Jul  9 21:31:10 WARNING[30044]: chan_sip.c:1836 sip_write: Asked to transmit frame type 256, while native formats is 4 (read/write = 4/4)
Jul  9 21:31:10 WARNING[30044]: translate.c:129 ast_translator_build_path: No translator path from alaw to unknown
Jul  9 21:31:10 WARNING[30044]: file.c:224 ast_writestream: Unable to translate to format wav, source format g729
Jul  9 21:31:10 WARNING[30044]: channel.c:1669 ast_write: Failed to write data to channel monitor write stream