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Bug #2994

OsmoBTS wrong PAGING TYPE 3 REST OCTETS

Added by laforge about 1 year ago. Updated about 1 year ago.

Status:
Resolved
Priority:
High
Assignee:
Category:
-
Target version:
-
Start date:
02/24/2018
Due date:
% Done:

100%

Spec Reference:

Description

When OsmoBTS builds RR PAGING TYPE 3 messages, it messes up generating the P3 rest octets IE, see the below decode:

GSM CCCH - Paging Request Type 3
    L2 Pseudo Length
    .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
    Message Type: Paging Request Type 3
    Page Mode
        .... 0000 = Page Mode: Normal paging (0)
    Channel Needed
        ..00 .... = Channel 1: Any channel (0)
        00.. .... = Channel 2: Any channel (0)
    TMSI/P-TMSI - Mobile Identity 1
        TMSI/P-TMSI
    TMSI/P-TMSI - Mobile Identity 2
        TMSI/P-TMSI
    TMSI/P-TMSI - Mobile Identity 3
        TMSI/P-TMSI
    TMSI/P-TMSI - Mobile Identity 4
        TMSI/P-TMSI
            TMSI/P-TMSI Value: 0x60cd1178
P3 Rest Octets
    L... .... = Channel Needed 3 & 4: Not Present
    .L.. .... = NLN(PCH): Not Present
    ..H. .... = Priority 1: Present
    ...0 00.. = Call priority: no priority applied (0) for Mobile Identity 1
    .... ..H. = Priority 2: Present
    .... ...0  00.. .... = Call priority: no priority applied (0) for Mobile Identity 2
    ..L. .... = Priority 3: Not Present
    ...L .... = Priority 4: Not Present
    Padding Bits: default padding


Related issues

Related to OsmoBTS - Bug #2993: OsmoBTS encoding of 2x IMSI into PAGING REQUEST 1 is brokenResolved2018-02-24

Related to OsmocomBB - Bug #2995: Wrong parsing of PAGING TYPE 3New2018-02-24

History

#1 Updated by laforge about 1 year ago

  • Description updated (diff)

#2 Updated by laforge about 1 year ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 80

#3 Updated by laforge about 1 year ago

  • Related to Bug #2993: OsmoBTS encoding of 2x IMSI into PAGING REQUEST 1 is broken added

#4 Updated by laforge about 1 year ago

  • Related to Bug #2995: Wrong parsing of PAGING TYPE 3 added

#5 Updated by laforge about 1 year ago

  • Status changed from In Progress to Resolved
  • % Done changed from 80 to 100

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