Fixed wireless phone 116 types of chord rings and vivid singing. 2phone book storing up to 100 pieces of numbers. 3normally ringing and receiving calls even when the handset is off hook.. 4support carrier lock. 5receiving and sending short messages. 6friendly interface using both text and images. 7incoming caller id, dialed calls, missed calls records. 8prefix ip ahead of the long distance call. 9hands free and redial function. 10128*64 lcd with background light, showing five lines of calling information, date and time. 11displaying battery level and signal strength. 12internal or external antenna. 13low power design. Connecting to outer power supply or using backup batteries. Intelligent power management. Detecting the batteries to recharge or discharge automatically. 14support lock between sim card and p