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Diffstat (limited to 'doc/manuals/chapters/interfaces.adoc')
| -rw-r--r-- | doc/manuals/chapters/interfaces.adoc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/manuals/chapters/interfaces.adoc b/doc/manuals/chapters/interfaces.adoc index 242fa235..127d4dc5 100644 --- a/doc/manuals/chapters/interfaces.adoc +++ b/doc/manuals/chapters/interfaces.adoc @@ -113,6 +113,32 @@ Contrary to that, many classic E1-based implementations of the GSM RAN co-locate the PCU with the BSC. However, the GSM specifications keep the location up to the implementor. +The GPRS network architecture is shown in <<fig-gprs-pcubts>>. + +[[fig-gprs-pcubts]] +.GPRS network architecture +[graphviz] +---- +digraph G { + rankdir=LR; + MS0 [label="MS"]; + MS1 [label="MS"]; + BTS; + BSC; + MSC; + PCU; + SGSN; + GGSN; + 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"]; +} +---- + The PCU socket interface serves the following purposes: * to pass PCU relevant configuration from BTS to PCU |