Detailed Product Description

Specifications:
Adapter Input:100-240VAC 50-60Hz
Adapter Output: 5VDC 1200mA
WAN: 1 x RJ45 100Base-T
LAN: 1 x RJ45 100Base-T
FXS:4 x RJ11
FXO:4 x RJ11
L x W x H: 175x125x30mm
Weight: 1.2 Kg

Call Features:
Call Block (DND) Call Hold, Call Transfer
Call Forward, Call Waiting
Three parties Conference

Tones:
Ring tone, Ring back tone
Dial tone, Busy tone

DTMF Function:
In-Band, In-Audio, RFC2833

Voice Quality:
Silence Suppression
VAD: Voice activity detection    CNG: Comfortable noise generator
AEC: Acoustic echo canceler   G.168: Network echo canceler Jitter Buffer

Codec:
G.723.1
G.726
G.729A G.729B
G.711 (a-law/u-law)

Nat Traversal:
STUN
Media Relay
Automatic NAT Traversal
UPNP

QOS:
802.1Q VLAN, 802.1P TOS, DiffServ

IP Assignment:
PPPoE, DHCP, Static IP

Network Protocol:
SIP Version 2 (RFC3261) TCP/UDP/IP RTP/RTCP ICMP,
ARP/RARP DNS, DHCP, NTP, PPPoE STUN, UPNP

Security
HTTP Basic/Digest authentication
MD5    for    SIP    Authentication (RFC 2069/RFC2617) ip gateway