Hi,
we have some troubles finding the network on our cell-phones. There are a lot of suspicious messages, we can't really make sense out of.
Example: bs11_config_query shows the following line:
BS11 Attributes" a line: E1 Channel: Port=255 Timeslot=161 Subslot=39
This looks completely broken (misparsed by bs11_config?)
Another issue are the Set- and Work-values of the Phase-Locked-Loop:
We synchronized it with the ISDN network (isdnsync) and it leveled off to 1104 for the Work-Value, Set-Value, however, is 1082. I suspect this is ok and set-value is some informational value only (perhaps the value of the last calibration?).
One more question about the radio carrier: On startup of bsc_hack we get the following message:
OC=RADIO CARRIER(02) INST=(00,01,ff) STATE CHG: OP_STATE=Disabled AVAIL=In test(00)
Is this normal behaviour?
Apart from all this questions, does anyone have some more hints what we should look at? We tried different cell phones, tried switching them off and on, but without any success.
We're using the latest git version of openbsc.
Thank you for your help!
Martin
On Aug 31, 2009, at 11:56 AM, openbsc@elxsi.de wrote:
BS11 Attributes" a line: E1 Channel: Port=255 Timeslot=161 Subslot=39 This looks completely broken (misparsed by bs11_config?)
It is okay, I see similiar message with my BS-11.
Another issue are the Set- and Work-values of the Phase-Locked-Loop: We synchronized it with the ISDN network (isdnsync) and it leveled off to 1104 for the Work-Value, Set-Value, however, is 1082. I suspect this is ok and set-value is some informational value only (perhaps the value of the last calibration?).
What type of E1 adapter do you use? If you use an accurate clock source, Work and Set values should be similiar (I have Set Value 1024, Work value 1023, and I've used Nateks E1 SDH Mux with High-Stability Stratum oscillator when calibrating). See http://bs11-abis.gnumonks.org/trac/wiki/isdnsync
One more question about the radio carrier: On startup of bsc_hack we get the following message: OC=RADIO CARRIER(02) INST=(00,01,ff) STATE CHG: OP_STATE=Disabled AVAIL=In test(00) Is this normal behaviour?
Of course, no. This means that you have no carrier turned on. It is very helpful to use spectrum analyzer in order to ensure that you have correct carrier with correct frequency according to the selected ARFCN.
Apart from all this questions, does anyone have some more hints what we should look at? We tried different cell phones, tried switching them off and on, but without any success. We're using the latest git version of openbsc.
What version of Linux kernel and mISDN do you use? I had some problems with built-in mISDN also, and get all the stuff working after downloading and installing latest mISDN stack from misdn.org
Sergey.
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openbsc＠elxsi.de -
Sergey V. Efimoff