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GRP Essential Series

Grandstream GRP2603 (P)

3-Line Essential IP Phone with Gigabit

The Grandstream GRP2603 is an essential 3-line carrier-grade IP phone supporting up to 6 SIP accounts, with a 132×64 backlit graphical LCD, HD audio, dual Gigabit ports, 5-way conferencing and a swappable face plate. The GRP2603P adds PoE.

3 Lines / 6 SIP

More capacity

Gigabit Ethernet

Fast wired networking

Backlit LCD

Clear graphical display

Swappable Faceplate

Easy branding

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3
Lines
6
SIP
GigE
Ports
HD
Audio
Technical Features

Built for Professional Communication

The GRP2603 (P) is packed with features engineered for reliability, security and everyday productivity.

Gigabit Ethernet

Dual switched auto-sensing 10/100/1000 Mbps ports for fast, reliable network integration

HD Audio

Crystal-clear wideband HD voice with noise-shield technology on handset and speakerphone

Power over Ethernet

The GRP2603P supports PoE — a single cable can deliver both network and power

5-Way Conferencing

Built-in 5-way audio conferencing for productive team calls

Enterprise Security

Secure boot, dual firmware images and encrypted storage with TLS/SRTP

Swappable Faceplate

Customisable face plate for easy branding and logo personalisation

GDMS Cloud Management

Zero-touch provisioning, monitoring and remote management via Grandstream GDMS

Frequently Asked Questions

Grandstream GRP2603 (P) — Common Questions

Everything you need to know about the Grandstream GRP2603 (P) before you buy.

The Grandstream GRP2603 is an essential 3-line carrier-grade IP phone supporting up to 6 SIP accounts, with a 132×64 backlit graphical LCD, HD audio, dual Gigabit ports, 5-way conferencing and a swappable face plate. The GRP2603P adds PoE. It suits everyday workers who need more lines and accounts in an affordable, easy-to-deploy phone.
The GRP2603 (P) supports 3 lines and up to 6 SIP accounts, with each account offering independent SIP server, user and NAT settings.
The GRP2603 (P) features a 132×64 (2.48-inch) backlit graphical LCD.
The GRP2603P supports PoE, so a single Ethernet cable can carry both data and power to simplify installation.
Yes — the GRP2603 (P) supports zero-touch provisioning and Grandstream's GDMS cloud platform, making mass deployment and remote management straightforward.
Yes — the Grandstream GRP2603 (P) is available in India through Cohesive Technologies, an authorised national distributor of Grandstream IP telephony. Request pricing at sales@cohesiveglobal.com or visit cohesiveglobal.com.