4-Port SIP VoIP Gateway (4 FXS)

VGW-420FS

Datasheet
Manual
Firmware

Features

SIP Applications

  • IETF SIP RFC3261 based on UDP/TCP/TLS
  • 4-line FXS connects to analog phone set or PABX
  • Fax over T.38 and Pass-through
  • ITU-T G.711 A-law, G.711 μ-law, G.723.1 and G.729 voice coding
  • In-band / out of band DTMF (RFC4733, RFC2833 / SIP INFO)
  • Echo cancellation exceeding ITU-T G.168, up to 128ms tail length
  • Supports SIP Trunk and Caller ID: DTMF/FSK CLI Presentation

Internet Features

  • Supports SNMP v1/v2/v3 
  • Supports VLAN 802.1P and 802.1Q
  • Supports Layer3 QoS and DiffServ
  • Supports STUN (RFC 3489) and Outbound Proxy
  • Supports TR069 and Auto Provisioning 
  • Supports TLS/SRTP Security 

Call Features

  • Call waiting /  transfer (Blind transfer, Attend transfer)
  • Call hold / Quick pick
  • Call Forwarding Unconditional
  • Call Forwarding on No Reply
  • Hotline / Speed Dial / Direct IP Call
  • Do Not Disturb (DND) / Three-way conference