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diff --git a/OsmoHLR/chapters/overview.adoc b/OsmoHLR/chapters/overview.adoc deleted file mode 100644 index 45802ca..0000000 --- a/OsmoHLR/chapters/overview.adoc +++ /dev/null @@ -1,69 +0,0 @@ -[[overview]] -== Overview - -This manual should help you getting started with OsmoHLR. It will cover -aspects of configuring and running the OsmoHLR. - -[[intro_overview]] -=== About OsmoHLR - -OsmoHLR is Osmocom's minimal implementation of a Home Location Register (HLR) -for 2G and 3G GSM and UMTS mobile core networks. Its interfaces are: - -- GSUP, serving towards OsmoMSC and OsmoSGSN; -- A local SQLite database; -- The Osmocom typical telnet VTY and CTRL interfaces. - -Originally, the OpenBSC project's OsmoNITB all-in-one implementation had an -integrated HLR, managing subscribers and SMS in the same local database. Along -with the separate OsmoMSC and its new VLR component, OsmoHLR was implemented -from scratch to alleviate various shortcomings of the internal HLR: - -- The separate HLR allows using centralized subscriber management for both - circuit-switched and packet-switched domains (i.e. one OsmoHLR for both - OsmoMSC and OsmoSGSN). - -- VLR and HLR brought full UMTS AKA (Authentication and Key Agreement) support, - i.e. Milenage authentication in both the full 3G variant as well as the - backwards compatible 2G variant. - -- In contrast to the OsmoNITB, the specific way the new OsmoMSC's VLR accesses - OsmoHLR brings fully asynchronous subscriber database access. - -Find the OsmoHLR issue tracker and wiki online at - -- https://osmocom.org/projects/osmo-hlr -- https://osmocom.org/projects/osmo-hlr/wiki - - -[[fig-gsm]] -.Typical GSM network architecture used with OsmoHLR -[graphviz] ----- -digraph G { - rankdir=LR; - subgraph cluster_hlr { - label = "OsmoHLR"; - GSUP [label="GSUP server"] - DB [label="SQLite DB"] - GSUP->DB - DB->CTRL [dir="back"] - DB->VTY [dir="back"] - } - - Admin [label="Admin and\nMaintenance"] - SW [label="3rd party software\nintegration"] - VTY->Admin [dir="back"] - CTRL->SW [dir="back"] - - MSC [label="MSC/VLR"] - MSC->GSUP [label="GSUP"] - SGSN->GSUP [label="GSUP"] - - BSC->MSC - HNBGW->MSC - HNBGW->SGSN - PCU->SGSN -} ----- - |