Glossary Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business. Show only animated 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z G_Port G.992.1 or G.DMT ADSL G.992.2 or G.Lite ADSL G.fast Gateway Gbit/s or Gb/s or Gbps GBR GCC GEM General Communication Channel (GCC) Generalized Multiprotocol Label Switching (GMPLS) Generic Framing Procedure (GFP) Geographic Information System (GIS) GFP GFP-F GFP-T Giants Gigabit Ethernet (GigE) Gigabyte (GB) GigE GIS GMPLS GoB GPIB GPON Graded-Index Fiber Group Address GSCN GSM GUI