Connected a phone to SCX 4521f and want to change the amount of rings before going into automatic fax receiving mode

1. Connect the multi-function printer to a phone line. Most printers with fax capability have more than one phone jack, so make sure you are plugged into the right one.
   

2. Turn the printer on and access the start-up menu. Pick an answering mode based on your expected usage of the fax capabilities of your machine (see the next steps for more information about this).
   

3. Put the printer in manual mode if you expect little fax traffic. The manual mode usually requires you to pick up every call that comes to the machine. If you hear the signal for a fax, you push the start button and hang up.
   

4. Choose the automatic mode if you expect a lot of faxes or have a dedicated fax line. In automatic mode, the printer listens to incoming calls and determines whether they are faxes or voice calls. Voice calls get sent on to your phone, and faxes are picked up by the printer.
   

5. Select the number of rings you want your multi-function printer to give you before dropping a call. If you are using the manual mode you may want to go with four or more rings. Two rings should be sufficient in the automatic mode.
   

6. Load paper into the paper tray. Check on the paper level frequently if you receive a lot of faxes.
   

7. Set the desired print quality, and you are ready to receive faxes.
   

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Go to menu option and choose the option fax and set the parameter like auto receive or manual set the ring auto answer mode after certain ring. If it is in auto receiving mode it will receive the fax after the ring which you set. Make sure the phone wire which you insert in fax machine getting proper dial tone and getting out going calling facility.
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Firstly, you will need to get a 2nd ringtone from your phone provider. Most of them will provide a designated "fax ring" (not a new number) for little or no cost.

In DRPD mode, you can receive a call using the Distinctive Ring Pattern Detection (DRPD) feature. “Distinctive Ring” is a telephone company service which enables a user to use a single telephone line to answer several different services.

Using the Distinctive Ring Pattern Detection feature, your fax machine can “learn” the ring pattern you designate to be answered by the fax machine. Unless you change it, this ringing pattern will continue to be recognized and answered as a fax call, and all other ringing patterns will be forwarded to the
extension telephone or answering machine plugged into the EXT. jack. You can easily suspend or change Distinctive Ring
Pattern Detection at any time.

Before using the Distinctive Ring Pattern Detection option, Distinctive Ring service must be installed on your telephone line by the telephone company. To set up Distinctive Ring Pattern Detection, you will need access to another telephone or someone available to dial your fax number from outside (a cell phone will do!).

To set up the DRPD mode:

1 Press Menu until “Fax Setup” appears on the top line of the display.
2 Press the scroll button ( or ) until you see “Receive Mode” on the bottom line and press Enter.
3 Press the scroll button ( or ) until you see “DRPD Mode” on the bottom line and press Enter.
4 When “Set” displays on the bottom line, press Enter.
“Waiting Ring” appears on the display.
5 Call your fax number from another telephone. It is not necessary to place the call from a fax machine.
6 When your machine begins to ring, do not answer the call.
The machine requires several rings to learn the pattern.
When the machine completes learning, the LCD displays “End DRPD Setup”.
If the DRPD setup fails, “DRPD Ring Error” appears. Press Enter when “DRPD Mode” displays and retry from step 3.
7 To return to Standby mode, press Stop/Clear.
When the DRPD feature is set up, the DRPD option is available in the Receive Mode menu.

To receive faxes in the DRPD mode,
you need to set the menu to DRPD;

NOTES:
• DRPD must be set up again if you re-assign your fax number, or connect the machine to another telephone line.

• After DRPD has been set up, call your fax number again to verify that the machine answers with a fax tone. Then have
a call placed to a different number assigned to that same line to be sure the call is forwarded to the extension telephone or answering machine plugged into the EXT. jack.

• In Tel mode, you can receive a fax by picking up the handset of the extension phone and then pressing the remote receive code Alternatively, you can press On Hook
Dial (you can hear a fax tone from the remote machine) and then press Start on the control panel of your machine.
• In the Fax mode, the machine answers an
incoming call and immediately goes into fax
reception mode.
• In Ans/Fax mode, the answering machine answers an incoming call, and the caller can leave a message on the answering machine. If the fax machine senses a fax tone on the line, the call automatically switches to Fax mode.
• In DRPD mode, you can receive a call using the Distinctive Ring Pattern Detection (DRPD) feature. This option is available only when you set up the DRPD Mode.

The full user manual for your machine is located here

Hope that is of help to you :)

telkom connected line but when i connect the printer cables with the line so that i can fax, then it always tells me about delay fax and i must redail what is the promblem

As I understand it, this is as it should be. You have two different numbers sharing the same physical line and only one can be active at any one time, so if you are using the phone and someone tries to fax, the fax line will be engaged and similarly, if you are sending a fax and someone tries to ring on your phone line, it will be engaged.

I think you have to set after how many rings the SCX -4521F needs to receive the fax.

Try setting the receive mode to FAX/ANS. If you want the fax not to pickup before a phone call comes in, you should set the number of fax rings to a higher number, like "5" for instance. Set the answering machine rings less and the fax higher. The machine will usually record a message first and then detect a fax tone.

I had the same problem! You have to set your fax machine option to DRPD mode. Menu, to Fax setup, to DRPD mode, press ENTER, ENTER again, it should say waiting ring, you then have to call your fax line. Back to Fax Setup, Recieve Mode, press DRPD mode. This way your machine well distinguish a different ring for your fax.