Edge-Core VP3302, Руководство пользователя

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VP3302 IP Phone User Manual
1.2 Key Features
•
Follows RFC-3261 SIP standard:
o
Supports password authentication using MD5 digest and RFC-2833 for
DTMF relay.
• Dynamic IP support (DHCP and PPPoE):
o
Gets IP from DHCP server using DHCP protocol or through ADSL
modem using PPPoE protocol, and automatically reconnects when
PPPoE loses connection.
•
Passing through NAT devices:
o
Can make outgoing and incoming calls under any NAT device (even
under two layer NAT devices) when working with the specific
gatekeeper/proxy devices.
•
Remote software upgrade capability (via ftp):
o
FTP protocol provides reliable remote upgrades through the Internet.
•
Advanced Digital Signal Processing (DSP) technology to ensure superior
audio quality:
o
Chip solution with built in DSP processor ensures perfect voice
quality.
•
Supports G.723.1, G.729A/B, G.711 (A-law/U-law) voice codecs:
o
Follows ITU-T standard to support best compatibility.
•
Supports supplementary services, including immediate (unconditional) call
forwarding, busy call forwarding, no answer call forwarding and call
hold/transfer.
•
Provides call history:
o
Records incoming call history, outgoing call history, missed (not
accepted) call history, and let users make direct calls from call history.
•
Phone Book: 50 sets
•
Speed dial: 10 sets
•
Supports Silence Suppression, VAD (Voice Activity Detection), and CNG
(Comfort Noise Generation):
o
Silence suppression can save about half of the network bandwidth
needed during normal VoIP conversation.
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