initial checkin of manuals to public repo

The manuals existed in different form for several years in an internal
sysmocom repository.  However, since they had just recently been
converted from docboox-xml to asciidoc and all files have been
re-shuffled for enabling the public release, there's not much point in
keeping the history with git-filter-branch.
diff --git a/doc/manuals/osmosgsn-vty-reference.xml b/doc/manuals/osmosgsn-vty-reference.xml
new file mode 100644
index 0000000..995e92a
--- /dev/null
+++ b/doc/manuals/osmosgsn-vty-reference.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ex:ts=2:sw=42sts=2:et
+  -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+-->
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V5.0//EN"
+"http://www.docbook.org/xml/5.0/dtd/docbook.dtd" [
+<!ENTITY chapter-vty      SYSTEM      "../common/chapters/vty.xml" >
+<!ENTITY sections-vty     SYSTEM      "generated/docbook_vty.xml"  >
+]>
+
+<book>
+  <info>
+    <revhistory>
+        <revision>
+            <revnumber>v1</revnumber>
+            <date>13th January 2013</date>
+            <authorinitials>hw</authorinitials>
+            <revremark>Initial</revremark>
+        </revision>
+        <revision>
+            <revnumber>v2</revnumber>
+            <date>5th March 2014</date>
+            <authorinitials>hf</authorinitials>
+            <revremark>Update to match osmo-bsc version 0.13.0-305</revremark>
+        </revision>
+    </revhistory>
+
+    <title>OsmoSGSN VTY Reference</title>
+
+    <copyright>
+      <year>2013-2014</year>
+    </copyright>
+
+    <legalnotice>
+      <para>This work is copyright by <orgname>sysmocom - s.f.m.c. GmbH</orgname>. All rights reserved.
+      </para>
+    </legalnotice>
+  </info>
+
+  <!-- Main chapters-->
+  &chapter-vty;
+</book>
+