📞 IP Voice Telephony

Grandstream IP Voice Telephony

Carrier-grade GRP, high-end GXP, Wi-Fi cordless WP and hotel GHP IP phones — HD audio, colour displays, PoE, Gigabit Ethernet, Bluetooth and free GDMS cloud provisioning for deployments of any size.

38

Phone Models

HD

Audio Quality

GDMS

Cloud Provisioning

PoE

Powered

A Grandstream SIP Phone for Every Desk

GRP Essential Series (GRP2601, GRP2602, GRP2603, GRP2604) — Affordable carrier-grade phones built for mass, zero-touch deployment with up to 6 SIP accounts, 5-way conferencing and swappable faceplates.

GRP Professional Series (GRP2610–GRP2616, GRP2624, GRP2634, GRP2636, GRP2650, GRP2670) — Colour-display phones with up to 14 lines, Wi-Fi 6, Bluetooth, USB and 5″/7″ screens for power users.

GXP Enterprise Series (GXP1610–GXP1630 basic, GXP2130–GXP2170 high-end) — Proven business phones with Gigabit, Bluetooth, USB, BLF keys and expansion-module support.

Wi-Fi, Hotel & Modules — WP cordless Wi-Fi phones (WP810–WP856), GHP hotel phones (GHP610/620/630 families) and GBX20 / GXP2200EXT extension modules for hospitality, warehousing, healthcare and busy receptions.

Browse All Grandstream IP Phones

Professional · GRP
Grandstream GRP2610 IP Phone

Grandstream GRP2610

2-line carrier-grade phone with 2.4″ colour LCD and 16 multi-purpose keys; PoE on GRP2610P.

2 Lines 2.4" Colour PoE
Professional · GRP
Grandstream GRP2611G IP Phone

Grandstream GRP2611G

3-line phone with 2.8″ colour LCD, 24 MPKs and dual Gigabit Ethernet ports.

3 Lines Gigabit 2.8" Colour
Professional · GRP
Grandstream GRP2612 (P/W/G) IP Phone

Grandstream GRP2612 (P/W/G)

4-line phone, 2.4″ colour LCD, 4 SIP accounts; PoE, Wi-Fi and Gigabit variants.

4 Lines Wi-Fi Gigabit
Professional · GRP
Grandstream GRP2613 (W) IP Phone

Grandstream GRP2613 (W)

6-line phone, 2.8″ colour LCD, 24 VPKs; Wi-Fi 6 & Bluetooth on GRP2613W.

6 Lines Wi-Fi 6 2.8" Colour
Professional · GRP
Grandstream GRP2614 IP Phone

Grandstream GRP2614

4-line phone with dual colour displays (2.8″ + 2.4″ side screen) and Gigabit.

4 Lines Dual Screen Gigabit
Professional · GRP
Grandstream GRP2615 IP Phone

Grandstream GRP2615

10-line phone, 4.3″ colour LCD, USB and GBX20 extension-module support.

10 Lines 4.3" Colour USB
Professional · GRP
Grandstream GRP2616 IP Phone

Grandstream GRP2616

6-line phone with 4.3″ + 2.4″ dual colour LCD, Wi-Fi, Bluetooth and USB.

6 Lines Bluetooth Dual Screen
Professional · GRP
Grandstream GRP2624 IP Phone

Grandstream GRP2624

8-line phone, 2.4″ colour LCD, Wi-Fi 6, Bluetooth and GBX20 support.

8 Lines Wi-Fi 6 Bluetooth
Professional · GRP
Grandstream GRP2634 IP Phone

Grandstream GRP2634

8-line phone, 2.8″ colour LCD, Wi-Fi 6, Bluetooth and USB headset support.

8 Lines Wi-Fi 6 USB
Professional · GRP
Grandstream GRP2636 IP Phone

Grandstream GRP2636

12-line phone with 2.8″ primary + 2.4″ secondary colour displays and 40 MPKs.

12 Lines Dual Screen Wi-Fi 6
Professional · GRP
Grandstream GRP2650 IP Phone

Grandstream GRP2650

14-line flagship with 5″ 1280×720 colour LCD, Wi-Fi, Bluetooth and 56 MPKs.

14 Lines 5" Display Wi-Fi 6
Professional · GRP
Grandstream GRP2670 IP Phone

Grandstream GRP2670

12-line phone with a 7″ capacitive touchscreen, Wi-Fi 6, Bluetooth and USB.

12 Lines 7" Touch Wi-Fi 6
Essential · GRP
Grandstream GRP2601 (P/W) IP Phone

Grandstream GRP2601 (P/W)

2-line essential phone, 132×48 LCD, 2 SIP accounts; PoE (P) and Wi-Fi 6 (W) options.

2 Lines PoE Wi-Fi
Essential · GRP
Grandstream GRP2602 (P/W/G) IP Phone

Grandstream GRP2602 (P/W/G)

2-line phone with 4 SIP accounts and backlit LCD; PoE, Wi-Fi 6 and Gigabit variants.

4 SIP Wi-Fi 6 Gigabit
Essential · GRP
Grandstream GRP2603 (P) IP Phone

Grandstream GRP2603 (P)

3-line phone, up to 6 SIP accounts, 132×64 backlit LCD with dual Gigabit ports.

3 Lines 6 SIP Gigabit
Essential · GRP
Grandstream GRP2604 (P) IP Phone

Grandstream GRP2604 (P)

3-line phone, up to 6 SIP accounts, backlit LCD, Gigabit and PoE on GRP2604P.

3 Lines 6 SIP PoE
High-End · GXP
Grandstream GXP2130 v2 IP Phone

Grandstream GXP2130 v2

3-line phone, 2.8″ colour LCD, Bluetooth, dual Gigabit and 8 BLF/speed-dial keys.

3 Lines Bluetooth 8 BLF
High-End · GXP
Grandstream GXP2135 IP Phone

Grandstream GXP2135

4-line phone, 2.8″ colour LCD, Bluetooth, Gigabit and 32 BLF keys.

4 Lines Bluetooth 32 BLF
High-End · GXP
Grandstream GXP2140 IP Phone

Grandstream GXP2140

4-line phone, 4.3″ colour LCD, Bluetooth, USB and dual Gigabit Ethernet.

4 Lines 4.3" Colour USB
High-End · GXP
Grandstream GXP2160 IP Phone

Grandstream GXP2160

6-line phone, 4.3″ colour LCD, 24 BLF keys, Bluetooth, USB and Gigabit.

6 Lines 24 BLF USB
High-End · GXP
Grandstream GXP2170 IP Phone

Grandstream GXP2170

6-line flagship, 4.3″ colour LCD, 48 BLF keys, Bluetooth, USB and Gigabit.

6 Lines 48 BLF Bluetooth
Basic · GXP
Grandstream GXP1610/1615 IP Phone

Grandstream GXP1610/1615

1-line entry SIP phone, 132×48 graphical LCD; integrated PoE on GXP1615.

1 Line Entry PoE
Basic · GXP
Grandstream GXP1620/1625 IP Phone

Grandstream GXP1620/1625

2-line SIP phone, 132×64 backlit LCD; integrated PoE on GXP1625.

2 Lines Backlit PoE
Basic · GXP
Grandstream GXP1628 IP Phone

Grandstream GXP1628

2-line Gigabit SIP phone, 132×64 backlit LCD, PoE and 8 BLF keys.

2 Lines Gigabit 8 BLF
Basic · GXP
Grandstream GXP1630 IP Phone

Grandstream GXP1630

3-line Gigabit SIP phone, 132×64 backlit LCD with 24 BLF/speed-dial keys.

3 Lines Gigabit 24 BLF
Wi-Fi · WP
Grandstream WP810 IP Phone

Grandstream WP810

Basic cordless Wi-Fi phone, 1.8″ colour LCD, dual-band 802.11ac and 6-hr talk time.

Cordless Dual-Band HD Voice
Wi-Fi · WP
Grandstream WP816 IP Phone

Grandstream WP816

Cordless Wi-Fi 6 phone, 2.4″ colour LCD, Bluetooth and AI noise reduction.

Wi-Fi 6 Bluetooth Cordless
Wi-Fi · WP
Grandstream WP820 IP Phone

Grandstream WP820

Cordless Wi-Fi phone, 2.4″ colour LCD, Bluetooth and 7.5-hr talk time.

Cordless Bluetooth 2.4" Colour
Wi-Fi · WP
Grandstream WP822 IP Phone

Grandstream WP822

Cordless Wi-Fi phone with dual-band 802.11ac, fast roaming and HD voice.

Cordless Dual-Band HD Voice
Wi-Fi · WP
Grandstream WP825 IP Phone

Grandstream WP825

Cordless Wi-Fi phone, colour LCD, Bluetooth and 802.11k/v/r fast roaming.

Cordless Bluetooth Roaming
Wi-Fi · WP
Grandstream WP826 IP Phone

Grandstream WP826

Cordless Wi-Fi 6 phone, 2.8″ colour LCD, 12-hr talk time and AI noise reduction.

Wi-Fi 6 12-hr Talk Bluetooth
Wi-Fi · WP
Grandstream WP836 IP Phone

Grandstream WP836

Rugged cordless Wi-Fi 6 phone with accelerometer, fast roaming and AI noise reduction.

Wi-Fi 6 Rugged Cordless
Wi-Fi · WP
Grandstream WP856 IP Phone

Grandstream WP856

Android Wi-Fi 6 smartphone, 5.5″ touchscreen, NFC, barcode scanner and IP65 rating.

Android Wi-Fi 6 Touchscreen
Expansion
Grandstream GBX20 Extension Module IP Phone

Grandstream GBX20 Extension Module

Extension module for GRP series with 20 dual-colour keys and 40 contacts; stack up to 4 (160 keys).

20 Keys GRP Series BLF
Expansion
Grandstream GXP2200EXT Extension Module IP Phone

Grandstream GXP2200EXT Extension Module

Extension module for GXP2140/2160/2170 with 20 dual-colour BLF keys and LCD; daisy-chain up to 4.

20 BLF GXP Series Daisy-Chain
Hotel · GHP
Grandstream GHP610(W) & GHP611(W) IP Phone

Grandstream GHP610(W) & GHP611(W)

Compact hotel IP phone, 2 SIP accounts, 3 programmable keys, 3-way conference; Wi-Fi on W models.

Hotel 2 SIP Wi-Fi
Hotel · GHP
Grandstream GHP620(W) & GHP621(W) IP Phone

Grandstream GHP620(W) & GHP621(W)

Hotel IP phone, 2 SIP accounts, 6 programmable + 10 speed-dial keys; Wi-Fi on W models.

Hotel Speed-Dial Wi-Fi
Hotel · GHP
Grandstream GHP630(W) & GHP631(W) IP Phone

Grandstream GHP630(W) & GHP631(W)

Hotel IP phone, 2 SIP accounts, 6 keys, 10 speed-dial, USB-C; dual-band Wi-Fi 6 on W models.

Hotel Wi-Fi 6 USB-C

Benefits of Grandstream IP Phones

🔔

Crystal-Clear HD Audio

Wideband HD audio with noise-shield and AI noise reduction for clear calls in busy environments.

☁️

Free GDMS Provisioning

Zero-touch cloud deployment, monitoring and firmware management for whole fleets via Grandstream GDMS.

🔒

Carrier-Grade Security

Secure boot, dual firmware images, encrypted storage and unique per-device certificates and passwords.

🔗

Broad Interoperability

Standard SIP compatibility with UCM, Asterisk, 3CX, Epygi and most third-party PBX and softswitch platforms.

Why Choose Grandstream IP Voice Telephony in India?

Grandstream is one of the world's most widely deployed manufacturers of SIP voice endpoints, with more than 20 years of experience building IP phones for enterprises, service providers and hospitality. Its IP Voice Telephony portfolio spans the carrier-grade GRP series, the enterprise GXP series, WP Wi-Fi cordless phones, GHP hotel phones and extension modules — giving organisations a single, interoperable platform that scales from a two-line reception phone to a 14-line executive desk.

Every model delivers full-duplex HD audio, broad SIP interoperability and free cloud management through Grandstream's Device Management System (GDMS), which lets IT teams provision, monitor and update thousands of devices in true zero-touch fashion. From the affordable GRP2601 and GXP1610 right up to the GRP2670 with its 7″ capacitive touchscreen or the Android-powered WP856 Wi-Fi smartphone, there is a Grandstream phone engineered for every role and budget.

Complete Telephony for Every Industry

Whether you are equipping a corporate headquarters with high-end GXP and professional GRP phones, a hotel with the purpose-built GHP hospitality range, a warehouse or hospital with rugged WP Wi-Fi handsets, or a call centre with GBX20 / GXP2200EXT busy-lamp-field expansion modules, Grandstream has a fit. As an authorized Grandstream distributor, Cohesive Technologies offers expert consultation, genuine stock, competitive pricing and nationwide delivery across India, Sri Lanka, Nepal and the Maldives, backed by full technical support.

Grandstream IP Voice Telephony — Frequently Asked Questions

What is Grandstream IP Voice Telephony?+
Grandstream IP Voice Telephony is the company's complete range of SIP desk and wireless phones. It includes the GRP carrier-grade series (Essential and Professional), the GXP enterprise series (Basic and High-End), WP Wi-Fi cordless phones, GHP hotel phones, and GBX20/GXP2200EXT extension modules — all supporting HD audio and centralized GDMS cloud provisioning.
What is the difference between Grandstream GRP and GXP IP phones?+
The GRP series is Grandstream's newer carrier-grade line built for mass deployment with zero-touch GDMS provisioning, swappable faceplates and unified firmware. The GXP series is the established enterprise line, with GXP1600 basic models and GXP2100 high-end models featuring colour displays, Bluetooth and USB. Both support HD audio and major SIP/PBX platforms.
Do Grandstream IP phones support PoE and Gigabit Ethernet?+
Yes. Most Grandstream desk phones support Power over Ethernet (PoE 802.3af) so a single Ethernet cable supplies both power and data. Higher models such as the GRP2603/2604, GRP2611G and GXP2135/2140/2160/2170 add dual Gigabit (10/100/1000 Mbps) Ethernet ports.
Does Grandstream make Wi-Fi cordless and hotel phones?+
Yes. The Grandstream WP series (WP810, WP816, WP820, WP822, WP825, WP826, WP836, WP856) are dual-band Wi-Fi cordless IP phones with roaming and long battery life. The GHP series (GHP610/611, GHP620/621, GHP630/631) are purpose-built hotel phones with speed-dial keys, swappable faceplates and optional Wi-Fi.
Are Grandstream phones compatible with third-party PBX platforms?+
Yes. Grandstream IP phones use standard SIP and offer broad interoperability with most third-party SIP/NGN/IMS platforms, including Grandstream UCM, Asterisk, 3CX, Epygi, FreeSWITCH and most major service-provider softswitches.
Where can I buy Grandstream IP phones in India?+
Cohesive Technologies is an authorized Grandstream distributor in India with genuine stock, competitive pricing, expert consultation and nationwide delivery across India, Sri Lanka, Nepal and the Maldives. Call +91 120 4830000 or email info@cohesiveglobal.com.

Upgrade Your Business Telephony with Grandstream

Authorized distributor · HD audio · Free GDMS provisioning · Best price in India · Free consultation · Nationwide delivery