Ring on Busy

[Peter_Yealink]

Hello Eldon,

Firstly, I'd like to expalin why we won't implement this change. If it rings up for the secondary call, the ringtone will interrupt the current call quality, so we make it to get a call waiting tone to remind user there's another call comes in. If you think the waiting tone is too low to be notice, you can change the tone frenquency to improve volume and duration, more information you can refer to: http://support.yealink.com/faq/faqInfo?id=215

Many thanks.

Best Regards.