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附带协议TS29060:
7.7.0 General
A GTP Signalling message may contain several information elements. The TLV (Type, Length, Value) or TV (Type,
Value) encoding format shall be used for the GTP information elements. The information elements shall be sorted, with
the Type fields in ascending order, in the signalling messages. The Length field contains the length of the information
element excluding the Type and Length field.
For all the length fields, bit 8 of the lowest numbered octet is the most significant bit and bit 1 of the highest numbered
octet is the least significant bit. Within information elements, certain fields may be described as spare. These bits shall be transmitted with the value
defined for them. To allow for future features, the receiver shall not evaluate these bits.
The most significant bit in the Type field is set to 0 when the TV format is used and set to 1 for the TLV format. |
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