At boot time, in USB debug port you can see such information as lms chip version, speed of Ethernet phy, MAC and IP address of UmTRX board (and much more, it's defined in ZPU bootloader firmware).

Another question wrt OpenBTS configuration, is it sufficient to do:
./configure --with-uhd
or does umtrx need other options (--with-resamp, --with-extref)?

OpenBTS with UmTRX board required only --with-uhd option.

Also I assume the transceiver code is the Transceiver52M version and I
should just do
cd apps
ln -s ../Transceiver52M/transceiver .

Yes, You're right.

Regards,
Andrew Karpenkov

2012/12/27 <stephane@shimaore.net>

(Not a biggy: what is the role of the "USB Debug" port?)