20 Sep
2016
20 Sep
'16
12:35 p.m.
Hi,
While ruining osmo-bts and osmo-trx via VTY we tried to change parameter
like Band ,ARFCN MS max power.
We observed that once ARFCN is changed on VTY TRX does not switch to new
ARFCN.
Same behavior has been observed with Band and MS-Max-Power and RF-Locked
0/1 parameter.
Request someone who is running osmo-stack has controlled network ,please
reply or any document/pointer is appreciated.
BR
Dhananjay
20 Sep
20 Sep
4:05 p.m.
On 20 Sep 2016, at 12:35, Dhananjay kumar
<dhananjay.cse(a)gmail.com> wrote:
Dear Dhananjay,
While ruining osmo-bts and osmo-trx via VTY we tried
to change parameter like Band ,ARFCN MS max power.
We observed that once ARFCN is changed on VTY TRX does not switch to new ARFCN.
Same behavior has been observed with Band and MS-Max-Power and RF-Locked 0/1 parameter.
Request someone who is running osmo-stack has controlled network ,please reply or any
document/pointer is appreciated.
few VTY parameters are applied right-away. We have:
* Some parameters are applied on restart only (e.g. channel combination of a BTS)
* Some on new BTS connection (e.g. arfcn)
* Some on next MS connection
It would be nice if you could help us by first documenting when/which change is applied
and maybe help on creating a concept for consistent handling. E.g. a lot of other
equipment requires to bring a system into a "lock" state, do the modification,
unlock (the time things will be applied).
holger
21 Sep
21 Sep
2:17 p.m.
Dear Holger,
Many thanks for your mail.
Based on your suggestion we did experiment on B210 with osmo-stack for
run-time network parameter control from VTY.
- Parameter change related to MS takes effects when New MS is latches
to Network. Example : MS_Max_Power
- Parameter change related to TRX takes effects when TRX is re-started.
Example : RF_Lock 0
- Parameter change related to BTS takes effects when BTS and TRX is
restared. Example : Band/ARFCN
One more query regarding loop-back call :
"bts <0-0> trx <0-0> ts <0-7> lchan <0-1> loopback",
we tried this command to start loop-back call once MS is registered to the
network.
But we are not seeing any loop-back call happening in nitb and osmo-bts
logs.
Could you please let us know more on this loop-back call. How we can use
this ?
BR
Dhananjay
On Tue, Sep 20, 2016 at 7:35 PM, Holger Freyther <holger(a)freyther.de> wrote:
Dear Dhananjay,
> We observed that once ARFCN is
changed on VTY TRX does not switch to new
ARFCN.
> Request someone who is running
osmo-stack has controlled network ,please
reply or any document/pointer is appreciated.
few VTY parameters are applied right-away. We have:
* Some parameters are applied on restart only (e.g. channel combination of
a BTS)
* Some on new BTS connection (e.g. arfcn)
* Some on next MS connection
It would be nice if you could help us by first documenting when/which
change is applied and maybe help on creating a concept for consistent
handling. E.g. a lot of other equipment requires to bring a system into a
"lock" state, do the modification, unlock (the time things will be applied).
holger
On 20 Sep 2016, at 12:35, Dhananjay kumar
<dhananjay.cse(a)gmail.com>
wrote:
While ruining osmo-bts and osmo-trx via VTY we
tried to change
parameter like Band ,ARFCN MS max power.
Same behavior has been observed with Band and
MS-Max-Power and RF-Locked
0/1 parameter.
2:19 p.m.
On 21 Sep 2016, at 14:17, Dhananjay kumar
<dhananjay.cse(a)gmail.com> wrote:
Dear Holger,
Hi!
Many thanks for your mail.
Based on your suggestion we did experiment on B210 with osmo-stack for run-time network
parameter control from VTY.
• Parameter change related to MS takes effects when New MS is latches to Network.
Example : MS_Max_Power
• Parameter change related to TRX takes effects when TRX is re-started. Example :
RF_Lock 0
• Parameter change related to BTS takes effects when BTS and TRX is restared. Example
: Band/ARFCN
One more query regarding loop-back call :
"bts <0-0> trx <0-0> ts <0-7> lchan <0-1> loopback",
please consider contributing this to our manual. Together the software is moving forward.
thank you
holger
5:16 p.m.
New subject: bts lchan loopback vty command -- was: Query on run time control of network with VTY
On Wed, Sep 21, 2016 at 05:47:34PM +0530, Dhananjay kumar wrote:
One more query regarding loop-back call :
"bts <0-0> trx <0-0> ts <0-7> lchan <0-1> loopback",
we tried this command to start loop-back call once MS is registered to the
network.
But we are not seeing any loop-back call happening in nitb and osmo-bts
logs.
This command only sets a loopback flag on a given lchan and does not actually
initiate a call. IIUC after setting the loopback, the loopback should happen
when you make a voice call using that time slot and lchan.
It might make more sense to start a call and set the loopback on the lchan
while the call is active. So this does not replace the other MS.
From the code it seems the loopback flag is not cleared before / after a voice
call, so it looks like the given lchan will remain a loopback for any number of
calls (that end up on that lchan).
I'm not 100% sure though, only skimmed the code briefly,
I've never used this before.
~Neels
30 Sep
30 Sep
9:20 p.m.
New subject: bts lchan loopback vty command -- was: Query on run time control of network with VTY
Thanks Neels.
Where we can get more information on this? We would like to use this
loopback for BER measurements.
Is it suitable to do that?
On Wed, Sep 21, 2016 at 8:46 PM, Neels Hofmeyr <nhofmeyr(a)sysmocom.de> wrote:
On Wed, Sep 21, 2016 at 05:47:34PM +0530, Dhananjay
kumar wrote:
One more query regarding loop-back call :
"bts <0-0> trx <0-0> ts <0-7> lchan <0-1> loopback",
we tried this command to start loop-back call once MS is registered to
the
network.
But we are not seeing any loop-back call happening in nitb and osmo-bts
logs.
This command only sets a loopback flag on a given lchan and does not
actually
initiate a call. IIUC after setting the loopback, the loopback should
happen
when you make a voice call using that time slot and lchan.
It might make more sense to start a call and set the loopback on the lchan
while the call is active. So this does not replace the other MS.
From the code it seems the loopback flag is not cleared before / after a
voice
call, so it looks like the given lchan will remain a loopback for any
number of
calls (that end up on that lchan).
I'm not 100% sure though, only skimmed the code briefly,
I've never used this before.
~Neels
1 Oct
1 Oct
3:48 p.m.
New subject: bts lchan loopback vty command -- was: Query on run time control of network with VTY
On 30 Sep 2016, at 21:20, Mayuri Tendulkar
<mayuri.tendulkar(a)gmail.com> wrote:
Thanks Neels.
Dear Mayuri,
Where we can get more information on this? We would
like to use this loopback for BER measurements.
Is it suitable to do that?
a Free Software project like Osmocom exists because developers want to collaborate and it
survives by people donating some (or a lot) of their time to make it better and companies
(like Sysmocom) allowing developers to work on it. In your position I think you have the
following options:
a.) Your company contracts someone that knows how to modify osmo-trx to do what you want
for your measurement.
b.) You make yourself familiar with osmo-trx, fix/extend the code, write documentation and
share it with the community.
either way, please share your findings and result with us.
thank you
holger
2786
days inactive
2797
days old
6 comments
4 participants
participants (4)
-
Dhananjay kumar -
Holger Freyther -
Mayuri Tendulkar -
Neels Hofmeyr