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Feature #1862

closed

IuCS: postpone signalling until after ciphering

Added by neels over 7 years ago. Updated 4 months ago.

Status:
Resolved
Priority:
Low
Assignee:
Category:
IuCS support
Target version:
-
Start date:
11/29/2016
Due date:
% Done:

0%

Resolution:
Spec Reference:
Tags:
3G

Description

Testing for #1816 brought my attention to this:
I suspect that libmsc would in some cases attempt to send signalling
messages to the UE without verifying/waiting for ciphering.

For example, the 'subscriber * ussd-notify' command merely checks whether a subscriber
has a conn available. For 3G, ciphering is required, so this should also reject
transmission when no ciphering has been established yet.

Make sure that in UTRAN no such actions are possible without ciphering established.

It probably makes sense to check this only after the new VLR is integrated (#1592).

Actions #1

Updated by neels over 7 years ago

  • Description updated (diff)
Actions #2

Updated by neels about 7 years ago

For incoming requests, this should be resolved "for free" with the current VLR development,
which adds a conn_fsm that only accepts requests in the ACCEPTED state.
This particular case where the VTY initiates transfer still needs to be checked.

Actions #3

Updated by laforge about 7 years ago

  • Project changed from 75 to OsmoMSC
Actions #4

Updated by laforge over 6 years ago

  • Category set to IuCS support
Actions #5

Updated by laforge almost 6 years ago

  • Tags set to 3G
Actions #6

Updated by neels 4 months ago

  • Status changed from New to Resolved
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