| Technical Specifications – Grandstream GRP2601P |
| Model | GRP2601P |
| Device Type | Carrier‑Grade Essential IP Phone |
| SIP Accounts / Lines | 2 SIP accounts, 2 lines |
| Display | 132 × 48 2.21″ LCD Display |
| Network Interfaces | Dual switched 10/100 Mbps Ethernet |
| PoE Support | Yes (GRP2601P, IEEE802.3af) |
| Wi‑Fi Support | No |
| Feature Keys | 4 XML programmable keys, 5 navigation/menu keys, 8 dedicated function keys |
| Voice Conferencing | 5‑way audio conferencing |
| Noise Technology | Noise Shield + AI noise reduction |
| EHS Headset Support | Plantronics, Jabra, Sennheiser |
| Voice Codecs | G.711μ/a, G.722, G.726, G.723.1, iLBC, OPUS, G.729A/B |
| Telephony Features | Hold, transfer, forward, call park/pickup, call waiting, call log, LDAP/XML phonebook |
| Security | Secure boot, dual firmware images, encrypted data storage, TLS, SRTP, 802.1x |
| Protocols Supported | SIP RFC3261, TCP/IP, UDP, RTP/RTCP, HTTP/HTTPS, DNS, DHCP, PPPoE, STUN, LLDP‑MED, TR‑069, SNMP, IPv6 |
| Provisioning & Management | GDMS device management & zero‑touch provisioning |
| Power | 100‑240 VAC→5 VDC or PoE (GRP2601P) |
| Dimensions (L×W×H) | 208 × 180 × 63.4 mm (with handset) |
| Unit Weight | ~650 g (651 g for GRP2601W) |
