The Grandstream GXP1628 is a powerful and dependable entry-level Gigabit IP phone engineered for small-to-medium businesses, delivering a suite of essential telephony features in an accessible layout.
Technical Specifications
- Manufacturer: Grandstream
- Part Number / SKU: GXP1628
- Product Type: 2-Line Gigabit IP Phone
- Protocols / Standards: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP
- Network Interfaces: Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports with integrated PoE
- Graphic Display: 132 x 48 pixel backlit graphical LCD display
- Feature Keys: 2 line keys with dual-colour LED and 2 SIP accounts; 3 XML programmable context-sensitive soft keys; 5 navigation and menu keys; 8 BLF keys; 13 dedicated function keys for mute, headset, transfer, conference, send, redial, speakerphone, volume, phonebook, message, hold, page/intercom, record, and home
- Voice Codecs: Support for G.711u/a, G.722 (wideband), G.723, G.726-32, G.729 A/B, iLBC, in-band and out-of-band DTMF
- 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 500 items), call waiting, call history (up to 200 records), and automated redial
- Headset Jack: RJ9 headset jack enabling Electronic Hook Switch (EHS) with Plantronics headsets
- Base Stand: Yes, with 2 angled positions available; wall mountable
- Power Supply: Universal Power Supply Input 100-240VAC 50-60Hz, Output +5VDC, 600mA; Integrated Power over Ethernet (PoE) IEEE802.3af Class 2, 3.84W-6.49W
- Dimensions: 220.5 mm (L) x 192.5 mm (W) x 76.0 mm (H) (with handset)
- Weight: Unit weight: 0.8 kg
- Operating Temperature & Humidity: Operation: 0°C to 40°C; Storage: -10°C to 60°C; Humidity: 10% to 90% non-condensing
Key Features
- Gigabit Network Speeds: Equipped with dual-switched auto-sensing 10/100/1000 Mbps Ethernet ports to maximise connection speeds and overall call quality.
- Dedicated BLF Keys: Features 8 dual-colour BLF / speed-dial keys, allowing users to easily monitor extension status, presence, and quickly transfer calls.
- High-Definition Audio: Incorporates HD wideband audio support on both the handset and full-duplex speakerphone, complemented by advanced acoustic echo cancellation for crystal-clear communication.
- Robust Security Protection: Utilises enterprise-grade security encryption technologies including TLS, SRTP, HTTPS, and 256-bit AES encrypted configuration files to protect calls and accounts.
- Flexible Automated Provisioning: Supports various mass-deployment options including zero-configuration pairing with Grandstream’s UCM series IP PBXs, encrypted XML files, and TR-069.
- Customisable Interface: Includes 3 XML programmable context-sensitive soft keys and multi-language support to suit diverse user preferences and office workflows.







