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3.3 -
Display
The V-IP400P features a backlit LCD (blue). When in standby (and with no active
alarms) the LCD would normally display time and telephone’s name. New events (e.g.
incoming calls) or errors (e.g. undetected DHCP) are promptly displayed on the LCD.
3.4 -
Main Functionalities
The V-IP400P features all the functions of a traditional phone. In addition, when used in
conjunction with a VOIspeed PBX, more advanced functionalities are available:
•
Network protocols: TCP/UDP/IP, HTTP, DHCP Client, FTP/TFTP, DNS, ARP, ICMP
•
Power Over Ethernet: 802.3af (Mode B)
•
Switch (DHCP or static IP) over two 10/100Base T RJ-45 ports
•
Standard Encryption and authentication (DIGEST using MD5)
•
Firmware upgrading via TFTP/FTP and HTTP
•
Syslog: the phone can send events with debugging information to a syslog server with
increased level of detail
•
VoIP protocols: SIP (RFC3261 e RFC2543)
•
SDP (RFC2337)
•
Voice Codec: G.711 (A-law/U-law), G.729, G.723-r63 e G.723-r53
•
Jitter Buffer
•
DTMF standard: relay, RFC2833 and SIP info
•
G.168 echo cancellation
•
Voice Activity Detection (VAD)
•
QoS supporting TOS / DiffServ
•
Outbound proxy for NAT Transversal
•
Caller ID
•
Call on hold
•
Call forwarding (blind/attended)
•
Do not disturb