HP 4215xi, 4215v, 4255 manual Use error correction mode, Set the fax speed, Fax speed setting

use the fax features

use error correction mode

Error Correction Mode (ECM) eliminates data lost due to poor phone lines by detecting errors that occur during transmission and automatically requesting retransmission of the erroneous portion. Phone charges are unaffected, or might even be reduced, on good phone lines. On poor phone lines, ECM increases sending time and phone charges, but sends the data much more reliably. Turn ECM off (the default setting is on) only if it increases phone charges substantially, and you can accept poorer quality in exchange for reduced charges.

Note: If your Fax Speed setting is set to Fast or you are sending a color fax, then ECM is always On.

1Press Setup.

2Press 4, then press 5.

This selects Advanced Fax Setup and then selects Error Correction Mode.

3Press ! to select On or Off.

4 Press OK.

set the fax speed

You can set the fax speed used to communicate between your HP Officejet and other fax machines when sending and receiving faxes. The default fax speed is Fast.

In certain environments, setting the fax speed to a slower speed might be required. For example, if you use one of the following:

•an Internet phone service

•a PBX system

•Fax over Internet Protocol (FoIP)

•an integrated services digital network (ISDN) service

Also, if you experience problems sending and receiving faxes, you might want to try setting the Fax Speed to Medium or Slow. If you want to send with ECM turned off, you must use Medium or Slow. The following fax speeds are available.

fax speed setting	fax speed
Fast	v.34 or 33600 bps
Medium	v.17 or 14400 bps
Slow	v.29 or 9600 bps

1Press Setup.

2Press 4, then press 6.

This selects Advanced Fax Setup and then Fax Speed.

3Press ! to select an option, and then press OK.

fax

user guide 65