Specifications
- Ports: 8 × FXS (RJ11)
- Network: 1 × 10/100 Mbps Ethernet LAN port
- Protocols: SIP (RFC3261) and IAX2
- Voice Codecs: G.711 (µ-law/a-law), G.722, G.723, G.726, G.729A/B, GSM, ADPCM, Speex
- Fax Support: T.38 and G.711 pass-through
- Echo Cancellation: ITU‑T G.168 with echo delays of 32/64/128 ms
- DTMF Detection: In‑band, RFC2833/RFC4733, SIP INFO
- QoS Features: DiffServ, ToS, 802.1p/Q VLAN tagging




