FXO VOIP Gateways

FXO VOIP Gateway bridges local PSTN and IP network for voice and fax services. It features the compliance of H.323 v3 protocol with H.450 services providing traditional PBX functionality and the support of DHCP for easy operation and system configurations and is an ideal low cost product for SME and SOHO IP telephony application.

FXO VOIP Gateway comes in three models: NG220, NG420 and NG620, which provide you with a choice of two, four or six FXO ports. To access this free voice and fax communication, simply connect the for up to two, four or six PSTN lines or PBX Ext. ports, and then to your existing Internet or Intranet connection. Once configured, then allows voice and fax to travel down the same path as your traditional data communications.

provides various voice codec of G.711, G.723.1 and G.729 with Dynamic Jitter Buffer and Bad Frame Interpolation delivering toll quality voice and fax services under managed network of VPN or public Internet network.

TELNET and COM port provide two easy ways of local and remote configurations, management and software download. This enables ITSP/ISP to provide centralized control, management and software upgrade to remote site gateways. This allows for remote configurations of IP/Gatekeeper addressing setting, dial plan, voice codec, Gatekeeper and Peer to Peer mode selection, QoS setting and call progress tone setting, etc.

Technical Specifications

Models
	NG220 - 2-Port FXO VOIP Gateway
	NG420 - 4-Port FXO VOIP Gateway
	NG620 - 6-Port FXO VOIP Gateway
Interfaces
	One 10 Base-T Ethernet RJ-45 Port
	One DB-9 RS-232 COM Port
	Two RJ-11 Telephone Ports for NG220
	Four RJ-11 Telephone Ports for NG420
	Six RJ-11 Telephone Ports for NG620
	AC Power Input Outlet
	AC Power Switch
General Features
	ITU-T H.323 v3 compliance
	Support of behind NAT Router or IP Sharing Device
	Gatekeeper Mode or Peer-to-Peer Mode
	Support of Auto-attendant (Tone or Voice Greeting)
	Line Hunting
	PSTN Polarity Reversal Detection
	Provide of 2nd Dial Tone to PSTN
	E.164 Common Dial Plan
	DTMF Dialing
	DTMF Detection/Generation
	TFTP software upgradeable
	Remote Configurations/Reset
	LED indications for system status
	MS NetMeeting v3.0 compatible
	Support of Static IP and DHCP
	Support of QoS by setting ToS (Type of Service) parameters of VOIP packets
Audio Features
	Codec: G.711 a/μ-Law, G.723.1, G.729
	VAD (Voice Activity Detection)
	CNG (Comfort Noise Generation)
	G.168/165-compliant Adaptive Echo Cancellation
	Dynamic Jitter Buffer
	Bad Frame Interpolation
	Complete voice band signaling support
	Receive of Caller ID (DTMF or FSK) from PSTN
	Inband or Outband DTMF Detection/Generation
	H.450 Services of Call Hold and Call Transfer
	Gain/Attenuation Settings
	Call Progress Tones: Dial Tone, Busy Tone, Call Holding Tone and Ring-back Tone
Fax Support
	Automatic Fax Detection
	Group 3 Fax Relay at 2.4~14.4K bps
	Support of T.38 Protocol
Management Features
Two easy ways of system configurations:
	Console Port
	Telnet
LED Indicators for System Status
	Status for Power, Telephone Lines, Ethernet Status, GK or P2P Mode, Normal or Downloading Mode.
Physical Description
	Dimensions: 221 mm (W) x 42 mm (H) x 217 mm (D)
	Weight: 1.4 Kg
Specifications are subject to change without notice.

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