-- Executing Dial("SIP/200-0b89", "SIP/tzm1/3207678164") in new stack
    -- Called tzm1/3207678164
    -- SIP/tzm1-b235 is making progress passing it to SIP/200-0b89
    -- SIP/tzm1-b235 is ringing
Aug 10 18:37:09 NOTICE[27229]: channel.c:1703 ast_set_write_format: Unable to find a path from slin to g729
Aug 10 18:37:09 WARNING[27229]: indications.c:77 playtones_alloc: Unable to set 'SIP/200-0b89' to signed linear format (write)