VoIP Protocols
- Supports popular voice-coders including G.723, G.729AB and G.711 (A law and U-law), FAX and Modem pass-through
- Supports PSTN-Relay in case of power failure and external control
- SIP (RFC 3261~3266 and various SIP draft extensions)
- SDP(RFC2327)
- RTP/RTCP(RFC 3550, 3551)
Call Features
- Call Transfer (Attended)
- Call Forward (Busy / No Answer /Unconditional)
- Call Hold / Retrieve
- Call Waiting
- Caller ID Display
- Caller ID Blocking
- Anonymous Call Blocking
- Hook Flash
FAX Support
DTMF
- In-band DTMF
- Out-of-band DTMF(RFC 2833)
QoS
Dial Signal
- Pulse dialing 10/20 pps
- DTMF dialing
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Codec
- G.711μ-law
- G711a-law
- G.729, G.729a/b
- G.723
Security
- HTTP 1.1 basic/digest
- authentication for Web setup
- MD5 for SIP authentication (RFC2069/ RFC 2617)
Dial Method
- Direct IP call without SIP proxy
- Dial number via SIP server
- Dial URI via SIP server
- Flexiable Dial Plan
Router
- Virtual Server
- NAT
- DHCP Server
- DMZ
IP Assignment
NAT Traversal
- STUN
- Proprietary tunnel-based TCSP
- Fresh Open
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Voice Quality
- VAD (Voice Activity Detection)
- CNG (Comfort Noise Generation)
- AEC (Acoustic Echo Cancellation)
- AGC
- Packet Loss Concealment
- Each Line G.168 up to 128ms
- Dynamic Jitter buffer
- Bell 202 and V.23 Caller ID
Tone
- DTMF
- Ring Tone
- Ring Back Tone (local and remote)
- Dial Tone
- Busy Tone
- MWI
TCP/IP
- IP/TCP/UDP/DHCP/RTP/RTCP
- ICMP/HTTP/SNTP/TFTP/DNS
Configuration & Management
- Web browser
- Touch-tone telephone keypad configuration with voice prompt
- Auto-provisioning scheme with Aegis QuickStep
- Reverse Control even residing after NAT/Firewall
- Periodic “HeartBeat” Monitor
Firmware Upgrade
- TFTP
- AQS extensible remote agent
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