Name: Grandstream GBX20
Brand: Grandstream
Availability: InStock
Rating: 4.9 (113 reviews)

Grandstream GBX20 Overview

The Grandstream GBX20 is a professional-grade VoIP & Networking Product from Grandstream. Grandstream Networks is a leading manufacturer of IP phones, IP PBX, VoIP gateways, video conferencing, Wi-Fi networking and next-generation communication devices trusted by millions worldwide. Available in Kolkata through Call Soft Corporation — India's authorized dealer.

IP PhonesIP PBX / UCMVoIP GatewaysVideo PhonesDECT PhonesWi-Fi PhonesHotel PhonesDoor SystemsIP IntercomsWi-Fi APsNetwork Switches 📍 Kolkata ✅ Genuine Product 🛡️ Warranty

Grandstream GBX20 Services

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Grandstream GBX20 Dealer in Indian Cities

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Other Grandstream Models

GXP1610 GXP1615 GXP1620 GXP1625 GXP1628 GXP1630 GXP2130 GXP2135 GXP2140 GXP2160 GXP2170 GRP2601 GRP2601P GRP2601W GRP2602 GRP2602P GRP2602W GRP2602G GRP2603 GRP2603P View All →

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Recent Dispatch & Setup

Last Grandstream GBX20 setup verified in Kolkata: 28 Jul, 2026

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Grandstream GBX20 — India delivery available

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Customer Reviews for Grandstream GBX20

Highly rated by businesses across Kolkata.

★★★★★

"Excellent support for ViciDial installation. Very professional team."

Rajesh Kumar 20 Jul, 2026

★★★★☆

"Genuine Sangoma PRI cards. Installation was smooth and fast."

Anjali Mehta 25 Jul, 2026