OsmoPCU: expand NS documentation
Add table with NS messages.
Add corresponding sections.
Clarify spec numbers.
diff --git a/doc/manuals/osmopcu-gb.adoc b/doc/manuals/osmopcu-gb.adoc
index 6ebcf18..620d336 100644
--- a/doc/manuals/osmopcu-gb.adoc
+++ b/doc/manuals/osmopcu-gb.adoc
@@ -37,6 +37,7 @@
The OsmoPCU Gb interface consists of the NS (Network Services) and
BSSGP (Base Station Subsystem Gateway Protocol), encapsulated in UDP
(User Datagram Protocol) and IP (Internet Protocol) version 4.
+Use of other underlying protocols (e. g. FrameRelay) is not supported.
.UDP port numbers used by OsmoPCU Gb/IP
[options="header",width="50%",cols="35%,65%"]
@@ -60,6 +61,7 @@
include::gb/gb-startup.msc[]
----
+[[ident]]
=== Identities
The Gb interface identities of the PCU are configured via BSC ->
@@ -70,8 +72,8 @@
BVCI:: BSSGP Virtual Connection Identifier
For an explanation of those identifiers and their use in the NS and
-BSSGP protocols, please see the reelvant 3GPP specifications for NS
-and BSSGP.
+BSSGP protocols, please see the reelvant 3GPP specifications for NS (TS 08.16)
+and BSSGP (TS 08.18).
In most cases, all above identities belong to different namespaces and
must be unique within their respective namespace and within the SGSN