Abstract: An improved gel-protected registered telephone jack includes a cavity in a housing, and a rear opening to the cavity that permits positioning an insert that connects permanent telephone wires to spring connectors. A front opening receives a plug to make contact between wires in the plug and the spring connectors, and a gel on the spring connectors prevents corrosion of the connectors. Guides for the insert are mounted lower in the rear opening than is conventional and the housing adjacent the rear opening extends rearwardly more than is conventional, so the positioned insert is lower and more rearward than is conventional. A retainer binds the insert to the housing and thereby limits fore-and-aft translational movement of the insert within the cavity.