Search results
Results from the WOW.Com Content Network
Presence of User Data Header is indicated by the TP-UDHI (Transfer Layer Protocol User Data Header Indicator) bit - 6th bit of the first octet of the GSM 03.40 or 3GPP 23.040 message. If UDH is present, it is at the beginning of the TP-UD (TP-User Data) field and it always starts with an UDHL (UDH Length) octet.
When TP-UDHI is 1, the TP-UD starts with User Data Header (UDH); in this case the first octet of the TP-UD is User Data Header Length (UDHL) octet, containing the length of the UDH in octets without UDHL itself. UDH eats room from the TP-UD field.
User Data Header, a binary structure at the start of some short messages in cell phones Universal derailleur hanger , a standard for attaching rear derailleurs on bicycles Medicine and biology
The length field is set to zero if the length of the UDP header plus UDP data is greater than 65,535. [9] Checksum: 16 bits The checksum field may be used for error-checking of the header and data. This field is optional in IPv4, and mandatory in most cases in IPv6. [10] Data: Variable The payload of the UDP packet.
Data Coding Scheme is a one-octet field in Short Messages (SM) and Cell Broadcast Messages (CB) which carries a basic information how the recipient handset should process the received message. The information includes:
The user data transported can be packets in any of IPv4, IPv6, or PPP formats. GTP' ( GTP prime ) uses the same message structure as GTP-C and GTP-U, but has an independent function. It can be used for carrying charging data from the charging data function (CDF) of the GSM or UMTS network to the charging gateway function (CGF).
This instructs the user agent that the content is stale and should be validated before use. The header field Cache-Control: no-store is intended to instruct a browser application to make a best effort not to write it to disk (i.e not to cache it). The request that a resource should not be cached is no guarantee that it will not be written to disk.
The header contains all the information sufficient for routing from the originating equipment to the destination without relying on prior exchanges between the equipment and the network. Headers may include source and destination addresses as well as type and length fields. The payload is the data to be transported. This process of nesting data ...