From fca59bea770346cf1c1f9b0e00cb48a61b44a8f3 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 25 Oct 2015 21:00:20 +0100 Subject: import of old now defunct presentation slides svn repo --- 2009/foss-mobile_world-seville2009/html/mgp00060.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 2009/foss-mobile_world-seville2009/html/mgp00060.txt (limited to '2009/foss-mobile_world-seville2009/html/mgp00060.txt') diff --git a/2009/foss-mobile_world-seville2009/html/mgp00060.txt b/2009/foss-mobile_world-seville2009/html/mgp00060.txt new file mode 100644 index 0000000..1d86823 --- /dev/null +++ b/2009/foss-mobile_world-seville2009/html/mgp00060.txt @@ -0,0 +1,14 @@ +FOSS in the Mobile World +GSM A-bis interface + + +BSC <-> BTS Interface +is called A-bis +has the following control layers on E1 TS1 +L2ML (Layer 2 Management) +TEI management similar to ISDN +OML (Organization & Maintenance) +System parameters, events +RSL (Radio Subsystem Layer) +has encoded voice data (TRAU frames) on other E1 TS + -- cgit v1.2.3