Grandstream GRP2603P Essential IP Phone
A carrier-grade, 3-line (6 SIP account) IP phone engineered for enterprise and service-provider environments. It includes integrated Gigabit PoE, HD audio with noise reduction, headset EHS support, swappable faceplate, and centralized provisioning via GDMS
Grandstream GRP2603P Essential IP Phone Specifications
Lines & SIP Accounts: 3 lines, 6 SIP accounts, 3 call appearances
Display: 2.48″ backlit graphical LCD (132×64 pixels)
Networking: Dual auto-sensing Gigabit Ethernet ports
PoE Support: Yes (IEEE 802.3af, Class 1)
Audio: HD audio on handset and speakerphone; full-duplex with noise shield and AI noise reduction
Conferencing: 5-way local audio conferencing
Headset Support: RJ9 port with EHS compatibility (Plantronics, Jabra, Sennheiser)
Codecs: Opus, G.711, G.722, G.723, G.726, G.729, iLBC
Telephony Features: Call hold, transfer, park, pickup, BLA/SCA, hot-desking, custom ringtones, XML/LDAP phonebook (2,000 entries), call log (800 records)
Security: Secure boot, dual firmware images, AES-256 encryption, SRTP, TLS, 802.1x
QoS Support: VLAN (802.1Q/p), DiffServ, MPLS
Provisioning & Management: Zero-touch provisioning via GDMS, TR-069, or encrypted XML; firmware upgrade via FTP/TFTP/HTTP/HTTPS
Power: PoE-powered (or external 5V DC adapter, 600mA)
Physical Dimensions: 214 × 206 × 68 mm
Weight: Approx. 780 g
Operating Conditions: 0°C to 40°C (operation), -10°C to 60°C (storage); humidity 10%–90% non-condensing
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