E1/T1/J1 Port | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 1 (Support PRI, MFC R2, SS7, E&M) |
Protocol | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | SIP (RFC3261) |
Transport Protocol | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | UDP, TCP, TLS, SRTP |
DTMF | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | RFC2833, SIP INFO, In-band |
Codec | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex |
Echo Cancellation | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | ITU-T G.168 LEC |
Network Protocol | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | FTP, TFTP, HTTP, HTTPS, SSH |
Network | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | DDNS, Firewall, PPPoE, Static IP, QoS, Static Route |
PRI switch types | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | Euro ISDN, nation, Q.SIG |
CAS | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | MFC R2 (Argentina, Brazil, China, Czech Republic, Colombia, Ecuador, Indonesia, ITU, Mexico, Philippines, Venezuela) |
SS7 | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | ITU, ANSI, China |
LAN | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 1 10/100Mbps |
WAN | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 1 10/100Mbps |
USB | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 1 |
Dimensions (L × W × H) (mm) | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 213 x 160 x 44 |
Power Supply | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | AC 100-240V (12V 2A) |
Operation Range | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 0°C to 40°C, 32°F to 104°F |
Storage Range | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | -20°C to 65°C, -4°F to 149°F |
Humidity | ![](http://www.yeastar.com/wp-content/uploads/2016/05/ellipse.png) | 10-90% non-condensing |