Minitar MVA11A VoIP SIP ATA with FXS, FXO, LAN, WAN ports, 3 SIP registrations.

Lets you make low cost long distance or international calls using your internet connection. This little gem has everything.

It is robust and reliable and can be connected in just about every situation. It can also register to 3 different SIP accounts meaning you can make and receive calls from the same phone using your home and business SIP/SmartFone accounts and have a spare for special calling. Plus you get fallback to your legacy PSTN account too.

Web Interface - Telnet - HTTP - Voice config - PSTN FallBack - 1 x WAN - 1 x FXO - 1 x FXS, - 1 x 10/100
Codecs: G.711, G.726, G.729a, G729B , Call functions etc.

• Compliant with IEEE 802.3, 802.3u 10/100M Ethernet atandard
• Supports SIP 3261 (Radvision SIP stack). TCP/UDP/IR RTP/RTCP, HTTP, ICMP, ARP, DNS, and DHCP
• Interoperable with various third party SIP end user devices
• Supports popular voice-codecs including G.729, and G.711 (A-law and µ-law)
• Supports standard voice features such as Caller ID, Consultation Hold, Call Waiting, Blind Call Transfer, Attended Call Transter, Call Forwarding, Mid-Call DTMF (only using RTP) and 3-Way Conferencing
• Supports Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), and Line Echo Cancellation
• Supports DIGEST authentication (MD5 only)
• Provides easy configuration through a web interface and limited configuration through the handset dial-pad
• Voice over data prioritization ensures high-quality telephone service
• Supports Local PSTN call transfer to VoIP call or VoIP call transfer to local PSTN call
• Selective PSTN / VoIP voice communications
• PSTN Fallback support through Hardware Relay—applicable when power is down or when WAN interlfce is down
• STUN support for NAT traversal

Get more info from the Minitar Website