A coupling is provided for joining the ends of relatively soft plastic conduit. In one embodiment, a base station determines a target access terminal’s use of service so far in a billing period, wherein the target access terminal is located in a sector of the wireless communication network. The dummy TIA, however, is subject to the same processing and temperature variations as the other TIAs, and, as a result, the voltage on the dummy TIA inverting input will be the same or substantially the same as that of the other TIAs. The DRAM capacitor also contains a dielectric material that partially covers the interior vertical sidewalls of the isolation trench. Furthermore, weight values may be used to further define the combination in the desired color gamut mapping strategy.