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Add a counter group for DLCX commands. The group contains counters for successful connection processing as well as various error conditions. This provides a quick overview of DLCX failures on each trunk throughout the lifetime of the osmo-mgw process. The counters are displayed by 'show mgcp stats' and 'show rate-counters' While here, rename MGCP_MDCX_FAIL_DEFERRED_BY_POLICY to MGCP_MDCX_DEFERRED_BY_POLICY; we have decided that deferred connections aren't failures, and this keeps names used by DLCX and MDCX in sync. Also remove some allocation failure checks with OSMO_ASSERT(); such checks aren't en vogue anymore. Change-Id: Ie0dde2faf02fd68a69f986973d39b1bea367039b Depends: I80d36181600901ae2e0f321dc02b5d54ddc94139I Related: OS#2660
About OsmoMGW ============= OsmoMGW originated from the OpenBSC project, which started as a minimalistic all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached maturity and diversity (including M3UA SIGTRAN and 3G support in the form of IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one approach to fully independent separate programs as in typical GSM networks. OsmoMGW was one of the parts split off from the old openbsc.git. It originated as a solution to merely navigate RTP streams through a NAT, but has since matured to a Media Gateway implementation that is capable of streaming RTP for 2G (AoIP) and 3G (IuCS) GSM networks as well as (still not implemented at time of writing) transcoding between TRAU, various RTP payloads and IuUP. The OsmoMGW program exposes an MGCP interface towards clients like OsmoMSC and OsmoBSC, and receives and sends RTP streams as configured via MGCP. The libosmo-mgcp-client library exposes utilities used by e.g. OsmoMSC (found in osmo-msc.git) to instruct OsmoMGW via its MGCP service. Find OsmoMGW issue tracker and wiki online at https://osmocom.org/projects/osmo-mgw https://osmocom.org/projects/osmo-mgw/wiki