电信专业英英词典G-3（在线收听）

　　补充：

　　Gateway - A system that translates incompatible networks or applications. Gateway is also commonly used to refer to any system that provides access to another system.

　　GMSS - General Manager, Sales and Service. This TDS Telecom employee is in charge of daily operations at our local offices.

　　Gopher - A system of clients and servers, in menu format, that allows for navigation on the Internet.

　　GOSIP

　　Government Open Systems Interconnection Profile

　　Grade Of Service (GOS)

　　GOS is an estimate of customer satisfaction with a particular aspect of service such as noise, echo or blocking. For example the noise grade of service is said to be 95% if, for a specified distribution of noise, 95% of the people judge the service to be good or better. In traffic networks, GOS defines the percentage of calls that receive no service (blocking) or poor service (long delays). GOS measures apply to all aspects of telecommunications networks. In many cases the literature equates GOS only with the probability of a blocked call. When used without further explanation, GOS generally refers to blocking probability.

　　Ground Start

　　Ground start is a supervisory signal given at certain coin telephones and PBXs by connecting one side of the line to ground.

　　Guided Media

　　Guided media is media that constrain electromagnetic or acoustic waves within boundaries established by their physical construction. Examples include paired metallic wire cable, coaxial cable, and fiber optic cable.