Yealink Skype for Business HD IP Phones Administrator Guide282Parameter Permitted Values DefaultDescription:Configures the sending volume of the handset.Note: We recommend that you modify this parameter cautiously. An unreasonable valuemay render the voice quality bad. If you change this parameter, the Skype for Businessphone will reboot to make the change take effect.Web User Interface:NonePhone User Interface:Nonevoice.headset_send Integer from -50 to 50 0Description:Configures the sending volume of the headset.Note: We recommend that you modify this parameter cautiously. An unreasonable valuemay render the voice quality bad. If you change this parameter, the Skype for Businessphone will reboot to make the change take effect.Web User Interface:NonePhone User Interface:NoneAudio CodecsCODEC is an abbreviation of COmpress-DECompress, capable of coding or decoding a digitaldata stream or signal by implementing an algorithm. The object of the algorithm is to representthe high-fidelity audio signal with minimum number of bits while retaining the quality. This caneffectively reduce the frame size and the bandwidth required for audio transmission.The audio codec that the Skype for Business phone uses to establish a call should be supportedby the SIP server. When placing a call, the Skype for Business phone will offer the enabled audiocodec list to the server and then use the audio codec negotiated with the called party accordingto the priority.The following table lists the audio codecs supported by each phone model:Skype for Business phoneModelSupported Audio Codecs Default Audio CodecsT48G/T46G/T42G/T41P G722, PCMA, PCMU, G729,G726-16, G726-24, G726-32,G722, PCMA, PCMU,G729
