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Grandstream GXP1628
| Type | Entry-level Gigabit IP desk phone |
| SIP Accounts | 2 SIP accounts |
| Lines | 2 lines (2 call appearances) |
| Display | 2.95" backlit LCD (132 × 48 pixels) |
| Audio | HD audio (handset & speakerphone), full-duplex, echo cancellation |
| Conferencing | 3-way audio conferencing |
| Network Interfaces | 2 × Gigabit Ethernet ports (10/100/1000 Mbps) | Integrated PoE support (IEEE 802.3af) |
| Headset Support | RJ9 + EHS (Plantronics compatible) |
| Security | TLS, SRTP, HTTPS, 802.1x, encrypted configuration files |
| Call History | Up to 200 records |