osmo-bts-trx channel activation

Hi. This has been asked last year but to no avail, let's try again. How logical channels are (de)activated in osmo-bts-trx? For example in all the other models there's sapi_deactivate_cb() callback but osmo-bts-trx doesn't seem to be using sapi_cmd at all. To put this into perspective - while working on https://projects.osmocom.org/issues/1575 I got to activate/deactivate lchans when SI3 is received. This already works for sysmobts but I'd like to do the same for osmo-bts-trx as well. Is there any documentation somewhere describing how it works there? Or maybe someone more familiar with the code could help to shed the light on it? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte