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gsup: Document passing MSISDN as part of the response 

When asking the GGSN to create/open a PDP context one needs
to send a MSISDN. The MSISDN can only be provided through the
GSUP interface.
This commit is contained in:
Holger Hans Peter Freyther 2015-04-22 22:10:44 -04:00
parent 337343d159
commit e448554568
1 changed files with 23 additions and 0 deletions
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23
openbsc/doc/sgsn-remote-protocol.txt
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@ -119,6 +119,7 @@ Network peer -> SGSN
IEI Info Element Type Pres. Format Length
Message type 4.2.1 M V 1
01 IMSI 4.2.9 M TLV 2-10
08 MSISDN 4.2.10 O TLV 0-9
04 PDP info complete 4.2.8 O TLV 2
05 PDP info 4.2.3 1-10 TLV
@ -354,6 +355,7 @@ IEI that shall be used for the encoding.
| 0x05 PDP info 4.2.3 |
| 0x06 Cancel type 4.2.6 |
| 0x07 Freeze P-TMSI 4.2.8 |
| 0x08 MSISDN ISDN-AddressString/octet, 4.2.10 |
| 0x10 PDP context id big endian int |
| 0x11 PDP type 4.2.4 |
| 0x12 APN 04.08, 10.5.6.1 |
@ -397,3 +399,24 @@ The IMSI is encoded like in octet 4-N of the Called Party BCD Number defined in
Note 1) Either '1 1 1 1 | Number digit N' (N odd) or
'Number digit N | Number digit N-1' (N even),
where N is the number of digits.
4.2.10. ISDN-AddressString / MSISDN / Called Party BCD Number
The MSISDN is encoded as an ISDN-AddressString in GSM 09.02 and Called Party
BCD Number in GSM 04.08. It will be stored by the SGSN and then passed as is
to the GGSN during the activation of the primary PDP Context.
8 7 6 5 4 3 2 1
+-----------------------------------------------------+
| | IEI | octet 1
+-----------------------------------------------------+
| Length of IE contents | octet 2
+-----------------------------------------------------+
| ext | Type of num | Numbering plan | octet 2
+-----------------------------------------------------+
| Number digit 2 | Number digit 1 | octet 3
+-----------------------------------------------------+
| Number digit 4 | Number digit 3 | octet 4
+-----------------------------------------------------+
: : :
+-----------------------------------------------------+