The latest release of osmo-sip-connector (1.5.0, 23 Feb 2021) does
support MNCCv7, so there is no need to maintain MNCCv6 support.
Change-Id: Ie45158e805a62e86b9496b46f323b83a74630460
Related: I5448ff931ec33f24f4837a51376f1703fe97683b
Related: OS#5282
SDP is added to the MNCC protocol in osmo-msc
Ie16f0804c4d99760cd4a0c544d0889b6313eebb7.
This patch adds SDP to the ttcn3 MNCC messaging.
These changes still work with current osmo-msc master that doesn't send SDP /
ignores received SDP in MNCC.
Change-Id: Ic9568c8927507e161aadfad1a4d20aa896d8ae30