overview: update section limitations.
The limitations section is outdated. We now have support for osmux and
E1 timeslots with trau frames. However, we did not mention that we still
have no transcoding as well.
Change-Id: Ia0fe8be96bbf880cfcd9d18256f4ac23a6efae79
diff --git a/doc/manuals/chapters/overview.adoc b/doc/manuals/chapters/overview.adoc
index 6a8f3e3..b3b53a5 100644
--- a/doc/manuals/chapters/overview.adoc
+++ b/doc/manuals/chapters/overview.adoc
@@ -77,14 +77,14 @@
=== Limitations
-Osmux is not yet supported in OsmoMGW.
-
-At the moment (July 2018), OsmoMGW only implements RTP proxy / RTP bridge
-type endpoints, to each of which two RTP connections can be established.
-We are planning to add endpoint types for:
+At the moment (November 2020), OsmoMGW implements RTP proxy / RTP bridge
+type endpoints and E1/T1 16k/8k sub-slots with TRAU frames for classic BTS
+support. To the RTP proxy / RTP bridge endpoints two RTP connections can
+be established, which then work as a tandem. E1/T1 endpoints support one
+RTP connection at a time that is associated with a sub-slot on an E1 line.
+We are planning to add further endpoint types for:
- classic E1/T1 timeslots (64kBps alaw/ulaw)
-- classic E1/T1 16k sub-slots with TRAU frames for classic BTS support
- announcement/playout end-points
- conference endpoints