The term “Cable Telephone 20 pair PER Mtr” refers to a type of telephone cable used for telecommunications purposes. Here’s what each part of the term typically signifies:

1. Cable Telephone: This indicates it’s a cable specifically designed for telephone communication. Telephone cables are used to carry voice signals over short to medium distances.
2. 20 pair: Specifies the number of pairs of wires within the cable. In this case, there are 20 pairs of wires twisted together inside the cable. Each pair consists of two insulated copper wires twisted together, which is a common configuration for telephone cables.
3. PER Mtr: Indicates that the cable is sold by the meter. “Per meter” means you can purchase the cable in increments of meters, depending on your specific needs. For example, if you need 10 meters of cable, you would purchase 10 units (assuming the unit price is per meter).

Therefore, “Cable Telephone 20 pair PER Mtr” describes a telephone cable with 20 pairs of twisted copper wires inside, and it’s available for purchase by the meter. These cables are used primarily in telecommunications infrastructure to connect telephone lines within buildings, offices, and sometimes over short distances outdoors. They provide reliable communication channels for analog or digital telephone systems.