Hardware & Cloud Setup · 2027 Guide

How to Fax From an HP, Brother, Canon or Epson Printer Without a Phone Line

By the Attajer Editorial Team · 12 min read · Tested on HP OfficeJet, Brother MFC, Canon PIXMA & Epson WorkForce

Direct Answer: You cannot press the physical “Fax” button on a multifunction printer without a phone cord plugged into its rear RJ-11 LINE jack, because the internal fax modem only generates analog audio tones. However, you can fax from any HP, Brother, Canon, or Epson printer without a phone line over Wi-Fi by using the printer’s scanner (or Scan-to-Email) to capture a PDF and transmitting it via Fax.plus (first 10 pages free, no landline required).

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You bought an all-in-one printer with a 35-sheet Automatic Document Feeder (ADF) and a prominent FAX button on the control panel—only to get home and realize your house or office no longer has a copper wall jack. When you try to dial a number on the touchscreen, the printer throws a No Dial Tone or Check Tel Line error.

In 2027, fewer than 18% of U.S. households and under 29% of small offices maintain a traditional PSTN copper telephone circuit (POTS). Fortunately, you do not need to pay AT&T, Verizon, or Lumen $65/month for an analog phone line—or spend $55 on a flaky VoIP analog telephone adapter—just to put your printer’s document feeder to work. This technical guide walks through the four proven methods to fax from a printer without a phone line, complete with brand-by-brand steps for HP, Brother, Canon, and Epson hardware.

Why Your Printer’s Built-In “Fax” Button Fails Over Wi-Fi

Every four-in-one multifunction printer (MFP)—such as the HP OfficeJet Pro 9125e, Brother MFC-L2820DW, Canon PIXMA TR8620a, or Epson WorkForce Pro WF-4830—contains two completely separate networking boards inside its chassis:

The Digital Network Interface (Wi-Fi 802.11ac/ax & RJ-45 Ethernet): Speaks TCP/IP, AirPrint, SMB, and HTTPS to your wireless router for printing and scanning.
The Legacy Analog Fax Modem (ITU-T V.34 / V.17 at 33.6 kbps): Hardwired exclusively to the 6-pin RJ-11 LINE port on the back of the machine. It converts scanned 1-bit TIFF images into audible screeching tones designed to travel across a 48-volt DC copper telephone loop.

Because printer manufacturers keep these two subsystems isolated on the motherboard, pressing the hardware Fax button on the printer’s bezel bypasses your Wi-Fi connection entirely and listens for a 350Hz/440Hz analog dial tone on the RJ-11 jack. To send a fax without a dedicated fax line, you simply shift the dialing step from the printer’s legacy 1990s modem to an encrypted cloud fax trunk.

Comparison: 4 Ways to Fax From a Printer Without a Landline in 2027

Compare the reliability, hardware cost, incoming fax capability, and setup time across all four landline-free printer fax architectures:

Method	How It Works	Upfront Hardware Cost	Monthly Cost	Multi-Page Reliability	Can Receive Faxes?
1. Wi-Fi Scan to PDF + Fax.plus ⭐	Scan stack via ADF over Wi-Fi → Upload to Fax.plus	$0	$0 (10 pgs) / $6.99/mo	99.9% (Cloud PSTN)	Yes (On paid plans)
2. Printer Scan-to-Email (SMTP)	One-touch printer button emails PDF to `[number]@fax.plus`	$0	$6.99/mo	99.9% (Cloud PSTN)	Yes (Auto-forwarded)
3. Vendor App (HP Mobile Fax)	Proprietary outbound fax tab inside HP Smart app	$0 (HP printers only)	Trial / Paid subscription	96.5%	No (Outbound only)
4. VoIP ATA Adapter (Cisco / OBi)	Plugs printer RJ-11 cord into router via SIP/T.38 box	$55 – $110 + SIP trunk	$10 – $25/mo	62% – 78% (Drops packets)	Hit-or-miss

Brand-by-Brand Setup Guide: HP, Brother, Canon & Epson

Follow the exact instructions for your printer manufacturer below to scan multi-page stacks through your Automatic Document Feeder (ADF) and transmit them over Wi-Fi.

1. How to Send a Fax From an HP Printer (OfficeJet Pro, LaserJet & ENVY)

Users searching for send fax HP printer or HP Mobile Fax typically own an HP OfficeJet Pro (8025e, 9015e, 9125e, 9135e), an HP LaserJet Pro MFP (M283fdw, M428fdw, 4101fdw), or an HP ENVY Inspire. You have two cordless workflows on HP hardware:

Option A: HP Smart Wi-Fi Scan + Fax.plus (Recommended for 2-Way Faxing & 10 Free Pages)

Load the ADF: Place up to 35 sheets face-up in your HP printer’s top Automatic Document Feeder (or 1 sheet face-down on the glass).
Scan over Wi-Fi: Open the HP Smart app on Windows, macOS, iOS, or Android, click the Printer Scan tile, set Document Type to Document (PDF), Color to Black & White, and Resolution to 200 DPI, then click Scan and save the file.
Transmit via Fax.plus: Open Fax.plus in your browser or mobile app, enter the destination fax number, drop in the scanned PDF, and click Send. You receive 10 free pages immediately and an emailed PDF confirmation sheet you can print back to your HP printer.

Option B: Built-In HP Mobile Fax (Limitations & 2027 Status)

HP includes a feature called HP Mobile Fax inside the HP Smart software suite. While convenient for a quick test, HP Mobile Fax has three major constraints in 2027:

Strictly Outbound-Only: HP Mobile Fax never gives you an incoming fax number. If a doctor’s office, title company, or court clerk needs to fax a signed form back to your HP printer, HP Mobile Fax cannot receive it.
No Direct Panel Dialing: Even with HP Mobile Fax enabled, you still cannot type a phone number onto the printer’s physical LCD screen—you must initiate the job inside the HP Smart software on a phone or PC.
Hardware Lock-In: Your fax history is tied to your HP account and specific printer ecosystem, whereas faxing from a computer with Fax.plus works across any scanner, smartphone camera, or Google Drive folder.

2. Brother Printer Fax Over Internet (MFC & DCP Laser / Inkjet Models)

Brother all-in-ones—such as the workhorse Brother MFC-L2750DW, MFC-L2820DW, MFC-L3780CDW, and MFC-J4335DW—are legendary for their fast single-pass duplex document feeders. Brother offers two distinct ways to run Brother printer fax over internet without an RJ-11 cord:

Method A: Brother iPrint&Scan to Cloud Fax (Zero Configuration)

Launch Brother iPrint&Scan on your PC, Mac, or smartphone connected to the same Wi-Fi network as your Brother MFC.
Click Scan → select Document Feeder (ADF), 200×200 dpi, Black & White → click Save to PC (PDF).
Upload the resulting multi-page PDF to Fax.plus and transmit.

Method B: Brother Scan-to-Email Server (One-Touch LCD Button via Email-to-Fax)

If your Brother laser MFP supports Scan to Email Server (SMTP) or Brother Internet Fax (I-Fax / T.37), you can turn your printer’s touchscreen into a standalone internet fax station without turning on a computer:

Open a browser and type your Brother printer’s local IP address (e.g., https://192.168.1.50) to open Brother Web Based Management.
Navigate to Network → Protocol → POP3/IMAP/SMTP and enter the SMTP credentials for the email address registered on your Fax.plus Email-to-Fax account (e.g., a Gmail App Password on smtp.gmail.com port 587 with TLS).
In the Brother Address Book, save frequent fax recipients using the syntax +12125550199@fax.plus.
Now, anyone in your office can drop paper into the Brother feeder, tap Scan → to Email Server on the printer touchscreen, pick the recipient, and press Start. The printer emails the scanned PDF over Wi-Fi directly to the Fax.plus PSTN gateway, which converts and dials the remote fax machine automatically!

3. Canon PIXMA & imageCLASS Printers (IJ Scan Utility & Scan-to-Email)

Canon splits its fax-capable hardware into home office inkjets (Canon PIXMA TR4720, TR8620a, MAXIFY GX7021) and small business lasers (Canon Color imageCLASS MF656Cdw, MF465dw).

On Canon PIXMA & MAXIFY (Home Office): Open Canon IJ Scan Utility on your computer (or the Canon PRINT mobile app), click the ADF / Document button to pull all pages into a consolidated PDF in your Documents folder, and upload the PDF to Fax.plus.
On Canon imageCLASS Laser MFPs (Small Business): Log into the Canon Remote UI via the printer’s IP address, configure E-mail/I-Fax Settings with your SMTP server, and program a One-Touch Speed Dial button on the Canon home screen pointing to [fax-number]@fax.plus. You can even set incoming faxes in Fax.plus to forward to an email inbox that your Canon imageCLASS polls via POP3 to auto-print incoming faxes onto paper!

4. Epson EcoTank & WorkForce Pro Printers (Epson ScanSmart & Smart Panel)

If you own an Epson EcoTank ET-4850, ET-5850, or WorkForce Pro WF-3820 / WF-4830 / WF-7840, the annoying orange Fax Line Disconnected warning can be cleared in two minutes:

Disable Line Check Warning: On the Epson touchscreen, go to Settings → General Settings → Fax Settings → Basic Settings → Line Type, and turn off Dial Tone Detection so the status light stops flashing.
Scan via Epson ScanSmart: Load your sheets into the top ADF, launch Epson ScanSmart on Windows/Mac (or Epson Smart Panel on iOS/Android), click Scan, then click Save as PDF.
Send via Cloud Fax: Drag the PDF into your Fax.plus web dashboard and send.

Why VoIP Adapters (Cisco SPA112, OBi200, Xfinity & Ooma) Fail on Multi-Page Printer Faxes

Many users try to trick their printer’s analog RJ-11 port by plugging the phone cord into a residential VoIP modem (Comcast Xfinity Voice, Spectrum Voice, AT&T Fiber Phone), an Ooma Telo, a MagicJack, or a SIP Analog Telephone Adapter (ATA) like the Cisco SPA112 or Grandstream HT801. Then they wonder why 1-page faxes occasionally succeed while 8-page faxes fail on Page 4 with Communication Error (Code 388 / NG).

Here is the exact telecommunications engineering reason why fax over VoIP fails on physical printers:

Codec Compression & Packet Jitter: Analog fax modems negotiate an ITU-T V.34 or V.17 carrier at 14,400 to 33,600 bits per second, expecting a continuous, zero-jitter analog waveform. Standard VoIP compresses audio with voice codecs (G.729) or suffers 15–40 milliseconds of UDP packet jitter across your home ISP router. A single out-of-order 20ms packet causes the receiving fax machine to lose phase lock and drop the call.
Why the “9,600 Baud + ECM Off” Workaround Is Broken: Printer manuals tell VoIP users to enter the printer’s Fax Service Menu, throttle the speed down from 33.6 kbps (Fast) to 9,600 bps (Slow), and turn Error Correction Mode (ECM) OFF. Wait—disabling ECM means that when a VoIP packet drops, the printer simply stops retransmitting corrupted scan lines, delivering a page to the IRS or hospital with horizontal black streaks and unreadable numbers!
Lack of End-to-End T.38 Fax Relay: Unless your ATA hardware, your SIP trunk provider, and every intermediate carrier hop negotiate real-time ITU-T T.38 Fax-over-IP (FoIP) packet encapsulation, analog tones over VoIP remain fundamentally unreliable.

By scanning over Wi-Fi and transmitting via cloud faxing instead of a physical phone line, your PDF travels over error-checked HTTPS/TCP to a carrier data center, where enterprise PSTN gateways inject the signal directly into the backbone telephone network with 99.9% first-try completion.

3 Real-World Home Office & Small Business Printer Case Studies

See how three different users retired their copper phone jacks while keeping their existing multifunction printers in daily service:

Case Study 1: Home Office CPA With an HP OfficeJet Pro 9125e (Saving $780/Year)

Hardware & Problem: An independent tax preparer in Ohio moved her office to a fiber-internet home with no copper telephone wiring. Her local telecom quoted $65/month ($780/year) plus a $149 installation fee to install a single analog business POTS line for her HP OfficeJet Pro 9125e.
Cloud Printer Solution: She connected the HP OfficeJet Pro 9125e exclusively to her Wi-Fi 6 router and ported her existing 15-year client fax number into a Fax.plus Basic plan ($6.99/month). When clients mail physical W-2s and signed Form 2848s, she drops the stack into the HP’s 35-sheet ADF, scans to PDF via HP Smart in 18 seconds, and sends via the Fax.plus web app.
Net Result: $696.12 saved every year (89% cost reduction), zero dropped IRS transmissions, and incoming client faxes land directly in her encrypted email inbox as searchable PDFs instead of wasting expensive HP 936 ink cartridges on junk faxes.

Case Study 2: Dental Practice With a Brother MFC-L2750DW on Comcast Business VoIP

Hardware & Problem: A 4-chair pediatric dental clinic plugged its Brother MFC-L2750DW laser printer into the analog RJ-11 port of a Comcast cable voice modem. Multi-page insurance pre-authorizations (8 to 14 pages with radiograph attachments) failed 42% of the time on Page 5, forcing front-desk staff to stand at the machine redialing for 25 minutes.
Cloud Printer Solution: The office unplugged the RJ-11 phone cord from the Brother printer and configured Brother Scan-to-Email (SMTP) pointing to their HIPAA-compliant Fax.plus account. Now the receptionist loads 12 pages into the Brother ADF, taps the insurer’s preset on the Brother LCD screen, and walks away immediately.
Net Result: First-attempt delivery rate jumped from 58% to 99.8%, front-desk staff reclaimed 3.5 hours per week, and every outbound insurance claim generates a downloadable HIPAA audit log.

Case Study 3: Remote Employee Faxing a 6-Page Benefits Packet From an Epson EcoTank ET-4850

Hardware & Problem: A remote software engineer in Seattle needed to fax a 6-page wet-signed COBRA and HSA rollover packet from his home Epson EcoTank ET-4850, which had never been plugged into a phone jack.
Cloud Printer Solution: He loaded the 6 signed sheets into the Epson ET-4850 top feeder, clicked Scan → Save as PDF in Epson ScanSmart on his MacBook, signed up for the Fax.plus Free Tier (10 complimentary pages), and transmitted the 6-page PDF to the benefits administrator’s 800-number.
Net Result: Total expenditure of $0.00, zero phone lines or adapters purchased, and a printed confirmation receipt produced on his Epson printer 2 minutes later.

Frequently Asked Questions: Faxing From a Printer Without a Landline

Can an HP, Brother, Canon, or Epson all-in-one printer send a fax over Wi-Fi without a phone line?

A multifunction printer's built-in hardware fax modem (the RJ-11 LINE port on the back) cannot dial over Wi-Fi because it generates analog ITU-T V.17/V.34 audio tones that require a copper telephone circuit. However, you can fax from any wireless printer without a phone line by scanning your document over Wi-Fi to a PDF or via Scan-to-Email and transmitting it through a cloud fax gateway like Fax.plus.

How do I send a fax from an HP printer without a landline?

You have two options to send a fax from an HP printer without a phone line: (1) Open the HP Smart app, scan your pages over Wi-Fi, and upload the PDF to Fax.plus (which gives you 10 free pages and allows incoming faxes on paid tiers), or (2) Use the HP Mobile Fax feature inside the HP Smart app for outbound-only faxes.

Is HP Mobile Fax still free in 2027, and can it receive faxes?

HP Mobile Fax has restricted its promotional trial tiers and remains strictly an outbound-only tool—it does not assign you a dedicated fax number and cannot receive incoming faxes. By contrast, Fax.plus includes 10 permanent free outbound pages on signup and provides a dedicated incoming/outgoing fax number starting at $6.99/month.

How do I set up Brother printer fax over internet (I-Fax / Scan-to-Email)?

On Brother MFC and DCP printers, you can use Brother iPrint&Scan on your computer or phone to scan multi-page documents from the Automatic Document Feeder (ADF) over Wi-Fi, then send them via Fax.plus. Alternatively, on Brother business laser models supporting Scan-to-Email (SMTP), link your email address to a Fax.plus account and set a one-touch preset targeting [10-digit-number]@fax.plus.

Why does my printer fail on page 3 when connected to a VoIP adapter or cable modem?

Residential VoIP lines (Comcast Xfinity Voice, Spectrum, AT&T Digital Phone, Ooma, MagicJack) compress audio using G.729 or Opus codecs and introduce 20–50ms of packet jitter. When an analog fax modem hears a single dropped packet, it drops the carrier handshake. Lowering your printer's baud rate to 9,600 bps and disabling Error Correction Mode (ECM) helps on 1-page faxes, but cloud faxing via T.38/PSTN gateways is the only 99.9% reliable fix.

Can I plug a cellular hotspot or Ethernet cable into my printer's RJ-11 phone jack?

Never plug an Ethernet cable (RJ-45) into or force a network line into a printer's RJ-11 telephone jack, as Power-over-Ethernet or mismatched voltages can damage the analog modem board. Connect your printer to your router via Wi-Fi or the separate RJ-45 Ethernet port, and use cloud faxing to route documents over the internet.

How do I get a printed confirmation report when faxing from a printer without a landline?

When you scan from your HP, Brother, Canon, or Epson printer and transmit via Fax.plus, the platform emails you a timestamped PDF Transmission Verification Report containing the recipient CSID, page count, duration, and thumbnail of Page 1. You can print that confirmation sheet directly to your wireless printer in one click.

What is the cheapest way to replace my office printer's dedicated $60/month copper fax line?

Cancel the $55–$75/month analog POTS landline and port your existing fax number to Fax.plus ($6.99 to $13.99/month). Keep using your existing multifunction printer's high-speed Automatic Document Feeder (ADF) as a Wi-Fi network scanner to convert paper stacks into PDFs.

Attajer Editorial Team

Expert reviews of online fax services since 2024. We’ve independently tested 15+ fax services and helped 50,000+ users find the right solution for their business.

Published: September 2026 Updated: November 2026