User Guide
Page 21
...that works over the analog telephone system, POTS (Plain Old Telephone Service). P-2612HNU(L)-FxF User's Guide 21 CHAPTER 1 Introduction 1.1 Overview The ZyXEL Device is an ADSL2+ Integrated Access Device (IAD) that combines an ADSL2+ router with Voice over IP (VoIP) communication capabilities to allow... wireless LAN connectivity. • "U" denotes a USB port used for example P-2612HNU(L)-F1, denote a device that works over ISDN (Integrated Services Digital Network) or T-ISDN (UR-2). When the ZyXEL Device does not have VoIP phone service and PSTN phone service at the same time. ...
...that works over the analog telephone system, POTS (Plain Old Telephone Service). P-2612HNU(L)-FxF User's Guide 21 CHAPTER 1 Introduction 1.1 Overview The ZyXEL Device is an ADSL2+ Integrated Access Device (IAD) that combines an ADSL2+ router with Voice over IP (VoIP) communication capabilities to allow... wireless LAN connectivity. • "U" denotes a USB port used for example P-2612HNU(L)-F1, denote a device that works over ISDN (Integrated Services Digital Network) or T-ISDN (UR-2). When the ZyXEL Device does not have VoIP phone service and PSTN phone service at the same time. ...