dgsm Proxy Cache design WIP
Change-Id: Ifa322e84fadd3b04943c8c7024c0e2de4935bed0
diff --git a/doc/manuals/chapters/proxy_cache_more_tuples.msc b/doc/manuals/chapters/proxy_cache_more_tuples.msc
new file mode 100644
index 0000000..5d5fb81
--- /dev/null
+++ b/doc/manuals/chapters/proxy_cache_more_tuples.msc
@@ -0,0 +1,24 @@
+msc {
+ hscale="2";
+ ms[label="MS,BSS"],__msc[label="MSC"],hlr[label="HLR proxy"],home[label="Home HLR"];
+
+ ms => __msc [label="CM Service Request / Paging Response"];
+ __msc => hlr [label="Send Auth Info Request"];
+ hlr rbox hlr [label="Use already set up proxy path"];
+ hlr abox hlr [label="there still are unsent auth tuples\nin the cache"];
+ hlr rbox hlr [label="(3) Send cached, fresh tuples"];
+ __msc <= hlr [label="Send Auth Info Result\ncontaining auth tuples\nfrom the proxy cache"];
+ ms rbox __msc [label="Authentication"];
+ ms rbox __msc [label="Continue the CM Service / Paging action"];
+ hlr abox hlr [label="Note that there are no/few unused tuples in the cache, fill up again"];
+ hlr rbox hlr [label="(4) Ask for more auth tuples to cache"];
+ hlr => home [label="Send Auth Info Request"];
+ --- [label="If the home HLR link is not working"];
+ hlr abox hlr [label="no link\nor\nresponse timeout"];
+ hlr rbox hlr [label="(5) Set up a timer to retry SAI\n(a few minutes?)"];
+ hlr abox hlr [label="Timer triggers"];
+ hlr => home [label="Send Auth Info Request"];
+ --- [label="If the home HLR link is functional"];
+ hlr <= home [label="Send Auth Info Result"];
+ hlr rbox hlr [label="store 5 more tuples"];
+}