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• File src/sgsn/gprs_ranap.c:

  • Patch Set #1, Line 332: /* Send CL RANAP message over SCCP: */

    Connectionless. […]

    Done

  • Patch Set #1, Line 679: if (ies->presenceMask & ERRORINDICATIONIES_RANAP_CN_DOMAININDICATOR_PRESENT) {

    According to specs the field is marked as "O" (optional), hence also why code from ASN1 files genera […]

    For reference:
    25.413 Release 17, Annex A 1.1:
    Rules for RANAP messages that shall contain the CN
    Domain Indicator IE

    Based on the principles described in TS 25.401 [3], the following rules can be deduced:
    1) The following RANAP messages initiating a connection oriented signalling connection shall contain the CN
    Domain Indicator IE: INITIAL UE MESSAGE message and RELOCATION REQUEST message.
    2) Any RANAP message belonging to class 1 procedures and which uses connectionless signalling shall contain the
    CN Domain Indicator IE.
    3) The following RANAP messages belonging to class 2 procedures and using connectionless signalling shall
    contain the CN Domain Indicator IE: PAGING message and ERROR INDICATION message, the OVERLOAD
    message in DL direction (see chapter 8.25.3.1) may contain the CN Domain Indicator IE.

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