1. Alliance Group Services Inc. 1221 Post Rd E Ste 301, Westport, CT 06880 Coordinate: 41.13935,-73.32222 Phone: (203) 221-8700
2. Sigmavoip 980 Post Rd E, Westport, CT 06880 Coordinate: 41.13821,-73.33105 Phone: (203) 541-5450