25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
msc {
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hscale="2";
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ms[label="MS,BSS"],__msc[label="MSC"],hlr[label="HLR proxy"],home[label="Home HLR"];
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ms => __msc [label="CM Service Request / Paging Response"];
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__msc => hlr [label="Send Auth Info Request"];
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hlr rbox hlr [label="Use already set up proxy path"];
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hlr abox hlr [label="there still are unsent auth tuples\nin the cache"];
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hlr rbox hlr [label="(3) Send cached, fresh tuples"];
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__msc <= hlr [label="Send Auth Info Result\ncontaining auth tuples\nfrom the proxy cache"];
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ms rbox __msc [label="Authentication"];
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ms rbox __msc [label="Continue the CM Service / Paging action"];
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hlr abox hlr [label="Note that there are no/few unused tuples in the cache, fill up again"];
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hlr rbox hlr [label="(4) Ask for more auth tuples to cache"];
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hlr => home [label="Send Auth Info Request"];
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--- [label="If the home HLR link is not working"];
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hlr abox hlr [label="no link\nor\nresponse timeout"];
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hlr rbox hlr [label="(5) Set up a timer to retry SAI\n(a few minutes?)"];
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hlr abox hlr [label="Timer triggers"];
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hlr => home [label="Send Auth Info Request"];
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--- [label="If the home HLR link is functional"];
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hlr <= home [label="Send Auth Info Result"];
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hlr rbox hlr [label="store 5 more tuples"];
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}
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