An electrical jack cable assembly includes a jack cable connector and an adaptor coupling for attaching the connector to a support. The adaptor coupling has a face plate and a tray that extends to a rear wall. The connector body is retained in the tray behind the abutment wall so that the rear wall resists any movement of the connector body with respect to the adaptor coupling in the plug-in direction. The jack cable assembly is made by providing a jack cable connector providing an adaptor coupling having a tray that extends rearwardly to a rear wall and assembling the connector body to the tray by slanting the connector body and inserting the slanted connector body into the tray until it passes over the rear wall of the tray. The rear end of the connector body is then pushed down for retaining the connector body firmly and positively in the tray.