Yealink CPN10 USB To PSTN For CP920

Used in combination with the YealinkIP Conference Phone CP860/CP920, the CPN10, is a PSTN box to meet the demandsin some countries and areas which are still using the public switched telephonenetwork (PSTN). With this PSTN box CPN10, the Yealink CP860/CP920 can bothsupport the conferencing call based on SIP protocol and PSTN.