8.94 Additional Protocol Configuration Options (APCO)
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
The Additional Protocol Configuration Options (APCO) information element is used to exchange additional protocol configuration options between the TWAN/ePDG and the PGW.
The Additional Protocol Configuration Options information element is specified in 3GPP TS 29.275 [26] and its GTPv2 coding is shown in figure 8.94-1.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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|
1 |
Type = 163 (decimal) |
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2 to 3 |
Length = n |
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|
4 |
Spare |
Instance |
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|
5 to m |
Additional Protocol Configuration Options (APCO) |
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|
(m+1) to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.94-1: Additional Protocol Configuration Options
Octets (5 to m) of the Additional Protocol Configuration Options IE are encoded as specified in 3GPP TS 29.275 [26].