For telephones, the standard connection is a Category 3, and of course to get the best results, you should get the V-Max RJ11 90° 6x6 Cat3 voice grade keystone jack. You can use RJ11 jacks in two-line telephone systems, 10BASE-T Ethernet, and ATM25 networking. A connection is made with 110-IDC contacts in their terminal block and 50 micro-inch gold plated nickel contacts that are attached to a FR-4 laminated, double-sided printed circuit board (PCB).
Unshielded, broadcasting data at 10 Mbit/s, and transmitting frequencies at 16 MHz, Cat 3 jacks can reach speeds of 100 Mbit/s if you use the 100BASE-T4 standard. UL approved with a 94V-0 rating and complying with TIA/EIA-568A/B cabling standards, RJ11 Cat 3 keystone jacks are widely used for the self-extinguishing flammability characteristics of FR-4 lamination. You can use keystone adaptable Ethernet set-up equipment to set up these Cat.3 jacks, they just snap on; easy.
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