Hi All,
We want to run two independent ARFCNs on UmTRX using the two TRXs on the device using osmo-bts, but just as trx 0 is defined in osmobts.cfg we cannot define trx 1. Can someone please help us accomplish this? Also please inform if it is possible that we run one TRX on GSM900 and another on 1800?
Note: we have compiled the openbsc setup as per instructions at http://openbsc.osmocom.org/trac/wiki/network_from_scratch using the jolly/multi-trx branch.
Regards,
Amber & Sarosh
Hi,
I have been following the instructions at
(http://www.rs-online.com/designspark/electronics/eng/blog/running-a-gsm-net
work-on-the-raspberry-pi-2) but have encountered a strange error when I run
the "uhd_usrp_probe" command, stating:
"
linux; GNU C++ version 4.6.3; Boost_105000; UHD_003.008.002-151-gbf4f50de
-- Opening a UmTRX device... 192.168.10.2
Error: RuntimeError: NotImplementedError: holler protocol not implemented
"
I have done a search on Google for the error but there doesn't seem to be
any information on it.
Do you have any idea what is causing it? Any help would be much appreciated.
Should you be interested in knowing the exact commands I ran when following
the instructions, let me know and I'll write them out.
Regards,
Kea
Hello Amber & Sarosh
You have to add these lines below into */etc/osmocom/openbsc.cfg *right
after trx0 configuration
trx 1
rf_locked 0
arfcn 184 (*set the right ARFCN for you here* )
nominal power 23
max_power_red 0
rsl e1 tei 0
timeslot 0
phys_chan_config TCH/F
timeslot 1
phys_chan_config TCH/F
timeslot 2
phys_chan_config TCH/F
timeslot 3
phys_chan_config TCH/F
timeslot 4
phys_chan_config TCH/F
timeslot 5
phys_chan_config TCH/F
timeslot 6
phys_chan_config TCH/F
timeslot 7
phys_chan_config TCH/F
And add into *etc/osmocom/osmo-bts.cfg*
trx 1
rxgain 12
power 0
restart services:* sudo sv restart osmo-trx osmo-bts osmo-nitb*
Regarding trx band dividing, theoretically it might possible but we haven't
tested that
--
Best regards,
Andy
