1. Loop: 5 2. Telephone sets should be TONE dialing only. 3. CO Dialing Tone - continuous Internal Dialing Tone - continuous (450 Hz) Internal Ring Back Tone - 1 sec. ON, 4 sec. OFF (450 Hz) Internal Busy Tone - 0.35 sec. ON, 0.35 sec. OFF (450 Hz) Internal Confirm Tone - 1 sec. ON (450 Hz) 4. Power : 120V / 220V
PBX, PABX, telephone system.
Networking accessories, cable, fiber optic, inline coupler, isdn, keystone jack, lan active, patch panel, surface mount box, telecom, telphone accessories, face plate & accessories.
Usb cable, lan cables cat5 e, cat6 accessories, audio, video cables, wire harness, telephone cable & accessories, pcb assembly & plastic injection oem po.
Payphone.
