Convert + Expand README file

README.md in-line with that of other osmocom CNI projects:
* markdown syntax
* link to manuals, issue tracker, gerrit contributions, etc.

Change-Id: I98e09e8900c359382e2a90b187f0c6f22a1cf81d

README

@@ -1,35 +0,0 @@
-About OsmoMSC
-=============
-
-OsmoMSC is an implementation of the 3GPP MSC (Mobile Switching Centre)
-network element.  It implements the following core functionality within
-the 2G (GSM) and 3G (UMTS) networks:
-
-* mobility management
-* call control (either via built-in MNCC handler or external osmo-sip-connector)
-* USSD (exposed via GSUP)
-* SMS (either via built-in SMSC or external via GSUP)
-
-Historically, OsmoMSC 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.
-
-OsmoMSC was one of the parts split off from the old openbsc.git. Before,
-it was the libmsc part of the old OsmoNITB. Since a true A interface and
-IuCS for 3G support is available, OsmoMSC exists only as a separate
-standalone entity.
-
-OsmoMSC exposes
-- GSUP towards OsmoHLR (or a MAP proxy);
-- A over IP towards a BSC (e.g. OsmoBSC);
-- IuCS towards an RNC or HNB-GW (e.g. OsmoHNBGW) for 3G voice;
-- MNCC (Mobile Network Call Control derived from GSM TS 04.07);
-- SMPP 3.4 (Short Message Peer-to-Peer);
-- The Osmocom typical telnet VTY and CTRL interfaces.
-
-Find OsmoMSC issue tracker and wiki online at
-https://osmocom.org/projects/osmomsc
-https://osmocom.org/projects/osmomsc/wiki

README.md

@@ -0,0 +1,85 @@
+osmo-msc - Osmocom MSC Implementation
+=====================================
+
+This repository contains a C-language implementation of a GSM Mobile Switching
+Centre (MSC) for 2G (GSM) and 3G (UMTS).  It is part of the
+[Osmocom](https://osmocom.org/) Open Source Mobile Communications
+project.
+
+OsmoMSC exposes
+ * A over IP towards BSCs (e.g. OsmoBSC): 3GPP AoIP or SCCPlite
+ * IuCS over IP towards RNCs / HNBGW (e.g. osmo-hnbgw)
+ * The Osmocom typical telnet VTY and CTRL interfaces.
+ * The Osmocom typical statsd exporter.
+
+OsmoMSC implements
+ * mobility management
+ * call control (either via built-in MNCC handler or external osmo-sip-connector)
+ * USSD (exposed via GSUP)
+ * SMS (either via built-in SMSC or external via GSUP)
+
+Homepage
+--------
+
+You can find the OsmoMSC issue tracker and wiki online at
+<https://osmocom.org/projects/osmomsc> and <https://osmocom.org/projects/osmomsc/wiki>.
+
+
+GIT Repository
+--------------
+
+You can clone from the official osmo-msc.git repository using
+
+        git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-msc
+
+There is a web interface at <https://gitea.osmocom.org/cellular-infrastructure/osmo-msc>
+
+
+Documentation
+-------------
+
+User Manuals and VTY reference manuals are [optionally] built in PDF form
+as part of the build process.
+
+Pre-rendered PDF version of the current "master" can be found at
+[User Manual](https://ftp.osmocom.org/docs/latest/osmomsc-usermanual.pdf)
+as well as the [VTY Reference Manual](https://ftp.osmocom.org/docs/latest/osmomsc-vty-reference.pdf)
+
+
+Mailing List
+------------
+
+Discussions related to osmo-msc are happening on the
+openbsc@lists.osmocom.org mailing list, please see
+<https://lists.osmocom.org/mailman/listinfo/openbsc> for subscription
+options and the list archive.
+
+Please observe the [Osmocom Mailing List
+Rules](https://osmocom.org/projects/cellular-infrastructure/wiki/Mailing_List_Rules)
+when posting.
+
+Contributing
+------------
+
+Our coding standards are described at
+<https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards>
+
+We us a gerrit based patch submission/review process for managing
+contributions.  Please see
+<https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit> for
+more details
+
+The current patch queue for osmo-msc can be seen at
+<https://gerrit.osmocom.org/#/q/project:osmo-msc+status:open>
+
+
+History
+-------
+
+OsmoMSC originated from the OsmoNITB project, which started as a minimalistic
+all-in-one implementation of the GSM Network. In 2017, OsmoNITB 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.
+
+OsmoMSC was one of the parts split off from the old openbsc.git.