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
Supported the new endpoints W73H and can be perfectly compatible with W53H, W56H, W59R, CP930W and color screen DDPhone (T54W+DD10K). Due to the performance of the handset, only W73H and W59R support no perception upgrade.