Karel NT321 Technical Reference And User's Manual - page 10
NT32I Technical Reference and User Guide
2
Specifications of NT32I
Codecs
• G.711A
• G.711U
• G.723
• G.726 16 Kbps
• G.726 24 Kbps
• G.726 32 Kbps
• G.726 40 Kbps
• G.729
G.723 Ratio
• 5.3
Kbps
• 6.3
Kbps
LAN Protocols
• SIP
v2.0
• IP/TCP/UDP/RTP/RTCP/ICMP/ARP/RARP/SNTP
• TFTP
Server
• DHCP/DNS/SNTP
Client
• HTTP
Server
• Static/DHCP IP Assignment
• NAT
transversal
-
STUN - NAT
DTMF
• In-Band
• Out-of-Band
DTMF
(RFC2833)
• SIP
Info
Voice Quality
• VAD – Voice Activation Detection
• AGC – Automatic Gain Control
• AEC– Acoustic ECHO Cutter
• Jitter
Buffer
Tones
• Ring tones – 5 different ringtones
• Changeable and installable ringtones
• Warning tone on busy
Power
• 5 VDC adaptor
Phone Functions • Message and Call displayer
• Remote SIP registration – Ability to register to 3 different
registration servers. (Sequentially registration or
registration to selected registration server)
• Recorded user settings
• Call Records (128 records are kept for each of Missed,
incoming and outgoing. Last 32 call records are kept for
every extension.)
• Full duplex speaker
• 2 internal 10/100 Ethernet switch ports
• Speed Dial / 6 + 24 (with DSS module)
• Phonebook – 128 numbers
• Hour/Day/Week/Month/Year
basis 8 different periodical
alarm, alarm message or name definitions.