laforge has submitted this change. ( https://gerrit.osmocom.org/c/osmo-bsc/+/31996 ) Change subject: doc: overview: replace section TRAU mapper / E1 sub-channel muxer ...................................................................... doc: overview: replace section TRAU mapper / E1 sub-channel muxer The manual contains a section about a TRAU mapper / E1 sub-channel muxer. This section seems to be copied from the OsmoNITB manual. In OsmoNITB everything was integrated in one binary, now dealing with TRAU frames is the task of the MGW. Let's remove the section but still leave a word about how Speech traffic is handled/relayed by OsmoBSC. Change-Id: If33589feb80e1b29b4f841b678fe5329b8c06a76 --- M doc/manuals/chapters/overview.adoc 1 file changed, 24 insertions(+), 7 deletions(-) Approvals: Jenkins Builder: Verified pespin: Looks good to me, but someone else must approve laforge: Looks good to me, approved diff --git a/doc/manuals/chapters/overview.adoc b/doc/manuals/chapters/overview.adoc index a27b0bf..aca0c98 100644 --- a/doc/manuals/chapters/overview.adoc +++ b/doc/manuals/chapters/overview.adoc @@ -135,11 +135,13 @@ For more information, see <<net>>, <<bts>> and <<bts-examples>>. -==== TRAU mapper / E1 sub-channel muxer +==== Speech traffic -Unlike classic GSM networks, OsmoBSC does not perform any transcoding. -Rather, a compatible codec is selected for both legs of a call, and -codec frames are passed through transparently. In order to achieve this -with E1 based BTS, OsmoBSC contains a E1 sub-channel de- and -re-multiplexer as well as a TRAU mapper that can map uplink to downlink -frames and vice versa. +OsmoBSC, by itself, does not perform any transcoding or relaying of user plane +speech traffic. This task is handled entirely by a BSC co-located media gateway, +such as OsmoMGW, which will take care of relaying the RTP traffic from the BTS +into the core network. + +In case classic E1 based BTSs are used, OsmoBSC will instruct the MGW to +convert between TRAU frames on the E1 side and RTP frames on the IP based core +network side. -- To view, visit https://gerrit.osmocom.org/c/osmo-bsc/+/31996 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bsc Gerrit-Branch: master Gerrit-Change-Id: If33589feb80e1b29b4f841b678fe5329b8c06a76 Gerrit-Change-Number: 31996 Gerrit-PatchSet: 1 Gerrit-Owner: dexter <pmaier@sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: laforge <laforge@osmocom.org> Gerrit-Reviewer: pespin <pespin@sysmocom.de> Gerrit-MessageType: merged