V7122 Gateway User Guide
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C
HAPTER
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O
VERVIEW
This document provides you with the information on installation, configuration and operation
of the V7122 SIP gateway, TP-1610 SIP cPCI board and TP-260 SIP PCI board. As these
products have similar functionality (with the exception of their physical layout and the number
of trunks), they are collectively referred to throughout this guide (except in hardware-related
sections) as the gateway.
V7122 Overview
The V7122 SIP Voice over IP (VoIP) gateway enables voice, fax, and data traffic to be sent
over the same IP network. The gateway provides excellent voice quality and optimized
packet voice streaming over IP networks.
The gateway uses the award-winning, field-proven Digital Signal Processing (DSP) voice
compression technology used in other TrunkPack
TM
series products.
The gateway incorporates 1, 2, 4, 8 or 16 E1 or T1 spans for connection, directly to Public
Switched Telephone Network (PSTN) / Private Branch Exchange (PBX) telephony trunks,
and includes one or two 10/100 Base-TX Ethernet ports for connection to the network.
The gateway
supports up to 480 simultaneous VoIP or Fax over IP (FoIP) calls, supporting
various Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI) protocols
such as EuroISDN, North American NI2, Lucent™ 4/5ESS, and others. In addition, it
supports different variants of Channel Associated Signaling (CAS) protocols for E1 and T1
spans, including MFC R2, E&M immediate start, E&M delay dial/start, loop start and ground
start.
The gateway, best suited for large and medium-sized VoIP applications, is a compact device,
comprising a 19-inch 1U chassis with optional dual AC or single DC power supplies.
The deployment architecture can include several gateways in branch or departmental offices,
connected to local PBXs. Call routing is performed by the gateways themselves or by SIP
Proxy(s).
The gateway enables users to make low cost long distance or international telephone/fax
calls between distributed company offices, using their existing telephones/fax. These calls
are routed over the existing network ensuring that voice traffic uses minimum bandwidth.
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