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laforge gerrit-no-reply at lists.osmocom.orglaforge has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/16340 ) Change subject: common/abis.c: make use of RSL TEI from OML IPA RSL Connect ...................................................................... Patch Set 3: > Patch Set 1: > > I am not really sure about this change. I have been playing around with a multi-TRX setup, and noticed that using a different (than 0x00) 'rsl e1 tei' value in osmo-bsc.cfg makes osmo-bts-trx fail to start. I figured out that this value is being sent in the (BSC originated) OML IPA RSL Connect message as 'Stream ID', but osmo-bts does not use it at all. This value also appears in the IPA header as the protocol type. In general, as far as I remember, the different RSL E1 TEI values are primarily used on actual E1 links. So if you have an E1 BTS with multiple TRX, then you may only have a single signaling timeslot for one global/shared OML LAPD connection, and for each TRX you have a separate LAPD connection, differentiated by the TEI. TEI=0 is TRX0, TEI=1 is TRX1, etc. For IPA based Abis, I don't think it really matters all that much, as there are separate TCP connections for each RSL connection, so you don't have a strict requirement to differentiate multiple logical RSL streams in one underlying shared channel. But still it's of course good to support such operation on the BTS side if the BSC does... -- To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/16340 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Change-Id: I5927f59a49724170a63e87be604973f7c9d5d8be Gerrit-Change-Number: 16340 Gerrit-PatchSet: 3 Gerrit-Owner: fixeria <axilirator at gmail.com> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <axilirator at gmail.com> Gerrit-Reviewer: laforge <laforge at osmocom.org> Gerrit-Reviewer: pespin <pespin at sysmocom.de> Gerrit-Comment-Date: Sun, 12 Jan 2020 13:08:05 +0000 Gerrit-HasComments: No Gerrit-Has-Labels: No Gerrit-MessageType: comment -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20200112/42f707e0/attachment.htm>