1, Three SIP Proxy and accounts registered at the same time for each FXS port (totally 6 user names), one SIP Proxy offline, other one can replace it to work timely
2, Built-in router
3, With reverse-polarity signal, billing function supported
4, Supports mutual communication between two FXS ports when the device does not connect any network cable
5, Supports point-to-point communication (call the other party's IP address directly) when the device does not register any SIP network server platform
6, Supports voice-announcing IP address and operating by hand or by web page
7, Supports SIP 2.0 (RFC3261), TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP (both client and server), NTP, PPPoE, STUN, and TFTP
8, Powerful digital signal processing (DSP) to ensure superb audio quality
9, Advanced adaptive jitter control and packet loss concealment technology
10, Supports various vocoders, including g.711 (a-law and u-law), g.723.1 (5.3K/6.3K), g.726, g.729A/B and iLBC
11, Supports caller ID/name display or block, hold, call waiting, flash, call transfer (blind/consultative)
12, Call forward, in-band DTMF, dial plans
13, Supports call waiting caller ID
14, Supports fax pass through and T.38 (pending)
15, Supports silence suppression, VAD (voice activity detection), CNG (comfort noise generation)
16, Line echo cancellation (G.168), and AGC (Automatic Gain Control)
17, Supports standard encryption and authentication (DIGEST using Md5 andMD5-sess)
18, Supports Layer 2 (802.1qVLAN, 82.1P) and Layer 3 Qos (Tos, Diffserv, MPLS)
19, Supports automated NAT traversal without manual manipulation of firewall/NAT
20, Supports device configuration via built-in IVR, web browser or downloading encrypted configuration file through TFTP or HTTP
21, Supports firmware upgrade via TFTP or HTTP
22, Ultra compact (wallet size) and lightweight design, great companion for travelers
23, Desk/wall mounts
24, Interface:
WAN: 1pc, connect to XDSL/cable modem, network switch or router
LAN: 1pc, connect to PC or other network equipment
FXS: 2pc, connect to normal phone, DECT/cordless phone, electrograph and switch
Power: 1pc, connect to power adapter: 12V DC 1A
Products size: 13.5 x 10.8 x 3.3cm
Box size: 24.1 x 15.8 x 4.8cm
Carton size: 49 x 26.5 x 35cm
Quantity: 20pcs
Weight: 11kg
