GSM 05.03 code re-licensing

Hello everyone! Right now I am moving some code from OsmoBTS to libosmocore, exactly OsmoBTS/src/osmo-bts-trx/gsm0503*. And there is a licensing conflict, because this code licensed under AGPLv3+, but libosmocore code is GPLv2+. So, this is why I am contacting all authors/copyright holders. The question is: does everyone agree to re-license the code under GPLv2-or-later and move it code to libosmocore? Thanks in advance! With best regards, Vadim Yanitskiy.