This section covers our Cat3 and telco-grade copper cables for voice, T1, key systems, and legacy low-speed data. You’ll find flat satin RJ11/RJ12 cords for station wiring plus 25-pair telco riser cables with 50-pin and 64-pin connectors—many proudly made in the USA.
See the “Abbreviations” chart at the bottom of the page for definitions and decoding.
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| Term | Meaning | What It Indicates |
|---|---|---|
| Cat3 | Category 3 | Voice / low-bandwidth cable for POTS, PBX, and 10BASE-T. |
| T1 | T1 circuit cable | Shielded pair construction tuned for 1.544 Mb/s T1 services. |
| CMR | Communications Riser | Riser-rated jacket for vertical shafts and floor-to-floor runs. |
| RJ11 / RJ12 | 6-position modular plug | Flat satin cords for phones; RJ11 = 2–4 wires, RJ12 = 6 wires. |
| 50-Pin / 64-Pin | Telco “Amphenol” connectors | Multi-pair connectors used to land 25-pair (50-pin) or higher-pair trunks. |
| Male / Female | Connector gender | Determines whether it mates with a panel jack (female) or plug (male). |
| Blunt | Cut cable end | Opposite end is unterminated for hard wiring into blocks or frames. |
| Shielded | Foil or braid shield | Improved noise immunity for T1 and sensitive voice/data circuits. |