Circular Modular Telephone Jack were used by GTE and other regal Telephone Companies

Ivory telephone wall mount surface jack assembly w/Snap-on Cover for wall phones and more

Stainless Steel telephone wall mount surface jack assembly

Call it a "Biscuit", "Biscuit Block" or "Clamshells" it's a RJ12 Telephone Surface Jack

Call it a "Biscuit", "Biscuit Block" or "Clamshells" it's a RJ11 Telephone Surface Jack

RJ11W Designer Flush Mount Modular Telephone Jack Assembly - 4-Conductor

RJ11W Designer Flush Mount Modular Telephone Jack Assembly - 4-Conductor

RJ12W Designer Flush Mount Modular Telephone Jack Assembly - 6-Conductor

RJ12W Designer Flush Mount Modular Telephone Jack Assembly - 6-Conductor

RJ11W Designer Duplex Flush Mount Modular Telephone Jack Assembly - 4/4-Conductor

RJ12W Designer Duplex Flush Mount Modular Telephone Jack Assembly - 6/6-Conductor

RJ12W Designer Duplex Flush Mount Modular Telephone Jack Assembly - 6/6-Conductor

RJ45W Designer Duplex Flush Mount Modular Telephone Jack Assembly - 8/8P, 8/8C Conductor

Modem "T" Adapter is designed for analog phone lines, POTS (Plane old telephone serves) w/Telephone & Modem

Ivory telephone wall mount surface jack assembly w/Snap-on Cover for wall phones and more - plus FREE Wrench Gripper Organizer 2PC Set

Ivory telephone wall mount surface jack assembly w/Snap-on Cover for wall phones and more

Designed for analog phone lines, POTS (Plain old telephone service)

Elimination of radio frequency interference - AM broadcast station band

Designed for analog phone lines, POTS (Plain old telephone service)

Ivory telephone wall mount surface jack assembly w/Snap-on Cover for wall phones and more