Hi!
JFYI: Software load through the A-bis / E1 interface is only marginally
faster than through the serisal RS232 line.
The theoretical maximum speed is the 64kbps of the E1 timeslot, which should give quite a bit of improvement over the 19200bps serial line.
However, the BS-11 is throttling down the transver even via A-bis. I have
tried to increase the window size to 20 (LMT has a max of 8. I tried up to 32
but then the transfer fails)
The speed that I'm getting now is somewhere around 1232 bytes per second, which
is about 9656bps. Do they use a 9600bps serial line somewhere inside the
BS-11 to route those software updates through?
I haven't finished an entire transfer, but it seems like the transfer would
take some 36 minutes using this method. Not too far off the 45minutes
that we get with LMT or bs11_config.
I guess "in the field" this doesn't really matter since they can install
the software image while the BTS is still in operation, and then at some
point schedule a reboot which activates the new software.
p.s.: yes, I removed all delays (usleep calls) from misdn.c before testing.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Hi!
Just a quick update on bs11_config, the program used for BS-11 configuration
over a serial line.
I have now
* successfully loaded SMU safety and software (SWL) from regular files
in the filesystem (not as easy since BS-11 firmware comes as multiple
files that need to be loaded consecutively)
* created all objects required for minimal config,
including TRX1/PA1 activation
* display the A-bis/T link state, phase/subphase and MBBCU status
from bs11_config
Furthermore, I have added abis_nm functions to
* set the A-bis external time (important for getting correct timestamps
for alarms)
* obtain the BS-11 serial number (as printed on the case).
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
