A:AnswerIf people are not able to hear you during calls, the handset might be put on MUTE mode. In order to exit, you need to press MUTE while in a call. If you are referring to the volume of the ringtone for incoming calls, you can adjust by pressing MENU # 1 6 0 on the handset > press arrow down repeatedly to increase volume > press SAVE.
A:AnswerI have had no issues with range and I am always walking outdoors with the phone. It is my opinion that from what I have experienced that range is great.
A:AnswerThank you for reaching out. Additional handsets are being sold separately with the retailers. We would kindly recommend you to look for the part number KX-TGFA51.
A:AnswerThank you for your interest in our products. The KX-TGE432B has two handsets and the KX-TGE633M has 3. The units have a different design as well.
A:AnswerThank you for reaching out! The unit works with landline. For VoIP services, please contact the provider, as they more information about installation requirements.