Linksys SPA3102 1xFXS + 1xFXO (PSTN) ATA

 I/FACES : 2 100baseT RJ-45 Ethernet Port (IEEE 802.3) -- 1 WAN, 1 LAN
1 x RJ-11 FXS Phone Ports - For Analog Circuit Tel Device (Tip/Ring)
1 x RJ-11 FXO Phone Ports - For a Telco or PBX Connection
FXS : Ring Voltage: 40-55 VRMS Configurable
SECURITY : Password Protected System Reset to Factory Default
Password Protected Admin & User Access Authority
Provisioning/Configuration/Authentication:
HTTPS with Factory Installed Client Certificate
HTTP Digest - Encrypted Authentication via MD5 (RFC 1321)
Up to 256-bit AES Encryption
DIMENSIONS : 101 x 101 x 28 mm) W x H x D
* Single Stage and Two Stage Dialing
* Forward Calls to VoIP service - Selective, Authenticated, All
* Forward Calls to PSTN service - Selective, Authenticated, All
* PSTN Line Sharing with Multiple Extensions
* Automatic PSTN Fallback (Loss of Power or IP Service to Unit - with
Quiescence to Normal Operations)
* Advanced Inbound and Outbound Call Routing
* Independent Configurable Dial Plans - Up to 8
* Force PSTN Disconnection
* Sequential Dialing Support
* Fax: G.711 Pass Through or Real Time Fax over IP via T.38