VoIP Phone Unicorn4102 supports Two lines with phonebook,BLF..etc rich functions, and competitive price for Enterprise users.It is an affordable, easy to use VoIP solution for the home or SoHo office

Display:
Back light LCD screen
- 80X39mm
- 4 lines X 16 characters
Caller ID
Date and Time Display

Specifications:
Adapter Input:100-240VAC 50-60Hz
Adapter Output: 9VDC 600mA
WAN: 1 x RJ45 100Base-T
LAN: 1 x RJ45 100Base-T
L x W x H: 230x190x55mm
Weight: 1.08 Kg

Phone Functions:
Message Wait Indicator
SIP Registration (2 BLF keys)
Two Ethernet ports (10/100)
Call History
Phone Book (XML100 Entries)
Full Duplex Speakerphone

Call Features:
Call Redial
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

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

Phone Buttons/Keys:
Five navigation/menu/volume keys,  
13   dedicated   function   keys    for: Hold, Speakerphone, Send/Redial,Mute,Transfer, Conference and Message (with message  indicator),  Line  1,  Line  2, DND, Play, Phone Book, Answer.

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