Yealink W90DM

Seamless handover and roaming, Up to 60 base stations/ 250 handsets /250 parallel calls and 250 SIP accounts, Support XML/LDAP/Remote Phonebook and Xsi Directory, Compatible with Yealink W56H/W53H/W73H/W78H/W57R/W59R/CP930W/DD Phone, Support Opus and PoE