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Brother MFC-J3940DW User Manual

Brother MFC-J3940DW
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Home > Fax > Telephone Services and External Devices > Voice Over Internet Protocol (VoIP/Telephone
Line Interference)
Voice Over Internet Protocol (VoIP/Telephone Line Interference)
VoIP is a type of phone system that uses an Internet connection instead of a traditional telephone line. Telephone
providers frequently bundle VoIP together with Internet and cable services.
Your machine may not work with some VoIP systems. If you want to use your machine to send and receive faxes
on a VoIP system, make sure one end of your telephone cord is connected to the socket labelled LINE on your
machine. The other end of the telephone cord may be connected to a modem, phone adapter, splitter, or other
such device.
If you have questions about how to connect your machine to the VoIP system, please contact your VoIP
provider.
After you have connected your machine to the VoIP system, check for a dial tone. Lift the external telephone's
handset and listen for a dial tone. If there is no dial tone, please contact your VoIP provider.
If you are having problems sending or receiving faxes over a VoIP system, we recommend changing the
machine’s modem speed to the [Basic(for VoIP)] setting.
VoIP (Voice over IP) is a type of phone system that uses an Internet connection, rather than a traditional
phone line.
Brother does not recommend the use of a VoIP line. VoIP limitations in general can cause some
functions of the fax machine not to work correctly.
Related Information
Telephone Services and External Devices
Related Topics:
Telephone Line Interference/VoIP
239

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Brother MFC-J3940DW Specifications

General IconGeneral
Card reader integratedNo
Sound power level (printing)65.4 dB
Sound pressure level (printing)50 dB
Scan toE-mail, E-mail Server, FTP, File, Image, OCR, USB
Scan driversSANE, TWAIN, WIA
Scanner typeADF scanner
Duplex scanningYes
Grayscale levels256
Input color depth48 bit
Output color depth24 bit
Input grayscale depth16 bit
Output grayscale depth8 bit
Maximum scan resolution19200 x 19200 DPI
Optical scanning resolution1200 x 2400 DPI
N-up printing2, 4, 9, 16
Print technologyInkjet
Maximum resolution4800 x 1200 DPI
Duplex printing modeAuto/Manual
Print speed (ISO/IEC 24734) mono28 ipm
Print speed (ISO/IEC 24734) color21 ipm
Time to first page (black, normal)4.4 s
Time to first page (color, normal)4.6 s
Print speed (black, normal quality, A4/US Letter)- ppm
DisplayLCD
Control typeButtons, Touch
Product colorGray
Display diagonal3.5 \
Market positioningHome & office
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technology10/100Base-T(X)
Security algorithms802.1x RADIUS, APOP, SMTP-AUTH, SNMPv3, SSL/TLS
Ethernet LAN data rates10, 100 Mbit/s
Mobile printing technologiesApple AirPrint, Brother iPrint & Scan, Google Cloud Print, Mopria Print Service
Printing colorsBlack, Cyan, Magenta, Yellow
Duplex functionsCopy, Fax, Print, Scan
Maximum duty cycle- pages per month
Number of print cartridges4
Copier resize25 - 400 %
Maximum copy resolution600 x 600 DPI
Maximum number of copies999 copies
N-in-1 copy function (N=)2, 4
Time to first copy (black, normal)5 s
Time to first copy (color, normal)6 s
Package depth561 mm
Package width681 mm
Package height493 mm
Package weight26600 g
Quantity per pack1 pc(s)
Paper input typePaper tray
Total input capacity650 sheets
Paper tray 1 input capacity250 sheets
Multi-Purpose tray input capacity100 sheets
Auto document feeder (ADF) input capacity50 sheets
Cables includedPhone
FaxingColor faxing
Fax memory150 pages
Modem speed33.6 Kbit/s
Fax forwarding toE-mail, Fax, PC
Fax speed dialing (max numbers)150
AC input voltage220 - 240 V
Power consumption (off)0.03 W
Power consumption (sleep)0.9 W
Power consumption (copying)29 W
Power consumption (standby)6 W
Envelopes sizesCom-10, DL, Monarch
Photo paper sizes9x13, 10x15, 13x18 cm
Custom media width105 - 297 mm
Custom media length148 - 431.8 mm
Paper tray media typesCoated paper, Envelopes, Glossy paper, Photo paper, Plain paper, Recycled paper
ISO A-series sizes (A0...A9)A3, A4, A5, A6
Maximum ISO A-series paper sizeA3
Multi-Purpose Tray media weight64 - 220 g/m²
Auto Document Feeder (ADF) media weight64 - 120 g/m²
Mac operating systems supportedMac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.15.3 Catalina, Mac OS X 10.9 Mavericks, Mac OS X 11.0 Big Sur
Other operating systems supportedChromeOS
Server operating systems supportedWindows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Windows operating systems supportedWindows 10, Windows 7, Windows 8, Windows 8.1
Weight and Dimensions IconWeight and Dimensions
Depth477 mm
Width576 mm
Height375 mm

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