Project

General

Profile

Bug #2750

OsmoBSC allows COMPLETE L3 INFO for SACCH

Added by laforge 7 months ago. Updated 5 months ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
A interface
Target version:
-
Start date:
12/13/2017
Due date:
% Done:

100%

Estimated time:
Spec Reference:

Description

When the MS establishes the signalling link, it must establish the DCCH with SAPI0, and only that establishment can be reported in COMPLETE L3 INFO to the MSC.

Any other Link (SACCH) or SAPI cannot be communicated to the MSC, as COMPLETE L3 INFO has no field for DLCI/SAPI, unlike DTAP.

See TC_rll_est_ind_inval_sacch in the TTCN-3 test suite.

sacch.pcapng sacch.pcapng 12 KB laforge, 12/13/2017 09:32 PM

Related issues

Related to OsmoBSC - Bug #2749: OsmoBSC allows COMPLETE LAYER3 on SAPI !=0Resolved2017-12-13

History

#1 Updated by laforge 7 months ago

  • Related to Bug #2749: OsmoBSC allows COMPLETE LAYER3 on SAPI !=0 added

#2 Updated by laforge 7 months ago

  • Assignee set to dexter

#3 Updated by dexter 5 months ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 40

When An establish indication is received the osmo-bsc now checks if SAPI=0 is already established. If not, the establish indication is ignored. See also patch in gerrit: https://gerrit.osmocom.org/#/c/6303/

The two testcaes

BSC_Tests.TC_rll_est_ind_inval_sapi1
BSC_Tests.TC_rll_est_ind_inval_sapi3

which failed before are now passing.

BSC_Tests.TC_rll_est_ind_inval_sacch

is still failing.

#4 Updated by dexter 5 months ago

Now the attempts to establish a SACCH on SAPI=0 are also dropped:

See patch: https://gerrit.osmocom.org/#/c/6306/

Now the following tests pass for me:

BSC_Tests.TC_rll_est_ind_inact_lchan # Pass
BSC_Tests.TC_rll_est_ind_inval_sapi1 # Pass
BSC_Tests.TC_rll_est_ind_inval_sapi3 # Pass
BSC_Tests.TC_rll_est_ind_inval_sacch # Pass

#5 Updated by dexter 5 months ago

  • % Done changed from 40 to 100

#6 Updated by dexter 5 months ago

  • Status changed from In Progress to Resolved

Also available in: Atom PDF

Add picture from clipboard (Maximum size: 48.8 MB)