437SEP 2004Ver. 1.2DP-1520P/1820P/1820E9.7. ITU T.37 and RFC23059.7.1. Mode of OperationThe Unit conforms to the ITU T.37 standards and RFC2305. This Internet store and forward facsimile usesapproved IETF protocols for posting, relaying and delivery of documents. It requires no changes to Internetstandards or to ITU Facsimile Recommendations.Store and forward facsimiles may operate in one of two modes.Communicating in the Simple Mode as defined below provides inter operability. All terminals conforming tothis recommendation and capable of reception must be able to receive in Simple Mode. It is recommendedthat terminals conforming to this recommendation and capable of transmitting should, as a minimum, becapable of transmitting in Simple Mode.Simple Mode supports the transfer of image data. Capability exchange and confirmation of receipt are notrequired for Simple Mode but may be provided using optional email functions outside the scope of thisrecommendation.9.7.2. Implementation Requirements for T.37 Simple Mode TableSenderReceiverRequiredSend data as a single MIME multi-page TIFF Profile S fileProvide notice in case of local transmission problemProvide a return address of an Internet email receiver which is MIMEcompliantStronglyRecommendedInclude Message-IDUse Base 64 encoding for image dataOptionalUse other TIFF Profiles if it has prior knowledge that such profiles aresupported by the receiverProvide notice on receipt of DSN or other notificationsRequiredBe MIME compliant except that it is not required to offer to placeMIME attachment in a file and may print a received file rather thandisplayBe capable of processing multiple MIME TIFF Profile S image fileswithin a single messageProvide notice in case of reception or processing problemsOptional Use other TIFF Profiles