Yes. We install PoE-capable Cat6/Cat6A cabling sized and tested for Power over Ethernet so the same infrastructure can power IP cameras, wireless access points, access-control devices, and other IoT endpoints.

An RF site survey measures how wireless signals actually behave in your space — accounting for walls, racks, interference, and user density — so access points are placed for reliable coverage and capacity instead of guesswork. ROI performs predictive and on-site surveys with heat maps to engineer coverage before installation and validate it afterward.

WiFi 6 (802.11ax) improves speed, efficiency, and performance in high-density environments over the 2.4 GHz and 5 GHz bands. WiFi 6E extends WiFi 6 into the newer 6 GHz band, providing more clean spectrum and less congestion for dense deployments. ROI specifies the right standard based on your devices and environment.

Yes. ROI designs and installs high-coverage wireless for large warehouses, distribution centers, and outdoor yards using ruggedized and directional access points, with cabling and backhaul engineered for the environment.

Yes. We run and certify the PoE Cat6/Cat6A cabling that powers and connects every access point, so your wireless and wired infrastructure are installed and supported together by one partner.

It depends on your facility size, the areas you need to cover, lighting conditions, retention requirements, and whether you want analytics. ROI assesses your site and designs a system — camera types, placement, recording, and storage — that delivers usable footage where it matters, rather than overspending on cameras you don't need.

Yes. ROI configures secure remote viewing so you can monitor live and recorded video from web browsers and mobile apps, with user permissions so the right people see the right cameras.

Retention is determined by camera count, resolution, frame rate, and storage capacity. ROI sizes your NVR/VMS or cloud storage to meet your required retention period — commonly 30 to 90 days, and longer for compliance-driven environments.

Yes. ROI integrates video surveillance with access control so events — like a door forced or a credential used — are linked to recorded video, giving you a unified, searchable security picture from a single provider.

An access control system replaces or augments physical keys with electronic credentials — cards, fobs, mobile phones, PINs, or biometrics. Readers at each door check the credential against rules you set (who, where, and when), then unlock electrified hardware if access is allowed, while logging every event for audit. ROI designs, installs, and configures the readers, controllers, locks, and software.

Yes. ROI deploys cloud-based and enterprise access control that lets you manage credentials, doors, schedules, and reporting across many sites from a single dashboard — ideal for organizations with multiple buildings or locations.

Lost or former-employee credentials are revoked instantly from the management software — no need to rekey locks. You can also issue temporary or scheduled access for contractors and visitors, and pull an audit trail of exactly who accessed which door and when.

Yes. ROI installs mobile-credential systems that let staff unlock doors with their smartphone over Bluetooth or NFC, which reduces the cost and hassle of managing physical cards while improving security.

Sound masking is the addition of a specifically engineered, ambient background sound — similar to soft airflow — distributed evenly through a space. It raises the background sound level just enough to make nearby speech harder to understand and less distracting, which improves speech privacy and focus. It does not cancel noise; it makes intrusive sounds less noticeable. ROI installs and calibrates the emitters and controllers to the correct masking spectrum.

Sound masking helps any environment where overheard conversations are distracting or confidential. It is especially valuable in open-plan offices, healthcare and behavioral-health settings, law and financial firms, HR areas, and call centers — anywhere speech privacy, focus, or confidentiality matters.

No. Generic white noise is uniform across all frequencies and is perceived as harsh. Sound masking uses a carefully shaped spectrum tuned to the frequencies of human speech, then calibrated to your space so it is effective yet barely noticeable. Proper engineering and tuning are what make it work.

Yes. By reducing the intelligibility of overheard speech, sound masking supports HIPAA-conscious speech-privacy goals in healthcare and confidentiality needs in legal, financial, and HR environments. ROI designs systems calibrated to improve speech privacy in the areas that need it.