| Technical Specifications – Grandstream GRP2624 |
| Model | GRP2624 |
| Device Type | Carrier‑Grade IP Media Phone |
| SIP Accounts / Lines | 8 SIP accounts |
| Display | 2.8″ Color (320×240) LCD |
| Feature Keys | 8 programmable SIP keys with LED |
| Additional Keys | Navigation D‑pad, soft keys, function keys |
| Audio | HD Audio, full duplex speakerphone |
| Headset Support | RJ9 wired, EHS (Plantronics, Jabra, Sennheiser) |
| Network Interfaces | Dual 10/100 Mbps Ethernet |
| PoE Support | Yes (GRP2624P, IEEE 802.3af) |
| Wi‑Fi Support | No |
| Audio Conferencing | 5‑way voice conferencing |
| Voice Codecs | G.711μ/a, G.722, G.726, G.729AB, G.723.1, iLBC, OPUS |
| Telephony Features | Hold, transfer, forward, park/pickup, 3‑way calling, speed dial, call waiting, BLF/BLF list |
| Security | Secure boot, dual firmware, encrypted config, TLS, SRTP, 802.1x |
| Protocols | SIP RFC3261, TCP/IP, UDP, RTP/RTCP, HTTP/HTTPS, DNS, DHCP, LLDP‑MED, STUN, SNMP, TR‑069, IPv6 |
| Provisioning & Management | GDMS (cloud zero‑touch provisioning & centralized management) |
| Power | 5 V DC / PoE (GRP2624P) |
| Dimensions | 209 × 204 × 60 mm |
| Weight | ~760 g |
