A facsimile apparatus is connected to a telephone network and to an internet network. The facsimile apparatus is capable of receiving E-mail data via the internet network and transmitting facsimile data to a facsimile destination via the telephone network. A detector detects a password indicating an...http://www.google.com.hk/patents/US6781721?utm_source=gb-gplus-share專利 US6781721 - Communication apparatus with relay function and relay method
