Security algorithms
AES
HTTPS
MD5
SRTP
TLS
WPA
WPA2
WPA3
Quality of Service (QoS) support
AC adapter output current
AC adapter output voltage
Operating temperature (T-T)
Operating relative humidity (H-H)
Storage relative humidity (H-H)
Hearing aid compatibility
Dual-Tone Multi-Frequency (DTMF) modes
In-band
Out-of band
SIP info
Number of handles included
USB Type-C ports quantity
Message-waiting indicator (MWI)
International Protection (IP) code