SKU: 79497758592

Grandstream Expansion Module for GRP2615,GRP2624,GRP2650,GRP2670,GXV3350,GXV3450

Sale price$1174.93 Regular price$1305.48
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Grandstream Expansion Module for GRP2615,GRP2624,GRP2650,GRP2670,GXV3350,GXV3450Supercharge Your Communication Hub Unlock the full potential of your Grandstream IP phone with the GBX20 Expansion Module, the ultimate solution for managing high call volumes with unparalleled efficiency. Designed for receptionists, executives, and busy professionals, this module transforms your desk phone into a powerful command center. Featuring a vibrant 4. 3 inch color LCD display, the GBX20 provides a clear, intuitive interface for all your

Supercharge Your Communication Hub

Unlock the full potential of your Grandstream IP phone with the GBX20 Expansion Module, the ultimate solution for managing high call volumes with unparalleled efficiency. Designed for receptionists, executives, and busy professionals, this module transforms your desk phone into a powerful command center. Featuring a vibrant 4.3-inch color LCD display, the GBX20 provides a clear, intuitive interface for all your communication needs.

Expand Your Reach

Effortlessly handle more calls and contacts. The GBX20 adds 20 dual-colored programmable extension keys per page, and with two pages available, you get 40 additional lines per module. For businesses with growing demands, you can daisy-chain up to four modules to access a staggering 160 new contacts and extensions. This scalability ensures that your phone system grows with your business.

Advanced Call Handling at Your Fingertips

The GBX20 supports a wide array of advanced call features to streamline your workflow. Instantly see who is available with Busy Lamp Field (BLF), manage calls with call park/pickup, and connect faster with speed dial. Additional features like presence, intercom, and conference transfer/forward put you in complete control of your communications, ensuring maximum productivity.

Seamless Integration

The GBX20 is designed for plug-and-play simplicity and is compatible with a range of Grandstream's Carrier-Grade IP Phones and IP Video Phones, including the GRP2615, GRP2624, GRP2650, GRP2670, GXV3350, and GXV3450 models. A single module can be powered directly by the host phone; for two or more modules, a dedicated power supply is included to ensure reliable performance.

Technical Specifications
Display 4.3 inch (272x480) TFT color LCD
Programmable Keys 20 per page with 2 pages for up to 40 lines/contacts per module
Maximum Scalability Up to 160 contacts/extensions by connecting 4 daisy-chained modules
Compatible Grandstream Phones GRP2615, GRP2624, GRP2650, GRP2670, GXV3350, GXV3450
Supported Features BLF, call park/pick-up, speed-dial, presence, intercom, voice conferencing, transfer/forward and more
Power A single GBX20 can be powered by the host phone. When 2 or more are connected, an included 12V/1A PSU is required.
Firmware Upgrades Upgraded via direct network download through the host phone's network connection.
Physical Dimensions 210mm x 124mm x 33.5mm
Weight Unit: 360g, Package: 700g
Package Contents GBX20 Extension Module, Base Stand, Extension Board Connector Plate, Screws, USB Cable
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79497758592

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 1074 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mark C.
Lowell, US
★★★★★ 5
Comfy, thick, bottoms slick enough to wipe clean easily
Color: Long Black, Size: 10-13
Comfy, thick, bottoms easy to wipe clean . Would buy again. A little hot if anything.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2025
T
Verified Purchase
Timmer
Belleville, US
★★★★★ 5
Perfect to where around the house
Color: Long Navy, Size: 7-9.5
They worked perfectly. They fit very well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
A
Verified Purchase
avalancheryder
Chelsea, US
★★★★★ 5
Absolute game changer for chronically dry feet/cracked heels
Size: S (up to size 7)-Beige
I had recently bought a pair of silicone heel/ankle wraps to fill out my boot a little since I noticed my heels were lifting when I was skating. I tested them out around the house and noticed they left my heels softer while the rest of my sockless feet got quite dry. So I got these full foot silicone socks to see the effect of having my whole foot covered. I slather the entirety of my feet with Dr. Scholl's Severe Cracked Heel Restoring Balm (love how convenient it is to apply it to my feet with the solid stick form) and then slip them into these silicone socks. After just a couple hours, when I pull out my feet they're (a teeny bit sweaty at first), but then overall soft and smooth and have absorbed the balm fully leaving barely any residue in the silicone sock. I find these silicone socks generally comfortable; I wear them in the evenings while relaxing on the couch, take them off after a couple hours and let my feet breathe a bit, and then reapply my balm and socks and wear them to bed. If I wake up in the middle of the night, which I almost always do (not because of the socks), I'll take the socks off and allow my feet to breathe again. I wear a woman's size 6 shoe and the small size is pretty comfortable. However, I made the mistake of wearing them while being on my feet for a couple hours straight during household chores -- they must've somehow cut off my circulation a bit with the standing, so I wouldn't recommend wearing these silicone socks while being active. And since they're not exactly my foot size, they slide around sometimes and will start to feel tight at my big toe. But if that happens, I just tug on the toe area of the sock to give my big toe more wiggle room and problem solved. Prior to wearing these socks, I was soaking and doing heavy duty exfoliation of my feet every week. These socks seem like they'll work to help me extend the time between soakings and exfoliations. The 5 pack is a great value. So far none have torn, so they seem rather durable. Not sure what I could even do to tear a hole in these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
B
Verified Purchase
Beverly Durham
Pawtucket, US
★★★★★ 5
Works wonders
Size: M (up to size 9)-Beige
Works wonders for dry feet, like really dry, hard feet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
T
Verified Purchase
Therapy by the Sea
Belleville, US
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?: I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them. The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025

recommand products