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�� Product Description The Grandstream GRP2603 is a carrier-grade 3-line IP phone designed for mass deployment and easy centralized management. It is ideal for businesses, service providers, and remote workers who require reliable and cost-effective VoIP communication. The GRP2603 supports 3 lines and 6 SIP accounts, enabling efficient call handling for busy office environments. ⭐ Key Features �� 3 Lines & 6 SIP Accounts – Manage multiple calls efficiently �� HD Audio Full-Duplex Speakerphone – Crystal-clear voice quality �� 5-Way Audio Conferencing – Enhance collaboration �� Dual Gigabit Ethernet Ports – High-speed connectivity ☁️ GDMS Cloud Management – Centralized provisioning & monitoring �� EHS Headset Support – Compatible with major headset brands �� Enterprise-Grade Security – Secure boot, encrypted storage �� Customizable Faceplates – Branding flexibility ⚡ External Power Supply (No PoE) – Ideal where PoE is not required �� Technical Specifications Feature Details Lines 3 Lines SIP Accounts 6 Accounts Display 2.48”–2.7” backlit LCD (132×64) Conferencing 5-way audio Network Ports Dual Gigabit Ethernet PoE ❌ Not supported Audio HD Audio, Full-duplex speaker Headset Support RJ9 EHS Management GDMS Cloud Security Secure boot, encrypted data �� Use Cases Small and medium businesses Call centers and customer service desks VoIP service providers Enterprise deployments Remote and hybrid office setups �� Useful Links �� Official Product Page: https://www.grandstream.com/products/ip-voice-telephony-carrier-grade-ip-phones/grp-series-essential-ip-phones/product/grp2603p �� Datasheet (PDF): https://www.grandstream.com/hubfs/Product_Documentation/Datasheet_GRP2603_English.pdf �� GDMS Cloud Platform: https://gdms.cloud SKU: GRP2603 Category: GRP-Series Brand: Grandstream