Advanced Communication System Model 99 Telephone Line Coupler

This compact unit is designed for broadcast engineers to hold the telephone line. The unit features two RJ-11 modular jacks, on/off toggle switch and a red LED indicator light. Requires no battery. Has "mini rubber feet" to allow for vertical stacking of multiple units, making it great for distribution. Easy to use: Plug telephone line directly into one of the RJ-11 modular jacks of unit. Then plug the telephone into the other RJ-11 modular jack. Make call and when answered, turn toggle switch on the "On" position. Hang up phone and line is held. To avoid possible interference, operator may choose to disconnect telephone.