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