EGH focuses on the needs of the largest US telecommunications carriers. Our high-performance OSS products store, manage, and direct the flow of subscriber and service data for 100's of millions of telephone lines. If you live or work in US, chances are that yours is one of them. More than 30 years ago, EGH products were meeting the diverse operational, business, and regulatory requirements of Bell Operating Companies. Today EGH systems are supporting retail and wholesale PSTN, wireless, and IP-based services such as VoIP.