A reliable IP phone for small business users, the GXP1620 delivers a suite of powerful VoIP features in an easy-to-use fashion with a modern design. The GXP1620 offers support for up to 2 lines and features full HD audio on both the speaker and handset to allow users to communicate with the utmost clarity. The GXP1625 features built-in PoE while the GXP1620 does not. These features allow the GXP1620 to be a high-quality and easy-to-use small business IP phone.

Core Features:

2 SIP accounts, 2 line keys, 3-way conferencing, 3 XML programmable context-sensitive soft keys
HD audio on speakerphone and handset
EHS support for Plantronics headsets
Up to 1000 contacts, call history up to 200 records

Weight	1.8 lbs
Dimensions	11 × 9 × 4 in
Brand	Grandstream

Protocols/Standards: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A re- cord, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP, CDP/SNMP/RTCP-XR
Network Interfaces: Dual switched auto-sensing 10/100 Mbps Ethernet ports, integrated PoE (GXP1625 only)
Graphic Display: 132 x 48 (2.95’’) backlit graphical LCD display
Feature Keys: 2 line keys with dual-color LED and 2 SIP accounts, 3 XML programmable context sensitive soft keys, 5 (navigation, menu) keys. 13 dedicated function keys for MUTE, HEADSET, TRANSFER, CONFERENCE, SEND and REDIAL, SPEAKERPHONE, VOLUME, PHONEBOOK, MESSAGE, HOLD, PAGE/INTERCOM, RECORD, HOME
Voice Codecs: Support for G.711µ/a, G.722 (wide-band), G.723, G.726-32, G.729 A/B, iLBC, inband and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC
Telephony Features: Hold, transfer, forward (unconditional/no-answer/busy), 3-way conferencing, call park/pickup, shared-call appearance (SCA) / bridged-line-appearance (BLA), Down- loadable phone book (XML, LDAP, up to 1000 items), call waiting, call history (up to 200 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized music ringtones, server redundancy & fail-over

For a full list of specifications, please refer to the product datasheet