A “telephone line cord double line” typically refers to a telephone cable designed to support two separate telephone lines, commonly used for connecting devices like dual-line phones, fax machines, or modems. These cords are often terminated with RJ11 or RJ14 connectors and are available in various configurations to suit different needs.
🔧 Key Specifications of Double Line Telephone Cords
1. Connector Types
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RJ11: Standard for single-line telephones; supports up to 2 conductors.
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RJ14: Used for two-line telephones; supports up to 4 conductors.
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RJ25: Supports three lines; less common.
2. Conductor Count
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2 Conductors: Suitable for single-line applications.
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4 Conductors: Required for dual-line applications, allowing simultaneous use of two telephone lines.
3. Cable Construction
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Conductors: Typically made of copper for good conductivity.
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Insulation: PVC or PE insulation to prevent short circuits and reduce interference.
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Sheathing: Flame-retardant PVC sheathing for safety.
4. Length
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Available in various lengths, commonly ranging from 1.8 meters (6 feet) to 15 meters (50 feet), depending on the distance between devices.
5. Wiring Configuration
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Straight-through (Standard): Each pin on one end corresponds directly to the same pin on the other end.
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Reverse-wired: Pins are crossed between ends, used for specific applications like connecting to a wall jack.
🛠️ Examples of Double Line Telephone Cords
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KEBILSHOP 90 Meter 2 Core Telephone Line Cord Wire Roll
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Includes a 90-meter wire roll, 30 RJ11 2C modular plugs, and a 3-in-1 modular crimping tool.
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Ideal for custom-length cable creation.
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Havells 2-Pair Telephone Cable
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Features flame-retardant high-grade insulation and tinned copper conductors.
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Complies with TEC Specification No. G/WIR-06/03.
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Finolex 0.5mm 2-Pair PVC Unarmoured Telephone Cable
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Made of high-density polyethylene insulation with a nylon rip cord.
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Suitable for indoor telephone wiring and intercoms.
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