Telephone cable of 10, 20, 50, 100 and 300 pairs, gelatin filled, for indoor use.
We are happy to answer any questions, please send us your inquiries and orders.
product detail
Photos
Parameters
| product name | multi-pair indoor telephone cable |
| Transmission standards | YD / T838.4-2003 |
| Jacket | PVC / LSZH |
| Driver's equipment | Bare copper |
| OD conductor | 0,4 mm / 0,5 mm / 0,6 mm |
| Armored | Aluminum tape |
| Insulation material | PHYSICAL EDUCATION |
| Jacket color | Black gray |
| Sample status | A stock |
| Core number | 200 |
| If you provide a free sample | YEAH |
| Package | Wooden or custom reel |
More information
Product Introduction
This overhead plant consists of several insulated twisted pairs of copper wire or uninsulated pairs of wire (quads) mounted on crossarms along utility poles. The pairs are spaced to minimize crosstalk and signal interference. They typically terminate at distribution points or subscriber premises, providing traditional telephone service over open cabling.
Features
Exposure to the elements: Fully exposed to environmental elements such as ice, wind, and lightning, which can cause physical disruptions or signal interruptions.
Susceptibility to noise: Prone to electromagnetic interference from nearby power lines or radio transmitters, which degrades voice quality if shielding is insufficient.
Signal attenuation: Experience greater signal loss over long distances due to capacitance between tightly packed pairs, often requiring loading coils.
Maintenance requirements: Requires regular inspection to detect moisture ingress, damage caused by animals (e.g. squirrels) or deterioration of insulation to maintain reliability.
Applications
They are installed on poles in urban areas to connect neighborhoods to the main telecommunications network. They serve as distribution cables that carry multiple voice and DSL lines from exchange points to the pedestals, enabling last-mile connectivity for residential customers and small businesses.