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VoIP Assistant
Brother Fax-Capable Machines and VoIP
All fax-capable Brother machines (Intellifax and Multi-Function Centers) are designed to operate on a Public Switched Telephone Network (PSTN). This is the historically common analog telephone system. Currently, another type of telephone service is becoming common - Voice over Internet Protocol (VoIP). VoIP is frequently referred to as a Digital or Internet Phone.
The main difference between the two is that a PSTN connection is a direct, dedicated link between the two calling stations while VoIP divides the call up into data "packets" and transmits them over the Internet. For consistent, reliable service Brother recommends the use of a PSTN line. While Brother products are capable of functioning over a VoIP system, the unregulated nature of the Internet may cause situations that result in unsatisfactory performance.
Symptoms of common problems that are not normally related to faxing over VoIP:
No dial tone.
Fax machine will not answer.
For help with these problems, please go to our online
Support Center
, select your model and click "Go." On the Frequently Asked Questions tab, search for "No Dial Tone" or "Answer mode".
Symptoms of common problems that may be related to faxing over VoIP:
Fax call starts and receiving machine answers but will not connect.
Fax call is received and machine answers but will not connect.
Call (sending or receiving) connects and transmission starts but then disconnects.
Call (sending or receiving) connects and transmission starts but only 1 or 2 pages are sent before call disconnects.
Transmission Verification Report routinely shows "Poor Line Condition".
Faxes will not complete at certain times of day but work fine at other times.
Faxes will not complete to certain phone numbers but work fine with other numbers.
Please follow the steps below (Improving results) for these issues.
Improving Your Results with VoIP
There are several steps you can take that may improve your results when using a Brother fax-capable machine on a VoIP line. Please note Brother does not guarantee these steps will provide satisfactory performance.
-- Select your Model --
IntelliFax-1360
IntelliFax-1840C
IntelliFax-1860C
IntelliFax-1940CN
IntelliFax-1960C
IntelliFax-2440C
IntelliFax-2480C
IntelliFax-2580C
IntelliFax-2820
IntelliFax-2840
IntelliFax-2910
IntelliFax-2920
IntelliFAX-2940
MFC-210C
MFC-230C
MFC-240C
MFC-255CW
MFC-295CN
MFC-3240C
MFC-3340CN
MFC-3360C
MFC-420CN
MFC-440CN
MFC-465CN
MFC-490CW
MFC-495CW
MFC-5440CN
MFC-5460CN
MFC-5490CN
MFC-5840CN
MFC-5860CN
MFC-5890CN
MFC-620CN
MFC-640CW
MFC-6490CW
MFC-665CW
MFC-685CW
MFC-6890CDW
MFC-7220
MFC-7225N
MFC-7240
MFC-7340
MFC-7345N
MFC-7420
MFC-7440N
MFC-7820N
MFC-7840W
MFC-790CW
MFC-795CW
MFC-820CW
MFC-845CW
MFC-8460N
MFC-8660DN
MFC-8670DN
MFC-885CW
MFC-8860DN
MFC-8870DW
MFC-9420CN
MFC-9440CN
MFC-9450CDN
MFC-9840CDW
MFC-990CW
MFC-J220
MFC-J265w
MFC-J270w
MFC-J280W
MFC-J285DW
MFC-J410w
MFC-J415w
MFC-J425W
MFC-J430w
MFC-J4310DW
MFC-J435W
MFC-J4410DW
MFC-J4510DW
MFC-J4610DW
MFC-J470DW
MFC-J4710DW
MFC-J475DW
MFC-J5910DW
MFC-J615W
MFC-J625DW
MFC-J630W
MFC-J650DW
MFC-J6510DW
MFC-J6520DW
MFC-J6710DW
MFC-J6720DW
MFC-J6910dw
MFC-J6920DW
MFC-J825DW
MFC-J835DW
MFC-J870DW
MFC-J875DW
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Brother International Corporation