corded telephone manufacturer wired telephone manufacturer Line Tester Analog Telephone

corded telephone manufacturer wired telephone manufacturer Line Tester Analog Telephone Line Tester: Portable Wall Mountable Caller ID Analog Phone! Model: ECG-207 Features: Main functions: Portable wall mountable caller ID volume switch. 1. FSK/DTMF dual system selectable. 2. 12 digits LCD screen. 50 groups incoming call recordes and 15 groups outgoing call records check. 3. Real date and time display. 4. 16 ringtones selectable & ringer volume adjustment: ringer 4 steps and hands-free. 5. Flash time 100/300/600/900ms/1000ms selectable. 6. 3 groups alarming clock with different ringtone. 7. Functions keys: Redial, Flash, Set, Up. 8. Superstrong lightning protection and anti-electromagnetic interference. 9. EAST LINE Phone can work without batteries. 10. Accessories: each gift box including 1 pc X handset, 1 pc X tel line, 1 pc X user manual etc.. EAST LINE is the China OEM Telephone Manufacturer / Factory.