hello the cables are built, now i want to use 2 bs11 in multi drop config. how do i connect the 2 bs11? the e1 comes from the pc to the 1st bs11 left half, left tx, right rx(front view). now i'm on the right half: to which port are the 2 bnc port from the 1st to the 2nd bs11 to be connected? i tried the 2 possible combinations, didn't work (with the openbsc.cfg.2-2). the 2 bs11 are both set to tei=25 (bs11_config told me so) a schematic would be perfect.
second problem: the timer instructions in the openbsc.cfg.2-2 are not executable, the bsc_hack program stops there. i had to remove them. what's the matter with that, why don't these timer instructions work?
answers in german *very* welcome!
Hi Thomas,
On Tue, Dec 07, 2010 at 05:18:35PM +0100, Thomas Ansorg wrote:
the cables are built, now i want to use 2 bs11 in multi drop config. how do i connect the 2 bs11? the e1 comes from the pc to the 1st bs11 left half, left tx, right rx(front view). now i'm on the right half: to which port are the 2 bnc port from the 1st to the 2nd bs11 to be connected? i tried the 2 possible combinations, didn't work (with the openbsc.cfg.2-2). the 2 bs11 are both set to tei=25 (bs11_config told me so)
Did you make sure that the two BTS use different timeslots, and those are the same timeslots that appear in the
bts 0 oml e1 line 1 timeslot 1 sub-slot full bts 1 oml e1 line 1 timeslot 6 sub-slot full
lines?
second problem: the timer instructions in the openbsc.cfg.2-2 are not executable, the bsc_hack program stops there. i had to remove them. what's the matter with that, why don't these timer instructions work?
the config file format has changed since we last used the cfg.2-2, sorry for that. Feel free to submit a patch after you made it work :)
-
Harald Welte -
Thomas Ansorg