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-rw-r--r--OsmoMSC/images/sgs-mt_call_idle.msc17
1 files changed, 17 insertions, 0 deletions
diff --git a/OsmoMSC/images/sgs-mt_call_idle.msc b/OsmoMSC/images/sgs-mt_call_idle.msc
new file mode 100644
index 0000000..b3cff3c
--- /dev/null
+++ b/OsmoMSC/images/sgs-mt_call_idle.msc
@@ -0,0 +1,17 @@
+msc {
+ hscale=2;
+ UE, ENB [label="eNodeB"], BSS, MME, VLR [label="MSC/VLR"], PSTN;
+
+ VLR <= PSTN [label="ISUP IAM or SIP INVITE"];
+ MME <= VLR [label="SGsAP PAGING REQUEST"];
+ ENB <= MME [label="Paging"];
+ UE <= MME [label="Paging"];
+
+ UE => MME [label="Extended Service Req"];
+ MME => VLR [label="SGsAP SERVICE REQUEST"];
+ ENB <= MME [label="Initial UE Ctx Setup"];
+
+ UE => BSS [label="Paging Response"];
+ BSS => VLR [label="COMPL L3 (PAGING RESP)"];
+ UE <=> VLR [label="Normal 2G Voice Call"];
+}