Fixed Wireless Phone Basic Functions 1. Supporting GSM 850/900/1800/1900MHz. 2. Making local calls, mobile calls, national and international calls. 3. Displaying current time, talk time, battery status, signal intensity, etc. 4. Supporting redial, hand free, and call back function. 5. 10 groups of missed calls, received call and dialed call. History records could be kept or deleted. 6. LCD displays incoming and outgoing numbers. 7. 11 kinds with 8 chord rings for selection. 8. With SIM lock, network lock and cell lock function. 9.One base unit can support up 4 handsets. 10.SMS Optional Handset function: 1. 2.4 G digital wireless phone. 2.Full duplex talkback for both handset to handset and handset to base unit. Call Forward function. 3.Adapting jumping frequency technology with good confidentiality. 4.100 group of incoming calls memory which could be reviewed or deleted. 5.10 groups of outgoing calls memory which could be reviewed or deleted. 6.Phone book can store 100 groups of phone number. 7.Low voltage alarm indicator. 8.Talk time calculation. 9.Alarm clock setting. 10.LCD backlight contrast can be adjustable. 11.18 kinds of 32 chord ring for selection with volume setting. 12.Time setting. 13.24 bit digital codes redial. 14.Talk free for both Handset to handset and handset to base unit 15.Using industrial module