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GREEN-GO DIGITAL INTERCOM SYSTEM - Network bridges and switches Green-Go network bridges are used to make connections between two Green-Go intercom networks located on different sites, across the Internet or a private network, creating a single intercom group spread over the two sites or adding remote users. Green-Go Ethernet switches provide power over Ethernet (POE), and have additional features, such as locking Ethercon network connectors, making them more suitable for use in stage and similar environments than switches designed for use in a data centre.
Network Bridges Main points: Connect events globally via the Internet or a private network Two or four independent streams of bridge interface Connect to two or four remote sites No loss of speech clarity Pass 'Call' alert signalling between sites Group bridge and user access modes Compact desktop or 1U rackmount format Bridges have four Ethernet ports, two for internal and two for external networks. The internal ones are normally used for connecting to a Green-Go network local to the bridge unit. One of the internal network ports can be used for powering the bridge via POE. Alternatively, the bridge can be powered with an external power supply. The external ports are used for connecting to the Internet or a private network. The bridges should have fixed IP addresses assigned on External networks. These should be chosen from the same range of IP addresses as is used on the local network, but outside the range of any addresses offered by the router or a DHCP server. Care should be taken to avoid using an IP address that is already in use. UDP port forwarding should be set up in a firewall between the Internet or a private network and a bridge in one of the sites. Each bridge interface stream can be used in one of two modes, group bridge mode or user access mode.
Group bridge mode In group bridge mode, a bridge connects to another bridge via the Internet or a private network, using a single stream on each site. This creates a single intercom group spread over two sites. Once communication is established, audio and call signals will be transported from one Green-Go network to the other. The new common group for the two sites should perform like any other intercom group and there should be no loss of audio quality at either site, depending on prevailing conditions. A small degree of latency may be introduced by the Internet, again depending on prevailing conditions. For every connection in group bridge mode there is an 'active' and a 'passive' member. The 'active' member always connects to the 'passive' member. UDP port forwarding should be be set up in the firewall between the Internet or private network and the 'passive' bridge to allow the 'active' bridge to connect to the 'passive' bridge.
User access mode In user access mode, a Green-Go device, such as a wired beltpack, multichannel station, analogue partyline interface, wall panel or an iPhone with a Green-Go app, can connect to a bridge in a different location via the Internet or a private network. It then simply becomes another user in the Green-GO system. All the user has to do is enter the IP address of the bridge external connection - the public IP if via the Internet - a UDP port number and a password. In user access mode, the bridge is the 'Passive' member, therefore, UDP port forwarding should be set up in the firewall between the Internet or private network and the bridge.
GGO-Bridge Network Bridge Interface This has two virtual ports and provides two independent streams, which allows for two remote users or two bridges or one remote user and one bridge to be connected to it. This bridge has an LCD display and rotary encoder on the front panel, allowing all settings to be viewed, selected and modified. The rear has four RJ45 sockets, two for the internal Ethernet network and two for external Ethernet connections. Power can be provided by a POE switch via the second internal Ethernet connector or may be supplied by an external adapter via a co-axial inlet. Supplied in free-standing format. It may be mounted in a 19 inch rack using the optional 26-767 GGO-RMDT Rack Mounting brackets.
GGO-BridgeX Network Bridge Interface This has four virtual ports and provides four independent streams which allows for four remote users or four bridges or a combination of remote users and bridges, for example one remote user and three bridges to be connected. Built in a rack-mounting case, this