Make and answer phone calls Detect tone and pulse digit from the phone line Capture Caller ID Support blind transfer, single-step transfer/conference, consultation transfer/conference, hold, unhold. Control of the local phone handset

通信系统 ITU－T G.729 Annex B 语音压缩标准-ITU-T Recommendation G.729 – Annex B A silence compression scheme for G.729 optimizedfor terminals conforming to recomendationV7.0

与沉默的开关为iOS，精选ios编程学习源码，很好的参考资料。-And the silence of the switch is iOS, select learning IOS programming source code, a good reference.