Addtron Technology Netphone KE1021A - Manual (Page 14)

z 16ms echo cancellation
z Dynamic buffer management—minimize effect to voice quality caused by audio delay jitter
9.2 Standard and Protocol
z IEEE 802.3 10 Base-T
z G.711A, G.711µ, G.723.1 5.3K/6.3 Kbps and G.729 audio codec
z H.323
z Abbreviation dial plan
z TCP/IP: Internet Transport and Control Protocol
z RTP: Real-time Transport Protocol
z RTCP: Real-time Control Protocol
z G.723.1 G.729 VAD/CNG economical bandwidth
z G.165 16ms Echo cancel
z DTMF DTMF Tone Generate and Detection
z DHCP: Dynamic Host Configuration Protocol
z DNS:Domain Name Server
z NTS: Network Time service
z HTTP: Hyper Text Transfer protocol
z FTP File Transfer Protocol
z Build in H323 proxy support
9.3 Specification
z 180 x 160 x 92 mm (L x W x H)
9.4 Electric Characteristics
z Voltage: 12V DC, 500mA
z Power adapter: AD/DC input 100~120V (USA, Japan etc.) or 220~240V (China, Europe etc.) or
100~240V,47-63Hz
z Network interface: IEEE 802.3 10 Base-T
z EMC: FCC Part15 CLASS B
9.5 Operational Environment
z Operational temperature: 0 to 50° C (32° to 122° F)
z Storage temperature: -30° to 65° C (-22° to 149° F)
z Humidity: 10% to 90% no dew
9.6 Recommend usage net condition
z Delay: Less than 400ms
z Jitter: Less than 100ms
z Package lost percent: Less than 10%
z Bandwidth: More than 30Kbps
Safety Warning: Please do not place this product under fire and high temperature. Avoid heavy impact, and
do not leave the product in rainy or highly humid environments!
10. Installation Options