• VG4X VoIP gateway is one product of VoIP VG series by VOPTech. It is a carrier class VoIP gateway. Carriers and enterprises can use it to provide regular phone, fax, and IP Centrex services through broadband networks. VG4X guarantees a smooth transition to NGN (Next Generation Network), therefore protects your long-term investments. When fully configured.
• VG4X is designed to meet the VoIP demands of telecom-munications carriers, value-added service providers, and mid-to-large-sized enterprises. Installed in a highly compact 1U chassis, and two power feeds (so end-users have the options to use one or two 70W power supply to protect system from power surge and to provide redundancy).

Key features:

• Line configuration: up to 48 ports, can be FXS + FXO mixed ports mode.
• Voice processing: voice codec: G.711, G.729A, G.723.1, GSM, iLBC.
• Echo cancellation: G.168; Tail Length: 64 milliseconds.
• Dynamic jitter buffer; voice activity detector (VAD); and comfort noise.
• End user features: generator (CNG).
• Fax processing: caller ID, call forwarding, call waiting, hotline, prefix dialing, do not dist.
• Billing: T.30, T.38 fax relay.
• Configuration methods: radius interface; polarity reverse.
• Web based user interface; text based configuration".
• Remote provisioning: HTTP/web, auto provision, remote configuration, software upgrade, collects log files.

Signaling:

• Off hook detection: FXS loop start, DDI (Hong Kong).
• VoIP protocol: SIP (RFC3261), MGCP (RFC2705) 3GPP TS 24.228, TS 24.229.
• DTMF: in-band: RFC2833, INFO (SIP).

Other special feature:

• Auto dial: DTMF mode.
• Dual telephone number: FXS port can have two number for incoming calls (PSTN and extension).
• Redundancy SIP server: support up to 10 SIP servers to enhance system reliability.
• Fashion ringing tones: can download and store 20 music files.

Hardware:

• Maximum user line length: 3000 meters.
• Ringer equivalence number: 5 for short loop (300 meters), 3 for medium loop (1500 meters).
• Ringing voltage: 60V RMS.
• Line interface: RJ45, per RJ45 provide 4 phone lines.
• Ethernet interface connector: RJ-45 10/100 Base-T.
• Internal memory: 128MB.
• Flash memory: 16MB.
• Input voltage: 110～240V AC, 50～60Hz, input current: 1A max.
• DSP: TI 320VC5509A.
• CPU: Motorola PowerQuicc8247.
• Power consumption: main unit 70W (max.), expansion unit 55W (max.).
• Dimension (H x W x D): 4.4 x 44 x 30cm.
• 1U height, 19” Chassis.
• Weight: net weight: 9kg, gross weight: 14kg.
• Environment requirement:
• Operation environment: between 0～40℃ and humidity between 10%～95% (non condensing).
• Non operation environment: 10～60℃.

Package:

• Unit weight (kg): 4.04.
• L: 53.
• W: 37.
• H: 15.
• Unit volume weight (kg): 5.9.