7
when VoIP call was proceeded and it keep full speed access when there is no VoIP traffic.
•
DDNS (Dynamic Domain Name Server)
DDNS is a service that maps Internet domain names to IP addresses. It allows you to provide
Internet users with a domain name (instead of an IP Address) to access Virtual Servers.
•
NAT Traversal
The NAT traversal allows gateway to operate behind any NAT/Firewall device. There is no need to
change any configuration of NAT/Firewall like setting virtual server.
VoIP Features
•
H.323 / SIP dual mode communication
•
SIP 2.0 (RFC3261), H.323v4 compliant
•
Peer-to-Peer / H.323 GK / SIP proxy calls
•
PSTN lifeline support
•
Voice codec support: G.711(A-law /
μ
-law), G.729 AB, G.723 (6.3 Kbps / 5.3Kbps)
•
Voice processing: Voice Active Detection, DTMF detection, G.165/G.168 compliant echo canceller,
silence detection.
•
Built-in adaptive buffer that helps to smooth out the variations of delay (jitter) in voice traffic.
•
Voice channels status display: This function displays each port status such as on-hook, off-hook,
calling number, talk duration, codec.
GSM Features
•
SMS Server for SMS sending and receiving
•
Worldwide GSM network usable (850/900/1800/1900 MHz)
•
Supports GSM PIN code protection
Package Content
The contents of your product should contain the following items:
¾
Voice Gateway VIP-281GS unit
¾
Power
adapter
¾
GSM
Antenna
¾
Quick Installation Guide
¾
User’s Manual CD
¾
RJ-45 cable x 1