Hi,

We have a Litecell 1.5 unit. It is updated to the latest packages on the 
nightly build and configured to an osmo-bsc set up on an another machine.

On mobile phones, the network does not show the short or long name set, instead 
it shows just numbers "09070" and calls can not be made.

This has happened to us before when there was problem with the clock 
calibration on the BTS.

A GPS device is attached to the BTS, and when running cgps, there is a 3D Fix 
and a correct GPS location coordinates show up.

The lc15 bts should be able to calibrate automatically using the lc15bts-mgr 
package, however, it seems like it is failing to do so.

When we tried stopping the lc15bts-mgr service and start it manually to log the 
output by running:

/usr/bin/lc15bts-mgr -s -c /etc/osmocom/lc15bts-mgr.cfg

We notice the following errors:

```
Failed to open /mnt/storage/var/run/lc15bts-mgr/volt-supply-max due to 'No such 
file or directory' error
<0000> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_misc.c:315 Total hours 
of Operation: 393
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:271 Going 
to calibrate the system.
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:121 Last 
GPS 3D fix can not read (-2). Last GPS 3D fix sets to zero
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:126 GPS 
has no fix
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:126 Going to 
check for watchdog notification.
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:67 Missing 
watchdog events: e:0x000000000000002e,m:0x000000000000007f
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:126 Going to 
check for watchdog notification.
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:67 Missing 
watchdog events: e:0x000000000000002f,m:0x000000000000007f
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:271 Going 
to calibrate the system.
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:121 Last 
GPS 3D fix can not read (-2). Last GPS 3D fix sets to zero
<0003> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_mgr_calib.c:126 GPS 
has no fix
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:126 Going to 
check for watchdog notification.
<0004> ../../../git/src/osmo-bts-litecell15/misc/lc15bts_swd.c:67 Missing 
watchdog events: e:0x000000000000002f,m:0x000000000000007f

```

It seems the lc15bts_mgr service can not read the values from the GPS device 
for some reason, can someone please advise what might be causing this issue?


Best Regards,

Rayan

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