Avaya is proudly announcing GA of its product Avaya Vantage in May 2017. They think it as a milestone. LOL! Few years before Avaya launched "Flare" with similar excitement. Flare was also "all glass" ip phone. What happened? They failed badly. No customer showed interest and the product quality was also not upto the mark. What Avaya did? They discontinued development on Avaya Flare. Now they repackaged it using Android and again they are relaunching it with great excitement. They are calling it innovation, but Alas!!! Avaya's competitors are already selling All glass IP phones from last several years. They are very stable with significant market share. Most of the luxury hotels are already using these phones with customised apps on it.
https://www.ubnt.com/unifi-voip/uvp/
- only $149
Another one from Grandstream Networks:
http://www.grandstream.com/products/ip-video-telephony/ip-video-phones-android/product/gxv3275
The GXV3275 IP Video Phone for Android™ delivers a powerful voice, video and multimedia business communications experience to keep workers in-touch and up-to-date. This one-of-a-kind 6-line IP phone features a tablet-like 7 inch touch screen and, in addition to voice calls allows users to keep in touch with co-workers and clients through a variety of video calling platforms (any Android app, such as Skype, Google Hangouts, and more). This IP Video Phone for Android offers full access to the Google Play Store and the millions of Android apps – including powerful business productivity apps like SalesForce1, GoToMeeting, service provider apps and more. Additional features include integrated Bluetooth for pairing of headset and mobile devices for contact book/calendar exchange and call transferring, Gigabit ports, integrated WiFi, and more.