OpenBSC February 2010

openbsc@lists.osmocom.org

10 participants
13 discussions

Reseting Unit-ID on nanoBTS
by Bjarni S. Sigurðsson 05 Feb '10

05 Feb '10

Hello, I have a nanoBTS from ipaccess. I used ipaccess-config to set the Unit-ID of the nanoBTS and also the Primary OML IP address. Everything worked OK and OpenBSC and the nanoBTS where communicating. My problem now is that I want to connect the nanoBTS back to my original BSC (from Zynetix). By using ipaccess-config I set the OML IP address back to what it was originally but the unit does not connect to the original BSC. I have two other nanoBTS's and their Unit-ID is 65535/255/255 before they 'sign up' to the BSC, where they get another Unit-ID. I've tried using ipaccess-config to set the Unit-ID to that value but get an error: "Failure to set attribute. This seems fatal" Does anyone know how I can reset the Unit-ID to 65535/255/255 ? Best regards, Bjarni S. Sigurdsson

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RSL "Channel Release" Sequence
by Holger Freyther 05 Feb '10

05 Feb '10

Hi, I'm currently implementing Early Assignment in the On Waves branch and as part of this I will have to take care of RSL channel releases as well. Someone else was pointing this out as well but I could not find the email. Our channel release is a bit sloppy and I will fix it and start using T3111 and T3109 in the rsl code for doing so. In the "normal" case (bsc on the left, bts on the right): RSL Channel Release --> <- RSL Channel Release Ack <- Release Indication SAPI=0 RSL Channel Release -> <- RSL Channel Release Ack In the "abnormal" case: <- Error Indication RSL Channel Release -> <- RSL Channel Release Ack <- Release Indication SAPI=0 RSL Channel Release -> <- RSL Channel Release Ack I'm going to change that into the following way. "normal" case: 1.) Release the established SAPIs 2.) After their ACKs release the Channel Have all this guarded by T3109 (or whatever is more appropriate) "abnormal" case: 1.) Start T3109 2.) Then do the normal case. During the shutdown sequence I need to make sure that we are not allocating the channel again. I'm thinking of either using the chan mode Harald was introducing while doing the hand over work, or just a "locked" flag to not assign the channel. I hope to be done with this by tomorrow or the day after, anyone has comments or ideas on how to approach this? z.

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Problem after create-trx1, query gives no info about it.
by till 05 Feb '10

05 Feb '10

Hi, i have problems bringing up the second TRX. I used the following procedure: ./bs11_config -p /dev/ttyUSB0 disconnect ./bs11_config -p /dev/ttyUSB0 create-trx1 After reboot the query tells me: ./bs11_config -p /dev/ttyUSB0 query LMT LOGON: ACK PHASE: 3 Normal MBCCU0: Load MBCCU1: Load Abis-link: Restoring ... BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW (GSM) LMT LOGOFF: ACK Now i wondered where is the trx1, did anyone has a similar problem? I have the BS-11 ESN PCB Serial Number: 001127 which should have two TRX. Greets & thx Till -- Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3.5 - sicherer, schneller und einfacher! http://portal.gmx.net/de/go/chbrowser

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OpenBSC February 2010