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1. Introduction
Product Overview
The stand-alone Nateks Networks VoiceCom90 SIP Router carries both voice and facsimile
over the IP network. It supports SIP industry standard call control protocol to be compatible
with free registration services or VoIP service providers’ systems. It works in two different
modes: UA (User Agent) or Server. As a standard user agent, it is compatible to all
well-known Soft Switches and SIP proxy servers.
There are 5 models of VoiceCom90 in the same series: VC-91-2, VC-91-1, VC-92-3, VC-92-2,
and VC-92-1. VoiceCom90 can be seamlessly integrated to existing network by connecting to
a phone set, fax machine or PSTN line. With only a broadband connection such as ADSL
bridge/router, Cable Modem or leased line router, it allows you to gain access to voice and
FAX services over the IP in order to get the convenient of VoIP and reduce the cost of
international and long distance calls.
In addition, the in-built router supports comprehensive Internet gateway functions to
accommodate other PCs or IP devices to share the same broadband stream. QoS function
allows voice and data traffic to flow through where voice traffic is transmitted in the highest
priority. With TOS bit enabled, it guarantees voice packets to have first priority to pass
through a TOS enabled router.
With the support of DDNS, it makes VoiceCom90 reachable by its domain name where the
ISP dynamically assigns the IP address.
VoiceCom90 can be assigned with a fixed IP address or by DHCP, PPPoE. It adopts the G.711,
G.729A or G.723.1 voice compression format to save the network bandwidth while providing
real-time and toll quality voice. In addition, in the event that the power supply fails or Internet
connection is lost, VoiceCom90 can automatically divert the FXS end to the PSTN network on
the PSTN port so users can still use the conventional PSTN line to make calls. This feature is
especially useful while dialing emergency calls (i.e. 911).