Start studying Heterozygous, homozygous, dominant, recessive. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
About Us. Core Communications, Inc. (CoreTel) is a Competitive Local Exchange Carrier (CLEC) based in the Mid-Atlantic, United States, with a focus on bridging the gap between Carriers/Internet Service Providers (ISPs) and their end users. Today, CoreTel's business model is aimed at growth and profitability.
Also known as an IP PBX, Unified Communications System or business phone system, a PBX acts as the central switching system for phone calls within a business.PBX systems handle internal traffic between stations and act as the gatekeeper to the outside world.lso known as an IP PBX, Unified Communications System or business phone system, a PBX acts as the central switching system for phone calls within a business.