- Complies with the United States Federal Communication Comission's standards for RJ11 (1-line) and RJ14 (2-line) configuration for modular telephones
- This is designed for users who wish to add a jack to another area of their home or office
- Requires connection and linkage to another live jack (see ATT 16337 for connective wire)
- Easy to install with very easy-to-follow instructions