SIP Protocol
- RFC3261
- RFC3262
- RFC3264
- RFC3311
- RFC3515
- RFC3581
- RFC3966
- RFC4028
- SIP registration (Per trunk, per gateway)
- Registration expire setting
- SIP trunk
- Backup SIP proxy (Up to 10 proxies)
- Peer-to-peer communication
- SIP-to-SIP relay
- Hook flash relay (INFO)
FXS
- Polarity inverse generation
- Caller ID generation (FSK, DTMF, before ring and after ring)
- Ring cadence setting
- Ring frequency setting
- Volume control
- Hook flash timing setting
- Message waiting indicator (FSK, polarity inverse)
FXO
- Polarity inverse detection
- Caller ID detection (FSK, DTMF, before ring and after ring)
- Busy tone detection
- DTMF out-pulsing timing setting
- Volume control
- Ring timing setting
- Automatic attendant (2nd – stage dialing)
- Direct inward dialing
- Busyout
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Codec/FAX/RTP
- G.711ALaw, G.711ULaw, G.729A, G.723.1r63, G.723.1r53, GSM
- T.38 fax relay, T.30 fax transparent
- Echo cancellation
- Dynamic jitter buffer management
- Static jitter buffer
- DTMF relay (RFC 2833, SIP/INFO, inband)
Voice QoS
- IEEE 802.1p tag
- DiffServ code point (TOS) bits
Call Control
- Blind transfer
- Explicit transfer
- Call forward on busy
- Call forward on no answer
- Call forward variable
- Call waiting
- Caller ID
- Caller ID blocking
- Caller ID on call waiting
- Distinctive ring
- Do not disturb
- Music on hold
- Color ring back tone
- Call progress tone (Configurable)
- Release control (Called party control, calling party control)
- Three-way calling
- Speed dialing
- Calling and called number based routing
- Call number transformation (Add, delete, replace)
- Hunt group (Sequential and circular hunt)
- Ring group
- Digit map
- PSTN failover (Upon IP network break or failure to reach SIP proxy, or power break)
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Networking
- DHCP
- DNS/DDNS
- PPPoE
- NAT traversal (STUN)
Security
- IP access list (IP table)
- SIP/RTP/TELNET/HTTP/TFTP port assignment
- Web-utility access privilege (Admin and user)
System Management
- TR069-based management (Include TR069, TR104, and TR106)
- Standard SNMP agent (MIB v2)
- Web-based management interface (Local and remote access)
- Firmware upgrade
- Log management (8 levels)
- Syslog
- Various debugging and call trace
- TCP dump
- Remote management with console and telnet
- Configuration files import and export
- System status monitoring and statistics
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