IP phone GRANDSTREAM GXP1620
Characteristics
		
		Headphone type: Wired
		Connection: IP
		Number of telephone lines: 2
		2 SIP accounts
		Number dialing
		Memory (phonebook): 1000 numbers
		Auto connect:: Yes
		One-click typing: Yes
		Flexible Numbering Plan: Yes
		Incoming call functions
		Storage of incoming/outgoing/missed calls: 200 records
		Redirection:: Yes
		Automatic reply:: Yes
		Standby mode: Yes
		Shared-call appearance (SCA):- Yes
		Talk
		HD Audio:: Yes
		Tripartite conference-connection:: Yes
		Speakerphone:: Yes
		Display
		Type: LCD
		Magnification: 132 x 48 (2.95'')
		Interface
		LAN 10/100 Mbit/s: 2
		RJ9: Yes
		PoE: No
		Safety
		Admin/customer access control
		Authentication based on MD5 and MD5-sess
		256 AES encrypted configuration file
		Media access control SRTP, TLS, HTTPS, 802.1x
		Sound codec
		G.711µ/a, G.722 (wide channel)
		G.723, G.726-32, G.729 A/B, iLBC
		In and out of range DTMF (In audio, RFC2833, SIP INFO)
		VAD, CNG, AEC, PLC, AJB, AGC
		Protocol
		SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP,
		ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN,
		SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP, CDP/SNMP/RTCP-XR
		Loading phonebook (XML/LDAP, up to 1000 items): Yes
		Personalized Music Ringtones:: Yes
		EHS support (for Plantronics headsets): Yes
		Adjusting the phone's tilt angle: Yes
		Possibility of wall mounting: Yes
		Physical parameters
		Power supply: input 100-240 VAC, 50-60 Hz; Output: +5VDC, 600mA
		Dimensions: 20.9 x 18.45 x 7.62 cm
		Weight: 0.73 kg
		Weight with packaging: 1.1 kg