Physical Interfaces FXS Port: 1
FXO Port: 1
SIM Slot: 1
Network Port:1 WAN Port & 3 LAN Ports(10 / 100 Base-T RJ45)
WiFi:2.4Ghz 802.11n
Voice Capabilities VoIP Protocols: SIP over UDP / TCP / TLS, SDP, RTP / SRTP
Codecs: G.711a / μ law, G.723.1, G.729A / B
Silence Suppression
Comfort Noise Generator
Voice Activity Detection
Echo Cancellation: G.168 with up to 128ms
Dynamic Jitter Buffer
Adjustable Gain Control
Automatic Gain Control
Call Progress Tones: Dial Tone, Ring Back Tone, Busy Tone
FAX: T.38 and Pass-through
NAT Traversal: STUN / UPnP
DTMF: RFC2833 / Signal / Inbound
FXS FXS Connector: RJ11
Caller ID: Bell core Type 1&2, ETSI, BT, NTT, and DTMF
Answer and Disconnect Signaling: Answer, Disconnect, Busy Tone
Polarity Reversal
Hook Flash
FXO FXO Connector: RJ11
Caller ID: FSK and DTMF
Polarity Reversal
Answer Delay
Busy Tone Det ...