- FXS(24 Ports)
- MGCP / SIP / H248
- Codec G.711, 729A, 723.1, G.726
- VAD(Silence Suppression) & CNG
- G.168-2000 Echo Canceller, Jitter Buffer
- Packet Loss Concealment
- RFC2833 - Out of Band DTMF
- Gain / Attenuation Setting
- Modem Support Rate Up V.92
- Caller ID Support : Bellcore, ETSI, DTMF-based(Nor-Europe)
- Line Polarity Reversal Generation
- Hunting Group
- Call Holding & Call Forwarding
- Call Transfer, Call Waiting , 3-way Conference
- Outbound Proxy
- NAT Traversal (STUN) (RFC 3489)
- Incoming Call Barring
- T.38 Fax Relay
- Single Codec Assignment
- Multiple SIP Proxies Registering
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