This last method is very unreliable and incompatible with voice compression; it will only work when using the uLaw or aLaw codecs. Do not use inband unless the server or providers provides you no other choice.
This last method is very unreliable and incompatible with voice compression; it will only work when using the uLaw or aLaw codecs. Do not use inband unless the server or providers provides you no other choice.