GG45 is a trademarked name for a plug and socket ( connector also ) existing plug-in system of category 7 (or 7A ) for LAN cabling of data communications systems ( such as Ethernet in a Cat - 7 data network). GG45 is specified for higher data rates than those of the RJ45 connector. The available in 2008 version of GG45 supports a bandwidth of 1000 MHz on the network, current systems with RJ45 connectors Category 6A allow a bandwidth of currently more than 500 MHz.


The GG45 system was developed by Nexans, the company also received the rights for the GG45. GG was used as an abbreviation for GigaGate, but this name could not be protected so that the GG45 is protected only as a brand name. The addition of 45 to illustrate the backward compatibility to RJ45. The GG45 cabling system was standardized in 2002 as IEC 60603-7 -7 and then elected to ISO 11801 as a global cabling standard for Category 7 / Class F cabling. The GG45 meets the standard factory specifications of the class -FA -4 -connector channel when using the GG45 patch cable.

Design and usability

Today GG45 is a 2-in -1 solution, since the GG45 jack (not the plug! ) Is to RJ45 backward compatible. Thus can be used conventional RJ45 connector into new GG45 environments ( network sockets, patch panels). Conversely, it is not possible to use the GG45 plug into an RJ45 jack. In the backward-compatible mode, the plug-in connection, however, does not reach its full power, but "only" a bandwidth of 500 MHz corresponding category 6A. The weakest link is then in such a chain, the Cat 6A patch cords and thus determines the overall performance.

In addition to the eight contacts of the RJ45 system, the GG45 jack has in the upper outer corners of the RJ45 plug face four other contacts. The middle 4 RJ45 contacts are only in operation with an RJ45. At frequencies up to 500 MHz on the RJ45 contacts, it comes here through the lower contacts not to or interference with the signal. The additional contact pairs above right and left provide by category 7 the higher bandwidth of 600 MHz and in the new version by Category 7a of 1000 MHz. It can transmit over a distance of 100 m, according to the developer 40 Gigabit / s.

There are, however, not used all twelve contacts simultaneously, since data cable according to standard have only 8 wires. Instead, a spring mechanism separates the middle RJ45 contacts and relocated them to the chassis ground. This is from Cat 7 operating only the outer contacts (1 /2 and 7/8) of the RJ45 bar and the additional upper 2 GG45 contact pairs in use. Due to the larger distance, the now have all of the pairs to each other, a transmission bandwidth of up to 1000 MHz is possible. The Category 7 and Class F ( ISO/IEC/11801: 2002 ) are then supported with large power reserve. For the change to category 7 and above have GG45 plug an additional nose at the front. The plug and the socket have a cross-shaped shield at the center; thereby to each other is ensured a consistent screening of the four wire pairs.

Meanwhile, Nexans has a cooperation agreement with the American manufacturer Bel Stewart, the leader in data connector and Print modules for PCB mounting is. This has developed independently of the development of Nexans GG45 a category -7 -enabled print version under the name ARJ45, which is fully compatible with the GG45 system. Nexans has its own print jack ( GG45 8C) developed, which is the category 7A surpass the manufacturer's instructions and covers a range up to 1400 MHz. Thus, there is the possibility that in the future the GG45 Standard can enforce as Kategorie-7/-7A-System as manufacturers of active components can fall back to the development of devices with higher transmission speeds on these print jacks.