Question about Samsung SCX 4521F All-In-One Laser Printer

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Any way to manually LOWER the Fax Connection Baud Rate?

I am having troubles sending a fax to a certain # .. when it connects to the external fax it attempts to send Page 1 but then hangs up....I am figuring i need to lower the attempted fax baud rate from its possible 14.4Kbps to something like 9600 baud....this will likely solve my problem...

Does anyone know how to do this manualyl for this printer?

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Re: Any way to manually LOWER the Fax Connection Baud...

Newer fax technology adjusts transmission speed automatcally, so no adjustment is necesary. therefore, there is no menu option to change it. Your problem resides either on your phone line or the one you are trying to connect to. Call the other people and ask them if thei are receiving without problem. If you are able to transmit elsewhere and the other party is receiving from everywhere, try turning off the ECM option on your unit.

Posted on Nov 01, 2007

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How do I change baud rate on Lexmark X5650 in

Just to set your expectation, MagicJack phone service may work but Lexmark does not recommend the printer to be connected to a digital phone signal (e.g. MagicJack, Vonage, etc.) since there are lots of jitter and packet loss in the transmission signal resulting to fax failures. The Lexmark fax machine will have its optimum performance when connected to an analog signal(regular telephone line). But here's how to configure the printer's baud rate. From the Control Panel, press Settings(wrench icon)> Fax Setup, hit Ok > Dialing and Sending, hit Ok > Max Send Speed, hit Ok > set down the speed to 9600 bps. Hope this helps. If you need more assistance, leave a comment and I'll get back to it. Thanks.

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Need to know what bod rate is on my fax

older fax machines used a 9600bps baud rate, meaning a transfer rate of 9600 bits per second. a Bit being an 7th/8th of a byte. The newer machines can transfer at 14400bps, which older machines can not read, as its too fast. thats why they asking the BAUD rate.

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Fax issue with HP Laserjet 3055

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Connot send fax

hi there!

thanks for using!

I suggest you try to call first the receiver and ask, perhaps they are having with their lines or fax machine. From your side, pls check with your Telephone provider for assistance.

In addition, pls check your cables, and connections.


Pls. don't forget to mark!

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Baud rate

# Lower the fax transmission speed to 14400 or even 9600 bps, as some older fax machines are not capable of receiving a fax at a high speed. To do so:

1. Press the Fax button, then press Options untill it gets to ADVANCED FAX.
2. Press Select.
3. Press Options untill it getsl MAX SEND SPEED appears on the LCD display.
4. Change it to 9600 BPS using the - (left arrow) button.
5. Press Select.

# Turn off ECM (Error Correction Mode) by pressing the following keys on the operator panel:

1. Press the Fax button, then press Option untill it gets to ADVANCED FAX.
2. Press Select.
3. Press Options until ERROR CORRECTION appears on the LCD display.
4. Change the setting from On to Off using the + (right arrow) button.
5. Press Select.
Note: Turning off this option makes it possible to receive a fax when the receiver fax machine does not support certain error correction modes.

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Change baud rate

Baud Rate is to lower the transmission speed of the fax, however these are the temp settings and once the power is off you have to reconfigure that. Follow the following steps :

From the front panel:
  1. Press and hold the * key for 3 to 5 seconds until the display screen reads Test -001+ .
  2. Enter in 620 on the key board, and press the Check Mark and the screen will read Cfg param id:
    1. Enter the parameter ____ on the key board and press the Check Mark.
    1. 159 - Receiving Fax baud rate
    • 153 - Transmitting Fax baud rate
    1. The screen will read Cfg param val: 26
    1. Enter in the value ____ and then press the Check Mark .
    1. 0 = V.17 14400
    • 2 = V.17 9600
    • 6 = V.29 9600
    • 10 = V.27 2400
    1. Screen will read Test -001+
    2. Press the Reset button until you get back to Ready

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