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V85 Desktop VoIP Phone User Guide 47
YML772 Rev1
Appendix E: Summary of Key Features and Hardware
VoIP Standards Compliance
• Session Initiation Protocol (SIP, RFC 3261)
• Session Description Protocol (SDP, RFC 2327)
• Transport Protocol for Real-Time Applications (RTP, RFC 1889)
• User account authentication using MD5
• Out-band DTMF relay: RFC 2833 and SIP Info
Supports most frequently-used voice codecs:
• G.723.1, G.729A/B, G.711 (A-law/U-law)
NAT/Firewall traversal:
• Can make and receive calls through any type of NAT device
• NAT/Firewall traversal mechanism: STUN, Port Forwarding and Outbound Proxy server
Advanced Digital Signal Processing (DSP) technology to ensure superior audio
quality:
• Hardware DSP processor ensures excellent voice quality.
LAN port supports various connection types:
• Dynamic IP, Fixed IP and PPPoE;
• Auto-reconnect restores lost PPPoE connection.
Supports supplementary call services:*
• Call forwarding: immediate (unconditional), on busy, no answer
• Call hold
• Call transferring
Provides call history, Phone Book and Speed Dial features:
• Records incoming and outgoing call history, missed/not accepted call history
• Enables calls direct from call history.
• 50 Phone book entries and 10 speed dial
Easily configurable via keypad or Web browser.
Remote firmware upgrade capability (via ftp)
Keypad ping function supported
• Easily verify V85 Internet connection using Ping utility from keypad.
System status display on the LCD panel
• Easy to diagnose if the V85 is working normally and monitor the system status (network
status, registering status) from the LCD panel display.
• “PKT Trace” function is provided to display data packets received on the LCD panel to
enable administrator diagnose network issues on the line.
Supports call establishment via SIP proxy server and direct Peer-to-Peer calls