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Chapter 1
Overview
SMG-400 Features
The SMG-400 system has the following major features.
PSTN Interfaces
The SMG-400 system provides the following PSTN interfaces for interoperability with PBX
(Private Branch eXchange) or KTS (Key Telephone System).
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LOOP Analog Trunk Interface
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SLC Analog Interface
VoIP Interfaces
VoIP is a technology that enables simultaneous transmission of both voice and data over the
Internet, and enables Internet telephony service. The SMG-400 system offers the following VoIP
interfaces.
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H.323-V3 VoIP Interface
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Gatekeeper Interface (RAS)
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Real Time Internet Fax Support (FoIP)
Trunk Routing Functions
The SMG-400 system offers the following trunk functions including trunk routing, trunk tandem,
and access code control.
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Trunk Routing
y
LCR (Lease Cost Routing) code and route control
y
Dynamic rerouting depending on the traffic load of PSTN and Internet Protocol state
y
Routing Table
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Trunk Tandem
y
Various PSTN and VoIP trunks connection
y
Interoperability among analog trunk, digital station, and VoIP network
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Access Code Control
y
IP address translation based on access code and prefix number