Patent ID: 8355181

Claim:
A method for processing Non-Standard Facilities frame data by T.38 gateways, the T.38 gateways comprising at least one transmitting gateway and at least one receiving gateway, the transmitting gateway connected with a transmitting facsimile machine, the receiving gateway connected with a receiving facsimile machine, wherein the method comprises: if the receiving gateway receives a Non-Standard Setup (NSS) frame data from the transmitting gateway, modifying, by the receiving gateway, randomly a frame check sequence of the NSS frame data, and modulating, by the receiving gateway, the modified NSS frame data and transmitting the modulated modified NSS frame data to the receiving facsimile machine; or if the transmitting gateway receives a Non-Standard Setup (NSS) frame data from the transmitting facsimile machine, modifying, by the transmitting gateway, a check result of the NSS frame data as BAD, and encapsulating, by the transmitting gateway, the modified NSS and sending the encapsulated modified NSS to the receiving gateway; and the method further comprises: in response to the receiving facsimile machine receiving the modified NSS, receiving a non-standard frame (NSF) generated by the receiving facsimile machine, modifying a country code of the NSF such that a Non-Standard Setup (NSS) frame signal will not be returned from the transmitting facsimile machine, and transmitting the modified NSF to the transmitting facsimile machine.