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Chapter 1 Introduction
The VoIP ATA provides easy way to make a free call via internet. User can set it as PPPoE client, Static IP or
DHCP client to connect to the internet. The device is fully complaint with SIP v1/v2 standard so you need to
register a SIP account or number to make the phone call to your friends.
1.1 Overview
The VoIP ATA is optimized to suitable for the growing demand of VoIP application, and it does so as a single,
highly-integrated and cost-effective solution. The NAT function let user can easy to set the device to link to the
internet and configure the VoIP setting to enjoy the call free via internet.
Note: We offer free SIP account number for our VoIP device at the beginning, but we only guarantee 1
year to let user to use the free SIP account number. User can find lots free SIP server from the internet or
service provider, so please choose the best way to register the SIP server. We only provide the free SIP
account for the default testing and you can use it only 1 year.
1.2 Features
Key features
‧STUN ( Simple Travel of UDP over NAT)
‧Dynamic DNS
‧DMZ & VLAN Function
‧DHCP (dynamic host configuration protocol) server and client
‧NAT (network address translation)
VoIP Features
‧Voice codec
G.711:64k bit/s (PCM)
G.723.1: 6.3k / 5.3k bit/s
G.726: 16k / 24k / 32k / 40k bit/s (ADPCM)
G.729A : 8k bit/s (CS-ACELP)
G.729B : adds AD & CNG to G.729
‧Voice Quality
VAD( Voice activity detection),
CNG ( Comfortable noise generator)
LEC (Line echo canceller)
Packet Loss Compensation
Adaptive Jitter Buffer
‧Call Function
Call Hold
Call Waiting
Call Forward
Caller ID
3-Way Conferencing
‧DTMF Function
3
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