iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Broadband phone service is voice calling carried over a broadband internet connection, usually through Voice over Internet Protocol (VoIP). In the United States, the FCC’s narrower regulatory category is interconnected VoIP: it requires real-time, two-way voice, broadband at the user’s location, IP-compatible customer equipment and, generally, the ability to call to and receive calls from the traditional public switched telephone network (PSTN).
What is broadband phone service?
The phrase generally describes a phone service that sends voice calls over a broadband internet connection instead of relying solely on a traditional telephone network. VoIP is the technology commonly associated with this kind of calling.
In U.S. regulation, the more precise term is interconnected VoIP. Federal regulation defines it as a service that enables real-time, two-way voice communications, requires a broadband connection from the user’s location and internet protocol-compatible customer-premises equipment (CPE), and generally permits users to receive calls originating on and place calls to the PSTN. See 47 CFR § 9.3.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThis regulatory definition is specific to the United States. The broader phrase “broadband phone service” may be used in other contexts, and the FCC definition should not be assumed to determine the scope of similar terms in other countries.
#1 Best Overall
- UNLIMITED CALLING, NO MONTHLY BILLS: Enjoy 12 months of free local and long-distance calls to the U.S., Canada, Puerto Rico, and the Virgin Islands—plus Caller ID, Voicemail, Call Waiting, Call Forwarding, and Conference Calling—all included with no hidden fees. Save big compared to traditional phone services
- WORK-FROM-HOME READY: Experience crystal-clear calls with upgraded voice quality, even on busy networks. Features a faster CPU (4x speed) and more memory for reliable performance—perfect for remote work or home office needs
- FREE MOBILE APP FOR ON-THE-GO CONVENIENCE: Download the magicJack app to make unlimited calls and send texts to U.S. numbers from your smartphone. Syncs with your home phone to ring both devices simultaneously—stay connected anywhere!
- EASY SETUP, VERSATILE USE: Plug into your high-speed internet and any cordless or landline phone—or use with your computer. Comes with step-by-step instructions, ethernet cord, USB extension, and power adapter for hassle-free installation.
- KEEP YOUR NUMBER & TRUSTED QUALITY: Port your existing number for a one-time $19.95 fee and enjoy free magicJack-to-magicJack calls worldwide, low international rates, and a 1-year warranty. Buy new from magicJack for a guaranteed working unit—avoid used devices!
Is broadband phone service the same as VoIP?
They overlap, but the terms are not interchangeable in every context. VoIP refers broadly to voice communication using internet protocol. “Broadband phone service” commonly refers to voice calling delivered over broadband. The FCC’s interconnected VoIP category adds specific criteria, including two-way real-time communication and general connectivity with the PSTN.
Not every internet calling app necessarily meets that regulatory definition. The relevant question is whether the service meets the FCC’s criteria, not simply whether it uses the internet to carry voice.
Rank #2
- Supports 2 SIP profiles through 2 FXS ports and a single 10/100Mbps port
- TLS and SRTP security encryption technology to protect calls and accounts
- Automated provisioning options include TR-069 and XML config files
- LED indicators - POWER, NET, PHONE1, PHONE2 Supports 3-way voice conferencing Failover SIP server automatically switches to secondary server if main server loses connection
- Supports T.38 Fax for creating Fax-over-IP
Does broadband phone service need internet?
Yes. Broadband connectivity is part of the service: the FCC describes interconnected VoIP as requiring a broadband connection from the user’s location. The FCC’s guidance puts it this way: “Another way to think about this is that interconnected VoIP service requires a high-capacity, or broadband, connection from the end user’s location.” The guidance appears in the FCC Broadband Data Collection Help Center’s “How to Allocate VoIP Subscriptions”, updated March 3, 2025.
Is the phone service provider also the internet provider?
Not necessarily. The broadband connection and the voice service are distinct, even when one company supplies both. FCC reporting guidance distinguishes over-the-top VoIP subscriptions, where the VoIP provider does not also sell the connection carrying the service, from other subscriptions delivered over last-mile facilities supplied by the provider. In the latter category, the provider may also sell internet access.
Rank #3
- Supports 2 SIP profiles and 2 FXS ports
- Strong AES encryption with security certificate per unit
- Supports T.38 Fax for reliable Fax-over-IP
- High performance NAT router
- 3-way voice conferencing per port
So a broadband phone service can use an internet connection from a separate broadband provider, or it can be offered by a provider that also supplies the underlying last-mile connection. The distinction is about how the service is delivered and who supplies the connection; it does not change the basic idea of voice calling over broadband.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What equipment does broadband phone service require?
The FCC definition requires IP-compatible customer-premises equipment, but it does not prescribe one universal handset, router, adapter or equipment model. The required setup depends on the particular service. The regulatory definition establishes a compatibility requirement, not a universal device purchase.
Quick Recap
Best Value
- Polycom OBI 300 Voice Adapter USB 1 FXS ATA, PY-2200-49530-001
- Item Package Dimension: 8.070L x 4.88W x 1.53H inches
- Item Package Weight - 0.52 Pounds
- Compatibility: Compatible with Google Workspace Voice Paid Version ONLY, Will NOT Work With Free Version. Setup is done on workspace admin not obitalk.
- Product Type - ELECTRONIC ADAPTER
Rank #4
- EXTEND CELL PHONE SERVICE TO HOME PHONES: Transform your traditional landline into a smart communication hub. The CELL2JACK cellphone to home phone adapter allows you to use your existing home phones to make and receive mobile calls and access Siri or Google Assistant, all without needing a new phone setup. This Bluetooth landline adapter is ideal for both corded and cordless models, including rotary and senior-friendly phones with big buttons.
- ELIMINATE CELLPHONE RADIATION: Reduce your exposure to harmful cellphone radiation with CELL2JACK cell phone to landline adapter. This innovative device allows you to use your landline for mobile calls, minimizing your exposure to potential radiation that could have cancer-causing effects. It’s a health-conscious choice for any household aiming to decrease electromagnetic pollution without compromising on connectivity.
- SUPERIOR SIGNAL STRENGTH ANYWHERE: Overcome poor cellphone reception with the cell to jack landline adapter. Place your cellphone where the signal is strongest and use your home phone for clear and reliable communication in any part of your house. Our cell phone to landline converter is perfect for homes with spotty cellular coverage, ensuring you never miss an important call due to weak mobile signals.
- ALL TYPES OF TELEPHONES SUPPORTED: The CELL2JACK Cell phone to landline dock supports all types of analog landline phones, including corded, cordless, desktop, rotary, and caption phones. This cell phone to home phone adapter allows you to make and receive cell phone calls with any home telephone, integrating modern mobile technology into every style of phone in your household, allowing you to make and receive cell phone calls effortlessly.
- SMART HOME INTEGRATION: CELL2JACK cellphone to landline home phone adapter enhances your home automation by enabling control of smart home devices via your landline phone. Easily manage lights, fans, TV, and other smart devices through voice commands or phone controls, integrating with both Siri and Google Assistant. This feature brings home automation capabilities through your existing landline, enhancing user convenience and control.
What to check when evaluating a service
- Connection: Identify which company supplies the broadband connection used for calls.
- Service arrangement: Determine whether the voice service is over-the-top or delivered over last-mile facilities supplied by the voice provider.
- Equipment: Check which IP-compatible customer equipment the provider requires for its service.
- Calling capability: If the U.S. regulatory category matters, check whether the offering supports the general ability to receive PSTN-originated calls and terminate calls to the PSTN.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
