SA-4G

  • 4-Channel Gateway Support – Supports up to 4 channels, marked as digits 0 to 3.
  • Multi-Protocol Support – Compatible with SIP, STUN, PPPoE, HTTP, DHCP, DNS, and standard VoIP codecs (G.711, G.723.1, G.729AB), with PPTP support on 4-channel gateways.
  • Advanced Call & Voice Features – Includes PLC (Packet Loss Concealment), VAD/CNG (Voice Activity Detection & Comfort Noise), Echo Cancellation (ITU-T G.168/165), and automatic network negotiation.
  • Customizable User Interaction – Supports IVR recording customization, white/black lists, hotline function, DTMF adjustment, and adjustable port gain.
  • Automatic Network Negotiation – Detects network parameters automatically and adapts, ensuring seamless connectivity.
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