{"id":78708,"date":"2026-08-11T16:50:45","date_gmt":"2026-08-11T13:50:45","guid":{"rendered":"https:\/\/drivernew.com\/?p=78708"},"modified":"2026-08-11T16:50:45","modified_gmt":"2026-08-11T13:50:45","slug":"oki-mc342-mc362-and-mc562-fax-cannot-send-or-receive-line-busy-and-communication-error","status":"publish","type":"post","link":"https:\/\/drivernew.com\/?p=78708","title":{"rendered":"OKI MC342, MC362 and MC562: fax cannot send or receive \u2014 Line Busy and Communication Error"},"content":{"rendered":"

If an OKI MC342, MC362 or MC562 cannot send or receive faxes, reinstalling the printer driver usually does not help. A standard fax is transmitted over a telephone line, so first check the cable and the LINE connector, then the dialing method, PBX or VoIP settings and the reception mode on the MFP control panel.<\/p>\n

This guide will also help with Line Busy<\/strong>, No Answer<\/strong> and Communication Error<\/strong> messages, no dial tone, inability to dial an outside number and unstable transmission through a router’s telephone port.<\/p>\n

\n

Where to start<\/strong><\/p>\n

Connect the telephone line to the LINE<\/strong> connector, check for a dial tone on this line using a standard analog telephone and send a one-page fax from the MFP control panel to two different recipients. If there is no dial tone and the regular telephone does not work either, changing the fax settings is pointless \u2014 the problem must be found in the line, PBX, router or carrier service.<\/p>\n<\/div>\n

Which models this guide applies to<\/h2>\n

The standard fax function is available on the following models:<\/p>\n

    \n
  • OKI MC342dn and MC342dw;<\/li>\n
  • OKI MC362dn and MC362w;<\/li>\n
  • OKI MC562dn, MC562w and MC562dw;<\/li>\n
  • OKI ES5462 MFP and ES5462dw MFP;<\/li>\n
  • OKI MPS2731mc.<\/li>\n<\/ul>\n

    OKI MC332dn, MC352dn and ES3452 MFP look similar to the devices listed above, but they do not have the fax function discussed here. Do not look for LINE and TEL connectors on them and do not install a fax driver for another model.<\/p>\n

    The menu item names below are given in English. If another language is selected on the control panel, the menu locations remain the same, but the item names will be localized. An administrator password is required to access Admin Setup<\/strong>. The factory password for the listed models is aaaaaa<\/strong>, unless the device owner has changed it.<\/p>\n

    Before changing settings, determine the nature of the problem<\/h2>\n\n\n\n\n\n\n\n\n\n\n
    Symptom<\/th>\nMost likely cause<\/th>\n<\/tr>\n<\/thead>\n
    No dial tone, number cannot be dialed<\/td>\nThe cable is connected to TEL, the line is inactive, the wrong dialing method is selected or the MFP does not recognize the PBX dial tone<\/td>\n<\/tr>\n
    Line Busy<\/strong><\/td>\nThe recipient’s line is busy, the number or prefix was entered incorrectly, the PBX did not provide an outside line or a PBX signal was incorrectly detected as busy<\/td>\n<\/tr>\n
    No Answer<\/strong><\/td>\nThe remote fax is turned off, does not answer automatically, the number is incorrect or the call does not pass through the PBX<\/td>\n<\/tr>\n
    Communication Error<\/strong><\/td>\nInterference, a dropped connection, incompatibility with the remote device, modem speed that is too high or fax signal distortion over VoIP<\/td>\n<\/tr>\n
    Sending works, receiving does not<\/td>\nTel Ready Mode is selected, call answering is configured incorrectly, an answering machine interferes or a received fax remains in memory<\/td>\n<\/tr>\n
    The error occurs only with one recipient<\/td>\nA problem with the remote fax, a specific communication route or modem speed compatibility<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Step 1. Check the LINE and TEL connectors<\/h2>\n

    There are two similar telephone connectors on the back of the MFP, but they serve different purposes:<\/p>\n

      \n
    • LINE<\/strong> \u2014 telephone line input to the MFP;<\/li>\n
    • TEL<\/strong> \u2014 output for an additional analog telephone or answering machine.<\/li>\n<\/ul>\n
        \n
      1. You do not need to turn off the MFP for a normal cable check, but do not touch damaged wires or connectors.<\/li>\n
      2. Locate the cable coming from the telephone wall socket, analog PBX port, router or ATA gateway.<\/li>\n
      3. Make sure it is inserted into the LINE<\/strong> connector until it locks in place.<\/li>\n
      4. If an external telephone or answering machine is used, connect it to TEL<\/strong>.<\/li>\n
      5. Inspect the cable. Replace it if the plug is broken, the locking tab does not hold the connection or the cable has kinks or damage.<\/li>\n<\/ol>\n
        \n

        Do not connect the carrier line to TEL.<\/strong> In this case, the external telephone may behave unpredictably and the MFP’s fax modem will not receive the line. Also do not connect a telephone in parallel to the same line using a splitter: lifting the handset during transmission may cause image distortion or a Communication Error.<\/p>\n<\/div>\n

        If the MFP is connected to an office telephone system<\/h3>\n

        The LINE connector may only be connected to a compatible analog line or analog extension port of the PBX. A port intended for a proprietary digital system telephone may be electrically and protocol-incompatible with fax. If you do not know which type of port is being used, check with the specialist who maintains the PBX.<\/p>\n

        Step 2. Check the dial tone without the MFP<\/h2>\n

        This test immediately distinguishes an MFP problem from a telephone line problem.<\/p>\n

          \n
        1. Disconnect the cable going to the MFP from LINE.<\/li>\n
        2. Connect this cable to a standard analog telephone.<\/li>\n
        3. Lift the handset and check for a dial tone.<\/li>\n
        4. Use the telephone to call a regular number.<\/li>\n
        5. Call this line from another telephone and make sure incoming calls work.<\/li>\n
        6. Reconnect the tested cable to LINE.<\/li>\n<\/ol>\n

          If there is no dial tone or outgoing or incoming calls do not work, contact the carrier, PBX administrator or check the router’s telephone port settings. OKI settings cannot restore an inactive line.<\/p>\n

          If a regular telephone works but the MFP does not dial, proceed to the dialing method and dial tone detection settings.<\/p>\n

          Step 3. Check tone or pulse dialing<\/h2>\n

          Tone dialing is used by default. For most modern lines, PBXs and router telephone outputs, leave Tone<\/strong> selected. Pulse<\/strong> is required only for old lines that use pulse dialing.<\/p>\n

            \n
          1. Press the SETTING<\/strong> button on the MFP control panel.<\/li>\n
          2. Select Admin Setup<\/strong> and press OK<\/strong>.<\/li>\n
          3. Enter the administrator password, select Enter<\/strong> and press OK<\/strong>.<\/li>\n
          4. Open User Install<\/strong>.<\/li>\n
          5. Select MF(Tone)\/DP(Pulse)<\/strong>.<\/li>\n
          6. For a modern line, select Tone<\/strong>.<\/li>\n
          7. Select Pulse<\/strong> only if the carrier or PBX administrator has confirmed that pulse dialing is required.<\/li>\n
          8. Press OK<\/strong> and return to the main screen.<\/li>\n<\/ol>\n

            After changing the setting, send a test fax. Do not switch to Pulse simply because the first transmission failed: an incorrect dialing method completely prevents dialing.<\/p>\n

            Step 4. Send a simple test fax from the control panel<\/h2>\n

            For the first test, do not use the phone book, group dialing, delayed transmission or the computer fax driver.<\/p>\n

              \n
            1. Place a one-page document face up in the ADF. If using the scanner glass, place the document face down.<\/li>\n
            2. Press the FAX<\/strong> button.<\/li>\n
            3. Select standard fax, not Internet Fax.<\/li>\n
            4. Open Direct Input<\/strong>.<\/li>\n
            5. Enter the recipient’s full number manually.<\/li>\n
            6. Check every digit.<\/li>\n
            7. Press START<\/strong>.<\/li>\n
            8. Wait for the attempt to finish and write down the message shown on the display.<\/li>\n<\/ol>\n

              Repeat the test with another known working fax. If transmission to one recipient succeeds but always fails with another, the local line and OKI modem are most likely working correctly.<\/p>\n

              How to distinguish a fax problem from a computer fax driver problem<\/h3>\n

              If the document is sent successfully from the control panel but not from Windows, do not change the MFP telephone settings. The line has already been verified. In this case, separately check the installed fax driver, the selected queue and the connection between the computer and the MFP.<\/p>\n

              If Line Busy or No Answer appears<\/h2>\n

              Line Busy<\/strong> does not always mean a physical fault. The MFP may have dialed an incorrect number, remained on the PBX internal line or incorrectly interpreted a service signal as busy.<\/p>\n

                \n
              1. Call the recipient’s number using a regular telephone.<\/li>\n
              2. If the number is actually busy, wait until the line is free. The MFP may perform an automatic redial.<\/li>\n
              3. If the call succeeds from the telephone, manually compare the number with the number entered on the MFP.<\/li>\n
              4. If the OKI phone book is used, repeat the test using Direct Input<\/strong>. This can reveal an error in the saved entry.<\/li>\n
              5. When connected through a PBX, check the outside-line prefix and the pause after it.<\/li>\n
              6. If the message appears immediately after dialing begins, check PBX Line<\/strong> and Dial Tone Detection<\/strong>.<\/li>\n<\/ol>\n

                No Answer<\/strong> means that the connection did not proceed to fax communication. Ask the recipient to check whether their fax machine is turned on, whether the correct reception mode is selected and whether paper is available. If a person answers by voice, ask them to start fax reception manually.<\/p>\n

                Configure automatic redialing<\/h3>\n

                Automatic redialing is useful for a genuine busy signal, no answer and a temporary communication error.<\/p>\n

                  \n
                1. Press SETTING<\/strong>.<\/li>\n
                2. Open Admin Setup \u2192 Fax Setup \u2192 Other Settings<\/strong>.<\/li>\n
                3. Select Redial Tries<\/strong>.<\/li>\n
                4. Set the number of retry attempts from 0 to 9.<\/li>\n
                5. Open Redial Interval<\/strong>.<\/li>\n
                6. Set the interval from 1 to 5 minutes.<\/li>\n
                7. Save the changes.<\/li>\n<\/ol>\n

                  Redialing does not fix an incorrect number, a missing PBX prefix or an inactive line. Correct the underlying cause first.<\/p>\n

                  If the fax is connected through an office PBX<\/h2>\n

                  When connected to an analog PBX extension, a digit is usually required to access an outside line, for example 0 or 9. After this digit, the MFP must wait until the PBX provides an outside line.<\/p>\n

                  Enable PBX Line<\/h3>\n
                    \n
                  1. Press SETTING<\/strong>.<\/li>\n
                  2. Open Admin Setup<\/strong> and enter the password.<\/li>\n
                  3. Select Fax Setup \u2192 Fax Setting<\/strong>.<\/li>\n
                  4. Open PBX Line<\/strong>.<\/li>\n
                  5. Select ON<\/strong>.<\/li>\n
                  6. Press OK<\/strong>.<\/li>\n<\/ol>\n

                    Save the outside-line prefix<\/h3>\n
                      \n
                    1. Open SETTING \u2192 Admin Setup \u2192 Fax Setup \u2192 Other Settings<\/strong>.<\/li>\n
                    2. Select Prefix<\/strong>.<\/li>\n
                    3. Enter the digit or sequence used to access an outside line.<\/li>\n
                    4. Save the value by pressing OK<\/strong>.<\/li>\n
                    5. When entering the recipient’s number, use the PreFix<\/strong> command if it is displayed on the direct input screen.<\/li>\n<\/ol>\n

                      Add a pause after the prefix<\/h3>\n

                      If the PBX does not provide a line immediately, enter the prefix, then press Pause<\/strong> and only then enter the number. One pause lasts approximately two seconds; if necessary, you can add several pauses.<\/p>\n

                      For example, if 9 is used to access an outside line, the dialing sequence should look like this:<\/p>\n

                      9 \u2192 Pause \u2192 recipient number<\/pre>\n
                      If the pause is too short, the first digits of the number are sent before the outside line becomes available. If it is too long, it usually only delays the call.<\/p>\n
                      If the MFP does not recognize the PBX dial tone<\/h3>\n
                        \n
                      1. Make sure a regular telephone connected through the same PBX port can make outside calls.<\/li>\n
                      2. Check that PBX Line<\/strong> is enabled and the prefix is set correctly.<\/li>\n
                      3. Open SETTING \u2192 Admin Setup \u2192 User Install \u2192 Dial Tone Detection<\/strong>.<\/li>\n
                      4. If dialing does not begin because of a non-standard PBX dial tone, set it to OFF<\/strong>.<\/li>\n
                      5. Send a test fax.<\/li>\n<\/ol>\n
                        Disabling dial tone detection does not create a telephone line. The MFP simply starts dialing without waiting for a recognizable signal. Do not disable this check if the reason for the missing dial tone has not yet been identified.<\/p>\n
                        If Communication Error appears<\/h2>\n
                        Communication Error<\/strong> means that fax communication started or was requested but did not complete. The cause may be the local line, remote device, interference or audio conversion in an IP network.<\/p>\n
                          \n
                        1. Retry the transmission once. A temporary disturbance may not occur again.<\/li>\n
                        2. Check the number and call the recipient by voice.<\/li>\n
                        3. Send the same page to another recipient.<\/li>\n
                        4. If the second recipient receives the document, ask the first recipient to check their fax and line.<\/li>\n
                        5. If the error occurs with all recipients, check the connection cable and eliminate any telephones connected in parallel.<\/li>\n
                        6. If the line passes through a router, ATA or VoIP, disable Super G3 and reduce the modem speed using the instructions below.<\/li>\n
                        7. Check the transmission report instead of judging the result only by the brief message on the display.<\/li>\n<\/ol>\n
                          If the error occurs only at a certain time, check the line quality at another time of day. Packet loss and VoIP connection congestion can affect fax communication even when voice calls remain acceptable.<\/p>\n
                          Configure fax for VoIP, IP telephony and a router telephone port<\/h2>\n
                          A standard fax cannot be transmitted through the MFP’s Ethernet network connector. The telephone cable must run from an analog PHONE<\/strong>, TEL<\/strong> or FXS<\/strong> port on the router or ATA gateway to the LINE<\/strong> connector on the OKI.<\/p>\n
                            \n
                          1. Check that the router port is activated by the carrier and that a regular telephone connected to it can make and receive calls.<\/li>\n
                          2. Do not connect the OKI to a LAN network connector instead of the telephone line.<\/li>\n
                          3. Ask the carrier whether fax and the T.38 protocol are supported.<\/li>\n
                          4. If the carrier allows the voice codec to be selected, fax usually requires the uncompressed G.711 codec. The specific setting must be confirmed by the carrier.<\/li>\n
                          5. Disable functions that alter the line’s audio signal if the carrier provides such settings: silence suppression, some bandwidth-saving modes and voice optimization.<\/li>\n
                          6. After checking the connection, change OKI settings one at a time.<\/li>\n<\/ol>\n
                            \n
                            Fax over VoIP is not guaranteed simply because a dial tone is present.<\/strong> Voice may sound normal, but small delays, packet loss or audio compression can disrupt fax communication. Therefore, first check the carrier’s service and then reduce the fax speed.<\/p>\n<\/div>\n
                            Disable Super G3<\/h3>\n
                              \n
                            1. Press SETTING<\/strong>.<\/li>\n
                            2. Open Admin Setup \u2192 User Install<\/strong>.<\/li>\n
                            3. Select Super G3<\/strong>.<\/li>\n
                            4. Set it to OFF<\/strong>. The MFP will use standard G3 mode.<\/li>\n
                            5. Save the setting and retry transmission.<\/li>\n<\/ol>\n
                              Reduce the modem speed<\/h3>\n
                              The factory setting of 33.6 Kbps provides fast transmission but places higher demands on the line. For IP telephony, test 14.4 Kbps, and if errors continue, 9.6 Kbps.<\/p>\n
                                \n
                              1. Press SETTING<\/strong>.<\/li>\n
                              2. Open Admin Setup \u2192 Fax Setup \u2192 Fax Setting<\/strong>.<\/li>\n
                              3. Select H\/Modem Rate (For Tx)<\/strong>.<\/li>\n
                              4. Set 14.4 Kbps<\/strong>.<\/li>\n
                              5. Select H\/Modem Rate (For Rx)<\/strong>.<\/li>\n
                              6. Also set 14.4 Kbps<\/strong>.<\/li>\n
                              7. Test sending and receiving.<\/li>\n
                              8. If Communication Error remains, set both transmission and reception to 9.6 Kbps<\/strong> and repeat the test.<\/li>\n<\/ol>\n
                                Change the transmission and reception speeds together if problems occur in both directions. If only sending does not work, you can first reduce only For Tx<\/strong>; if only receiving does not work, reduce For Rx<\/strong>.<\/p>\n
                                Do not disable ECM unless necessary<\/h3>\n
                                ECM Mode<\/strong> detects and corrects errors caused by noise on the telephone line. Under normal conditions and for most problems, it should remain enabled.<\/p>\n
                                A brief test with ECM OFF is appropriate only as a final diagnostic measure if the VoIP carrier cannot provide compatible transmission and errors remain after disabling Super G3 and reducing the speed. With ECM disabled, the document may be received with missing data or distortion.<\/p>\n
                                  \n
                                1. Open SETTING \u2192 Admin Setup \u2192 Fax Setup \u2192 Other Settings<\/strong>.<\/li>\n
                                2. Select ECM Mode<\/strong>.<\/li>\n
                                3. For normal operation, use ON<\/strong>.<\/li>\n
                                4. If performing a diagnostic test, temporarily select OFF<\/strong>, send one page and evaluate the result.<\/li>\n
                                5. If there is no improvement, restore ON<\/strong>.<\/li>\n<\/ol>\n
                                  If the OKI sends but does not receive faxes<\/h2>\n
                                  Successful transmission confirms that the line is connected to LINE and the MFP can dial numbers. In this case, first check the reception mode.<\/p>\n
                                  Select the appropriate Reception Mode<\/h3>\n
                                    \n
                                  1. Press SETTING<\/strong>.<\/li>\n
                                  2. Open Admin Setup<\/strong> and enter the password.<\/li>\n
                                  3. Select User Install \u2192 Reception Mode<\/strong>.<\/li>\n
                                  4. Select a mode from the table below.<\/li>\n
                                  5. Press OK<\/strong> and return to the main screen.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n\n\n
                                    Mode<\/th>\nWhen to use it<\/th>\nHow the fax is received<\/th>\n<\/tr>\n<\/thead>\n
                                    Fax Ready Mode<\/strong><\/td>\nThe line is used primarily for fax<\/td>\nAutomatically; this is the factory mode<\/td>\n<\/tr>\n
                                    Tel\/Fax Ready Mode<\/strong><\/td>\nOne line is used for fax and an external telephone<\/td>\nThe MFP detects the call type; a telephone connected to TEL is required for voice calls<\/td>\n<\/tr>\n
                                    Ans\/Fax Ready Mode<\/strong><\/td>\nA telephone with an answering machine is connected to TEL<\/td>\nThe answering machine handles voice calls and the MFP detects the fax signal<\/td>\n<\/tr>\n
                                    Tel Ready Mode<\/strong><\/td>\nThe line is used more often for voice calls<\/td>\nNot automatically: lift the handset and press START to receive the fax<\/td>\n<\/tr>\n
                                    DRD<\/strong><\/td>\nThe carrier provides a distinctive ring service<\/td>\nThe MFP answers only the stored ring pattern<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                                    If faxes must be received without user intervention, do not select Tel Ready Mode<\/strong>. For a dedicated fax line, select Fax Ready Mode<\/strong>.<\/p>\n
                                    Configure the ring response time<\/h3>\n
                                    If the response time is too short, there is not enough time to answer the external telephone. If it is too long, the sending fax may stop waiting.<\/p>\n
                                      \n
                                    1. Open SETTING \u2192 Admin Setup \u2192 Fax Setup \u2192 Other Settings<\/strong>.<\/li>\n
                                    2. Select Ring Response<\/strong>.<\/li>\n
                                    3. Set an appropriate number of rings or waiting time.<\/li>\n
                                    4. If caller ID is used on the line and the fax does not answer, test 10 seconds<\/strong>, 15 seconds<\/strong> or 20 seconds<\/strong>.<\/li>\n
                                    5. Call the line and check the MFP’s behavior.<\/li>\n<\/ol>\n
                                      If an answering machine is used<\/h3>\n
                                        \n
                                      1. Connect the answering machine or telephone with an answering machine only to TEL<\/strong>.<\/li>\n
                                      2. Select Ans\/Fax Ready Mode<\/strong>.<\/li>\n
                                      3. Keep the greeting short and avoid long pauses.<\/li>\n
                                      4. Configure the answering machine to answer before the call is disconnected by the carrier or sending fax.<\/li>\n
                                      5. Test a voice call and an incoming fax separately.<\/li>\n<\/ol>\n
                                        Some answering machines and sending fax machines may not detect each other reliably. If reception does not start, temporarily disconnect the answering machine, select Fax Ready Mode and repeat the test. Successful reception confirms that the problem is related to interaction between the devices rather than the OKI modem.<\/p>\n
                                        If the fax is received but does not print<\/h2>\n
                                        An illuminated DATA IN MEMORY<\/strong> indicator means that data is stored in memory. A received fax may not print because suitable paper is unavailable, there is a paper jam, a cover is open, there is a consumables error or another condition is preventing printing.<\/p>\n
                                          \n
                                        1. Read the message on the display and correct the indicated error.<\/li>\n
                                        2. Load a supported paper size into the configured tray.<\/li>\n
                                        3. Check that the paper size and type are registered correctly in SETTING \u2192 Paper Setup<\/strong>.<\/li>\n
                                        4. Remove jammed paper if a jam code is displayed.<\/li>\n
                                        5. Close all covers and trays.<\/li>\n
                                        6. Check toner and image drum messages.<\/li>\n
                                        7. Wait for the stored fax to print automatically after the MFP returns to the ready state.<\/li>\n<\/ol>\n
                                          If the memory is full, new incoming faxes may be rejected. Finish printing stored documents, cancel unnecessary delayed jobs and ask the sender to retransmit the fax.<\/p>\n
                                          How to obtain detailed error information<\/h2>\n
                                          The brief Communication Error message does not indicate at which stage the transmission was interrupted. Use the confirmation report and fax log for troubleshooting.<\/p>\n
                                          Enable a report for the next transmission<\/h3>\n
                                            \n
                                          1. Press FAX<\/strong> and open the standard fax screen.<\/li>\n
                                          2. Select Fax Functions<\/strong>.<\/li>\n
                                          3. Open Transmit Confirmation Report<\/strong>.<\/li>\n
                                          4. Select ON<\/strong>.<\/li>\n
                                          5. Send the test document.<\/li>\n
                                          6. Keep the printed report.<\/li>\n<\/ol>\n
                                            Print the transmission and reception log<\/h3>\n
                                              \n
                                            1. Press SETTING<\/strong>.<\/li>\n
                                            2. Select Reports \u2192 Fax<\/strong>.<\/li>\n
                                            3. Open Fax Tx\/Rx Log<\/strong>.<\/li>\n
                                            4. Enter the administrator password if requested.<\/li>\n
                                            5. Select Yes<\/strong> to print.<\/li>\n<\/ol>\n
                                              The log contains the results of the most recent sent and received jobs. Compare the time, recipient number and result of several attempts. A persistent error with only one number points to the remote side or a specific communication route; errors with all numbers point to the local line or settings.<\/p>\n
                                              If faxes work only intermittently<\/h2>\n
                                                \n
                                              1. Eliminate telephone splitters, extension cables and damaged cables.<\/li>\n
                                              2. Make sure no one lifts a parallel telephone handset during transmission.<\/li>\n
                                              3. Test operation with two different recipients.<\/li>\n
                                              4. For VoIP, disable Super G3 and set the speed to 14.4 Kbps.<\/li>\n
                                              5. If errors continue, test 9.6 Kbps.<\/li>\n
                                              6. Leave ECM enabled if testing with it disabled did not produce a clear improvement.<\/li>\n
                                              7. Provide the carrier with the time of the error and the log result so they can check the telephone route.<\/li>\n<\/ol>\n
                                                Do not randomly change Service Bit<\/strong>, Attenuator<\/strong>, pulse dialing coefficients or the country code. These values are related to regional and service line parameters. Incorrect settings can introduce additional errors and make troubleshooting more difficult.<\/p>\n
                                                When the problem is outside the MFP<\/h2>\n
                                                Contact the carrier or PBX administrator if a regular telephone does not receive a dial tone, calls are interrupted, the VoIP port does not support fax, a digital system telephone port is being used or communication loss occurs at the same time on different devices.<\/p>\n
                                                The MFP itself may require service if a tested analog line works with another fax machine, but the OKI does not detect it, does not respond to incoming calls in any mode and cannot send documents to several recipients after Tone, PBX Line, Super G3 and modem speed have been checked. Before requesting service, save the Fax Tx\/Rx Log, the exact message text, information about the line type and the results of tests with two numbers.<\/p>\n","protected":false},"excerpt":{"rendered":"
                                                If an OKI MC342, MC362 or MC562 cannot send or receive faxes, reinstalling the printer driver usually does not help. A standard fax is transmitted over a telephone line, so first check the cable and the LINE connector, then the…<\/p>\n
                                                Read more →<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[36],"tags":[],"class_list":["post-78708","post","type-post","status-publish","format-standard","hentry","category-oki-printer"],"modified_by":"DriverNew","_links":{"self":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=78708"}],"version-history":[{"count":1,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78708\/revisions"}],"predecessor-version":[{"id":78709,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78708\/revisions\/78709"}],"wp:attachment":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=78708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=78708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}