You may experience slow faxing speeds, which may become more evident when sending multiple pages at a time. This is because the 'V.34' communication setting is disabled by default. This may be particularly noticeable if you have previously owned an earlier fax-capable Epson product; this is because the 'V.34' mode was enabled by default on earlier models.
To solve the problem, navigate to the Fax Settings menu using the printer's control panel and enable the 'V.34' mode. For instructions on how to access the Fax Settings menu for your printer or for information on the 'V.34' mode, refer to the user's guide for your product which is available on the Epson support site.