A high-end IP phone for small business users, the GXP1628 delivers a suite of powerful VoIP features in an easy-to-use fashion with a modern design. The GXP1628 offers support for up to 2 lines and features Gigabit ports to maximize connection speeds and call quality. The phone includes 8 BLF/speed dial keys that allow users to easily monitor presence and status of other extensions and transfer calls.

Core Features:

2 SIP accounts, 2 line keys, 3-way conferencing, 3 XML programmable context-sensitive soft keys
HD audio on speakerphone and handset
Dual-switched Gigabit ports, integrated PoE
8 dual-colored BLF/speed dial keys
EHS support for Plantronics headsets
Up to 1000 contacts, call history up to 200 records

Weight	2 lbs
Dimensions	12 × 9 × 4 in
Brand	Grandstream

Protocols/Standards: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record,S- RV, 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 10/100/1000 Mbps Ethernet ports, integrated PoE
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, 8 BLF 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, in-band 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), call park/pickup, 3-way conference, shared-call-appearance (SCA) / bridged-line-appearance (BLA), downloadable 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