【實用商業app】AT&T Enhanced Push-To-Talk|最夯免費app-gigacircle

Enhanced PTT is currently supported on iPhone 4, 4s, 5, 5s, 5c, 6 and 6 Plus, iPad Air, iPad Mini devices, and requires AT&T; wireless service plus monthly Enhanced PTT subscription.AT&T; Enhanced PTT is the premier enterprise-grade carrier push-to-talk solution for large or small organizations, with superior performance, features and reliability. Enhanced PTT uses next-generation Voice over IP technology to deliver one-to-one or group calls over the AT&T; 3G or 4G networks or on compatible WiFi networks.Key features of Enhanced PTT include:* Fast call setup times and low latency* Advanced push-to-talk features including real-time presence, Instant Personal Alerts, free/busy status and Supervisory Override* Scalable to support large contact lists and talk groups* Organizations can use a Corporate Admin Tool for easy management of users and groupsEnhanced PTT is available for AT&T; Wireless customers only and cannot be used with international roaming. Continued use of GPS running in the background can dramatically decrease battery life. For more information on getting started with AT&T; Enhanced PTT, visit http://www.corp.att.com/enhanced-push-to-talk/iphone.