mating plug thereby allowing insertion of the mating plug. When the second plug is inserted into the plug-receiving cavity, the second plug is stopped by the blocking tabs, thereby preventing insertion of the second plug.
Additionally, a modular jack is provided for receiving an RJ-45 plug and blocking an RJ-11 plug from insertion into the modular jack. The modular jack comprises a housing having a plug-receiving cavity and terminals mounted in the housing that project into the plug-receiving cavity. Deflection members are provided on each side of the plug-receiving cavity. Each deflection member has a retention section and a ramp surface arcuately joined. A blocking tab extends transversely from an end of the ramp surface. The retention sections are held in slots of the housing such that the rampsurfaces extend toward the plug-receiving cavity and the blocking tabs are opposed and extend inwardly toward the plug-receiving cavity. The ramp surfaces are disposed such that when the RJ-45 plug is inserted into the plug-receiving cavity, a leading edge of the RJ-45 plug deflects the ramp surface and the blocking tab away from the plug-receiving cavity. Upon insertion of the RJ-11 plug, a leading edge of the RJ-11 plug strikes the blocking tab, thereby preventing insertion thereof.