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Harald Welte laforge at gnumonks.orgDear all, today I put together some message sequence charges on the different A interface configurations. This should serve to establish some kind of "common understanding" about what is different in terms of a) classic A interface (E1 on Abis and A) b) Old OsmoBSC with Abis/IP and SCCPlite+MGCP on A c) New OsmoBSC with Abis/IP and 3GPP AoIP d) New OsmoBSC with Abis/E1 and 3GPP AoIP (extended MGW) The document is in gerrit review, but you can also find a rendered version of the current draft at http://people.osmocom.org/laforge/tmp/aoip-mgw-options.pdf Please let me know if your understanding of the different protocol/options is different. I'll continue to work on the document and add some more textual explanation. Regards, Harald -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)