A system and method for quarantining IP service devices. The frame includes a support member that has a first end portion and a second end portion opposite the first end portion. As a result, volatility of reaction products produced upon etching the compound layer is enhanced, and micro-loading effects are suppressed. A balun can be used for each port to convert the balanced port to a single-ended port. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion 3\u2212 as at least one constituent for use as electrode material for alkali-ion rechargeable batteries. The transmitter and the receiver can be configured as portions of a fiber-optic connector assembly that can be used to connect two fiber-optic cables in an occluded environment.