The Common Optical Port (COP-3) has been tested for proper operation with various branded Tri-vector meters manufactured by M/s. Secure Meters, L&T, Elster (previously ABB), Duke Arnics, Schlumberger, Genus, Data Pro, Saame (China) etc., The single optical head, multi adaptor arrangement will facilitate a low cost, Universal Solution for meter reading through CMRI, GSM / GPRS, CDMA, PSTN Modems for AMR applications.