Meritline.com ML 220 - Manual (Page 14)

16ms echo cancellation
Dynamic buffer management—minimize effect to voice quality caused by audio delay jitter
9.2 Standard and Protocol
IEEE 802.3 10 Base-T
G.711A, G.711µ, G.723.1 5.3K/6.3 Kbps and G.729 audio codec
H.323
Abbreviation dial plan
TCP/IP: Internet Transport and Control Protocol
RTP: Real-time Transport Protocol
RTCP: Real-time Control Protocol
G.723.1 G.729 VAD/CNG economical bandwidth
G.165 16ms Echo cancel
DTMF DTMF Tone Generate and Detection
DHCP: Dynamic Host Configuration Protocol
DNS:Domain Name Server
NTS: Network Time service
HTTP: Hyper Text Transfer protocol
FTP File Transfer Protocol
Build in H323 proxy support
9.3 Specification
180 x 160 x 92 mm (L x W x H)
9.4 Electric Characteristics
Voltage: 12V DC, 500mA
Power adapter: AD/DC input 100~120V (USA, Japan etc.) or 220~240V (China, Europe etc.) or
100~240V,47-63Hz
Network interface: IEEE 802.3 10 Base-T
EMC: FCC Part15 CLASS B
9.5 Operational Environment
Operational temperature: 0 to 50° C (32° to 122° F)
Storage temperature: -30° to 65° C (-22° to 149° F)
Humidity: 10% to 90% no dew
9.6 Recommend usage net condition
Delay: Less than 400ms
Jitter: Less than 100ms
Package lost percent: Less than 10%
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