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The Avaya G700 Media Gateway, with an Avaya S8300 Media Server or S8700 Media Server, is part of the Avaya family of IP solutions designed to deliver data, voice, fax, and messaging over IP networks for businesses and organizations with 10 to 450 stations. The G700 provides a standards-based, IP communications infrastructure; it can be integrated within a variety of network configurations and provides an exceptionally cost effective, highly reliable, scalable means of integrating voice and data networks. The G700 provides the highest reliability in critical applications and unified system management.
The G700 Media Gateway with a media server joins the power of Avaya MultiVantageTM, based on the DEFINITY� feature set, with the power of distributed switching from the Avaya P330 line. With an Avaya S8300 Media Server or S8700 Media Server, it provides IP PBX functionality using open standards (H.323 and H.248) and an open operating system (Linux). This solution is scalable, modular, and able to support a variety of distributed configurations. It also supports stackable, hot swappable redundant architectures.
As a Voice over IP (VoIP) system, the G700 Media Gateway with a media server acts as an IP PBX, a messaging server, an interface between a LAN or WAN network and a wide variety of switched voice networks, and a management resource for conferencing, tone detection and generation, messaging, call classification, audio transcoding, and other telephony functions.
A single G700 Media Gateway with a media server can support dozens of IP telephones and IP softphones and a number of circuit switched entities. Additional G700s can be added as needed. Systems of up to 450 lines can be controlled by an S8300 Media Server residing within a G700. An external server, such as the Avaya S8700 Media Server, provides control for larger networks incorporating G700s.
The G700 moves voice data from the traditional circuit switched telephone world to the converged packetized Voice over IP world. This takes places in two steps. First, voice travelling over conventional circuits (analog trunk, analog T/R, T1/E1, or DCP) is transferred to a Time Division Multiplexing (TDM) bus similar to the traditional DEFINITY� TDM bus. This step is performed by the G700 media modules. Second, if the signal goes to an IP endpoint, or to DCP or analog endpoints in another G700, the voice signal on the TDM bus is converted into compressed or uncompressed IP packets. The second step is accomplished by the G700 VoIP engine.
The G700 contains a VoIP engine, a Layer 2 switch, modular interface connectivity for traditional trunk and station access, and resources for performing network gateway tasks. The G700 also contains a Digital Signal Processing (DSP) resource used for providing LAN audio services, such as conferencing, tones, and announcements. The G700 supports several media modules that can be installed in the four G700 media module slots. The media modules provide connectivity options to the G700, as well as application level options such as redundancy, control, and messaging. They allow for traditional interfacing of service provider network access solutions such as T1/E1, Loop Start/Ground Start Trunks, as well as connections to TDM based endpoints such as DCP digital phones, analog phones, and tip/ring devices. Media modules can be mixed and matched inside G700s and are hot-swappable and field-replaceable.
The S8300 Media Server seamlessly integrates traditional circuit switched interfaces (analog stations, analog trunks, FAX, multifunction digital stations, E1/T1 trunking, ISDN-PRI, etc.) and IP switched interfaces (IP telephones, IP trunking, H.323/H.248 compliant endpoints/gateways/MCUs). This seamless integration allows the user to evolve easily from the current circuit switched telephony infrastructures to next generation IP infrastructures without changing current equipment.
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