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Feature #2545

open

OsmoBSCNAT misses 3GPP AoIP

Added by laforge about 5 years ago. Updated about 2 months ago.

Status:
Stalled
Priority:
Low
Assignee:
Start date:
10/06/2017
Due date:
% Done:

40%

Spec Reference:

Description

osmo-bsc_nat in its current form was written strictly for SCCPlite / IPA multiplex.

It hence doesn't understand the 3GPP AoIP protocol variant, and doesn't use libosmo-sigtran for interfacing with either BSCs or MSCs

In order to be able to use it also with 3GPP AoIP, we will probably need to
  • make sure SCCPlite/IPA support in libosmo-sigtran is complete + validated
  • port osmo-bscnat over to use libosmo-sigtran as transport interface on both BSC and MSC facing interfaces
  • run an instance of osmo-mgw next to osmo-bsc_nat for handling RTP and OSMUX media streams to/from BSC and RTP to the (3rd party) MSC

Checklist

  • create specification here in the wiki
  • create ladder diagrams for handling of key prcedures
  • create TTCN3 test suite covering key procedures
  • rewrite osmo-bscnat using libosmo-sigtran (for AoIP support)
  • introduce osmo-mgw into the user plane, rewriting IP/PORT in AoIP related BSSMAP IEs

Related issues

Related to OsmoHNBGW - Feature #5152: support hnbgw co-located osmo-mgw for RTP proxyingResolveddaniel05/13/2021

Actions
Related to Cellular Network Infrastructure - Bug #5359: add osmo-bsc-nat.git to git.osmocom.orgResolvedlaforge12/16/2021

Actions
Related to OsmoBSCNAT - Bug #5574: OsmoBSCNAT testsuite running in jenkinsNewHoernchen06/01/2022

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