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.).

PBX Features

Note: ISDN is not widely supported in the USA. It is intended for all other countries with large networks of ISDN-based service providers. If you are unsure of ISDN support in your region please contact your dealer or Epygi Technologies directly for clarification.

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Quadro 2xi tech data sheet