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Review Summary
Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.
Browse our FAQ
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDPMED, LDAP, TR-069, 802.1x, TLS, SRTP
Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports, integrated PoE
132 x 48 backlit graphical LCD display
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
Support for G.711½/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
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 500 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
RJ9 headset jack (allowing EHS with Plantronics headsets)
Yes, HD Handset and speakerphone with support for wideband audio
Yes, 2 angled positions available, wall mountable
Yes
Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS
User and administrator level access control, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, simplified and traditional Chinese, Korean, Japanese and more
Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-069 or AES
Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA PoE: IEEE802.3af Class 2, 3.84W-6.49W
FCC: Part 15 (CFR 47) Class B
CE: EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1
RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS 60950.1
Operation: 0 to 40 deg. C / 32 to 104 deg. F
Storage: -10 to 60 deg. C / 14 to 140 deg. F
10% to 90% Non-condensing
220.5 x 192.5 x 76.0mm / 8.68 x 7.58 x 2.99" (with handset)
0.8kg / 1.76lbs
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. Additional features include HD audio for crystal-clear calls, 3-way conferencing to maximize productivity, 3 XML programmable soft keys for customization, EHS support for Plantronics headsets and integrated PoE to allow one cord to power the phone and give it a network connection.
These features and more allow the GXP1628 to be a high-quality and versatile small business IP phone. As all Grandstream IP phones do, the GXP1628 features state-of-the-art security encryption technology (SRTP and TLS). The GXP1628 supports a variety of automated provisioning options, including zero-configuration with Grandstream's UCM series IP PBXs, encrypted XML files and TR-069, to make mass deployment extremely easy.