Trendnet VoIP Gateway User Manual

TVP-221H User’s Guide 

Desktop with 4 Analog Ports 
• Loop start 2 x FXO (RJ-11) 
• Loop start 2 x FXS (RJ-11) 

Complex line impedance 

 

H.323v3 (Normal/fast-start mode) 

Supports gateway-gateway direct routing and gateway-gatekeeper 

assisted routing mode 

ITU-T G.711 u-law, G.723.1, and G.729A/B, auto-switching (Frame-

rate/packet: 1 – 8) 

Supports T.30 G3 fax on PSTN Interface; ITU-T T.30 fax spoofing; 

ITU-T T.38 

4 channels voice/fax 

Gain control; G.168 echo cancellation (16 ms); Voice activity 

detection (VAD); Comfort noise generation (CNG); Call progress 
detection; DTMF detection/filtering/regeneration (H.323v3/IMTCv1) 

LAN: 1 (10Base-T/100Base-TX, Auto-Negotiation, Auto MDIX) 

TCP/IP, DHCP, HTTP, DNS 

IP Precedence, PLAR, DDNS 

 
 

Built-in three-tier dialing plan and destination hunting 

Supports gatekeeper authorization and accounting 
Supports gatekeeper call routing control and gateway mapping 
Call accounting information on gateway (via RS-232) or gatekeeper 
RS-232 (DCE mode) 

Built-in HTTP Web-based remote management 
Telnet remote management 

Flash memory and built-in TFTP allowing firmware and feature 

upgrade via network 

System: 2 Power, System 

LAN: 4, Link/ACT, Speed, Collision 

Voice: 2 per channel (Ringing, Active) 
Microsoft NetMeeting*; Cisco AS5300, 3600; RADVISION 

gatekeeper; Cisco gatekeeper 

241 x 135 x 45 mm (9.5 x 4.3 x 1.8 inches) 

1.9 kg (4.2 lb) 
90-260 VAC, auto ranging, 50-60 Hz 

12V DC, 2.0A 

Operating temperature: 0° ~ 50° C (32° ~ 122° F) 

Humidify: 90% (non-condensing) 

CE; FCC, UL 

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