W70B; Yealink DECT IP base station;Up to 20 simultaneous calls;Up to 10 DECT cordless handsets;Up to 10 SIP accounts;Support Opus audio codec;Noise Reduction System;TLS and SRTP security encryption;No Perception Upgrade;with PSU;Supports up to 20 x concurrent calls, and up to 10 additional YKW56H / YKW59R / YKW73H handsets and YKCP930W conference telephone and YKT54W telephones with DD10K DECT USB dongle, 1 x Fast Etherent, add up to 6 repeaters
