Features
Following features are supported.
Protocols
•SIP RFC 3261 Compliance
•STUN and IP sharing support for NAT
•RTP and RTCP
•DTMF Tx/Rx support using SIP INFO or Out of Band as per RFC 2833.
•Fax Support using T.38 Fax Relay and Fax Passthrough
•NTP to keep device time in synchronization
•DNS/SRV RFC 3263 compliance
Features
•DTMF generation and detection
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•Caller ID Detection and Generation
•Custom Caller ID Configuration
•Detection and generation of
•Polarity Reversal Generation
Call Features
•Consultation Call Hold
•Attended and Unattended Call Transfer
•Call Forward (Always, on Busy, on No Answer)
•Call Waiting
•Hot line and Warm line
•ACR
•Hunt Group
•Speed Dial (System wide and per port)
•Phone Book (System wide and per port)
Audio Features
•G.729ab — G.729a with VAD and CNG support
•G.711
•G.711 Annex 2. Support for VAD and CNG
•G.723.1 with 5.3 and 6.3 Kbps rates
Voice Quality
•IP layer TOS
•Dynamic/Adaptive Jitter Buffer algorithm
•Packet loss concealment (PLC)
•Echo Cancellation (G.168)
•Gain/Attenuation settings
Miscellaneous
•Forced Call disconnection from WEB/CLI/by dialing in key sequence
•Upgrade History, Call History, Port Statistics Display
•HTTP/TFTP software upgrade
•Configuration Backup and Restore.
•Syslog Support
•Restore to Factory Default