Junk fax unlawful to send an individual an unsolicited sales and marketing fax without any prior consent of the customer. If the fax receiver is a company or corporate instances, fax communications are permitted unless the subscriber has previously notified the caller that such communications should not be sent on that line; or the subscriber’s line is listed in the register kept under regulation 25 of PECR. This register is maintained on behalf of OFCOM by the Direct Marketing Association and is branded as the Facsimile Preference Service (“FPS”). Unsolicited faxes are regulated by the Canadian Radio-television and Telecommunications Commission (CRTC) and
Fax transmitted. This is effective as most lines differ little from their predecessor. This is not continued to the end of the fax transmission, but only for a limited number of lines until the process is reset and a new 'first line' encoded with MH is produced. This limited number of lines is to prevent errors propagating throughout the whole fax, as the standard does not provide for error-correction. This is an optional facility, and some fax machines do not use MR in order to minimise the amount of computation required by the machine. The limited number of lines is two