diff options
Diffstat (limited to 'doc/manuals/chapters/overview.adoc')
| -rw-r--r-- | doc/manuals/chapters/overview.adoc | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/doc/manuals/chapters/overview.adoc b/doc/manuals/chapters/overview.adoc index 566124a3a..2ff92faab 100644 --- a/doc/manuals/chapters/overview.adoc +++ b/doc/manuals/chapters/overview.adoc @@ -23,16 +23,16 @@ OsmoNITB/OsmoBSC/OsmoBTS, the PCU is co-located within the BTS. [graphviz] ---- digraph G { - rankdir=LR; - MS0 [label="MS"] - MS1 [label="MS"] - MS0->BTS [label="Um"] - MS1->BTS [label="Um"] - BTS->BSC [label="Abis"] - BSC->MSC [label="A"] - BTS->PCU [label="pcu_sock"] - PCU->SGSN [label="Gb"] - SGSN->GGSN [label="GTP"] + rankdir=LR; + MS0 [label="MS"]; + MS1 [label="MS"]; + MS0->BTS [label="Um"]; + MS1->BTS [label="Um"]; + BTS->BSC [label="Abis"]; + BSC->MSC [label="A"]; + BTS->PCU [label="pcu_sock"]; + PCU->SGSN [label="Gb"]; + SGSN->GGSN [label="GTP"]; } ---- @@ -68,14 +68,6 @@ The GPRS Mobility Management implementation is quite simplistic at this point. It supports the GPRS ATTACH and GPRS ROUTING AREA UPDATE procedures, as well as GPRS ATTACH and GPRS DETACH. -However, as the SGSN currently does not implement any type of HLR -access, it is not able to authenticate a subscriber or even check if the -subscriber exists at all. As such, all non-roaming subscribes are -allowed to attach to OsmoSGSN. Non-roaming means that the first 5 -digits of the IMSI must match the MCC and MNC of the cell that the -subscriber is registering to. - - ==== LLC Implementation The LLC (Logical Link Control) implementation of OsmoSGSN only supports |