Document user plane handling with BSC+MSC co-located OsmoMGW, Osmux, and outlook
I erased previous task #2909 by error. Recreating.
We need some kind of documentation on how the new, OsmoMGW-enabled user plane domain looks like. This includes the BSC-colocated OsmoMGW as well as the MSC-colocated OsmoMGW, as well as details on the use of MGCP between the respective call agents and MGW instances. Non-exhaustive list of topics to include: * message sequence charts * diagrams showing netwokr elemetns and control + user plane relationships * dynamic endpoint allocation * outlook on re-integrated support for E1 BTS * name MGCP/MGW related config parameters in BSC and MSC config * outlook on Osmux re-integration * interaction between MNCC signaling and user plane at MSC * outlook on IuUP This is not really a user manual of a given single network element, but a document that describes the relation between the respective elements. Individual sections/chapters could possibly be reused/included into the BSC/MGW/MSC user manuals, but let's have a look at this after having a draft of that document. Let's also make sure we use any existing bits and pieces from the osmo-mgw manuals (and the ladder diagrams I created there), as well as the wiki and possibly any not-yet-public ladder diagrams dexter might have created in recent months.
Documented the MGCP/OsmoMGW specific part in here:
- Add some shared section in OsmoBSC, OsmoMSC manuals (and maybe osmux reference manual too) to show with flow diagrams how calls work, with AoIP and with SCCPlite. Can use  as a source for the diagrams.
- Add BSC specific section explaining how to configure it with VTY and adding BSC related considerations
- Add MSC specific section explaining how to configure it with VTY and adding MSC related considerations
- % Done changed from 0 to 10
I started the Osmux "network-wide" documentation in here: