The Quadro 2xi is an almost identical cousin to the 2x, but substitutes an ISDN high-speed, high-bandwidth connection for the regular phone port. An ISDN line offers a step up in WAN performance over DSL connections and the ISDN SO port accepts analog voice and other activity (fax, etc.). Note: ISDN is not widely supported in the USA. It is intended for all other countries with large networks of ISDN-based service providers.Click HERE for Datasheet The Quadro2xi is an as fully-featured IP PBX for home offices and teleworkers as the Quadro2x is. The important difference: Quadro2xi offers you one ISDN line instead of FXO and connects you via two B-channels of 64 kbit/s each to the digital PSTN. A 10Base-T Ethernet line provides access to the Internet. Alltogether, two standard phones and 16 fully-featured LAN IP phones may be attached. Additional virtual extensions allow e.g., registering at various SIP servers. In addition, all extensions assigned to a line may be mirrored and act as remote IP extensions. Wherever you are, calls will reach you, and you will be able to make calls as if you were at your home office. The Quadro2xi offers the same multitude of features as the Quadro2x: extensive PBX functionality, integrated voicemail, cost saving call routing functionality, IP routing, SIP call signaling and much more. The Quadro2xi IP PBX embodies a fullyfledged Internet access router with firewall security, including NAT, policy and service based filtering. An extensive IPSec VPN functionality with DES, 3DES and AES encryption makes an additional contribution to data security. The Quadro2xi IP PBX is easily applicable for VoIP Carriers as well as small businesses. For VoIP carriers, a special wizard has been implemented that facilitates the configuration of Quadro2xi to work according to individual requirements. 14"x 12"x 3" MFG# SKU-QUADRO-1304

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