| Technical Specifications – Grandstream GRP2670 |
| Model | GRP2670 |
| Device Type | Carrier‑Grade IP Enterprise Phone |
| SIP Accounts / Lines | 16 SIP accounts |
| Display | 4.3″ Color (480×272) LCD Touch Screen |
| Programmable Keys | 10 SIP function keys + up to 40 more via soft keys |
| Navigation Keys | Touch UI with on‑screen navigation |
| Audio | HD Audio with full‑duplex speakerphone |
| Headset Support | RJ9 wired, EHS for Plantronics, Jabra, Sennheiser |
| Ethernet | Dual 10/100/1000 Mbps LAN and PC ports |
| PoE Support | Yes (GRP2670P, IEEE 802.3af) |
| Wi‑Fi Support | Yes (GRP2670W, 2.4 GHz) |
| Audio Conferencing | 5‑way voice conferencing |
| Voice Codecs | G.711μ/a, G.722, G.726, G.723.1, iLBC, OPUS, G.729A/B |
| Telephony Features | Call hold, transfer, forward, park/pickup, BLF, call recording, speed dial |
| Security | Secure boot, dual firmware images, encrypted config, TLS, SRTP, 802.1x |
| Protocols | SIP RFC3261, TCP/IP/UDP, HTTP/HTTPS, DNS, DHCP, SNMP, LLDP‑MED, TR‑069, IPv6 |
| Provisioning & Management | GDMS cloud zero‑touch provisioning & centralized management |
| Power | 100–240 VAC → 5 VDC or PoE (GRP2670P) |
| Dimensions (W×D×H) | 240 × 220 × 53 mm |
| Weight | Approx. 1.0 kg |
