Phương pháp nén: ï ¬ ELD identiï ¬ es phương pháp nén, đã được sử dụng để nén các đối tượng mở rộng, cùng với các thiết lập nén tùy chọn. Tại thời điểm viết bài, phương pháp nén / giải nén chỉ được hỗ trợ trong mở rộng EMS là dựa trên LZSS | 254 Mobile Messaging Technologies and Services Table Message envelope header parameters1 Parameter name Description To Cc Address of primary message recipient s . Address of secondary message recipient s . Carbon copy. Bcc Address of secondary message recipient s . Blind carbon copy. From Date Message-ID Address of message originator. Date and time when the message was sent. A unique identifier for the message. This helps correlating delivery and read reports with the original message. Subject X-Mms-Expiry Subject of the message. Validity period of the message. After this date MMSCs can discard the message if it has not yet been delivered to the recipient. X-Mms-Delivery-Time The message originator can specify an earliest delivery time for the message. X-Mms-Distribution-Indicator A value-added service provider may use this flag to indicate that the message cannot be redistributed freely. X-Mms-Reply-Charging Whether or not the message originator has requested reply charging. X-Mms-Reply-Charging-Deadline The reply must be sent before the specified deadline for the reply to be paid for by the message originator. X-Mms-Reply-Charging-Size The size of the message must be smaller than the specified size for the reply to be paid for by the message originator. X-Mms-Reply-Charging-ID X-Mms-Delivery-Report A unique identifier for the reply charging transaction. Whether or not the message originator requested a delivery report to be generated. X-Mms-Read-Reply Whether or not the message originator requested a read report to be generated. X-Mms-Message-Class The class of the message auto personal informational advertisement . X-Mms-Priority X-Mms-Sender-Visibility The priority of the message low medium or high . Whether or not the message originator requested his her address to be hidden from recipients. Content-type The content type of the message. A description of values that can be assigned to this parameter is provided below in this section. 1 For the sake of .
