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Chapter 1 Product Introduction
1.1 Overview
GT48 VoIP gateway is a product based on the advanced MicroXchange architecture. It is a multiple purpose,
modular VoIP gateway. GT48 is designed for carriers and enterprises for regular phone service, fax service and
PBX service. It can be used as a part of the cost effective IP PBX solutions.
GT48 supports many VoIP standard protocols and voice codec. It provides effective solutions to many technical
challenges that include echo cancellation, firewall, and billing. Compared to other products on the market, GT48
has the advantage of carrier reliability, flexible configuration, high voice quality, excellent protocol compatibility,
and low cost. Its high efficient hardware and software design and powerful DSP processing power guarantee the
GT48 capability of full load voice and signaling processing and IP packetization. Its redundant load sharing power
supplies and hot swappable modules further secures the GT48’s reliability.
GT48 can provide up to 48 FXS/FXO ports. It is also equipped with multiple 10/100M Ethernet interfaces. GT48
connects to regular telephones, faxes and PBXs through the FXS/FXO analog interfaces. It connects to IP
network through Ethernet interfaces. GT48 provides real-time and high quality IP-based voice services.
1.2 Features
GT48 has the following features:
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Flexible Configuration
GT48 uses compact modular slot chassis design. Users can configure the GT48 with interface cards of different
types and capacities.
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Carrier Reliability and Serviceability
GT48 hardware is designed to reach the high MBTF (Mean Time Between Failure). To satisfy the carrier
reliability requirement for voice gateways, GT48 has the option of load sharing power module. Should one power
module fail to function, the other power module resumes the full power function. Every hardware module is hot
swappable for in-service maintenance.
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Support FTP file transfer and Telnet remote configuration
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Protocols and Voice Codec
GT48 supports MGCP
、
SIP
、
RTP
、
TFTP
、
HTTP
、
SNMP
、
DHCP
、
and STUN protocols. It also supports G.711
、
G.729A
、
G.723.1 codec, G.168 echo cancellation, RFC2833 DTMF relay, and T.38 fax relay.
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Supported Devices
GT48 supports analog telephones, faxes, and PBX devices.
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Interoperability