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Grandstream GBX20 Extension Module

Price:

$ 186.25


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Grandstream GBX20 Extension Module

https://arcip.com.au/web/image/product.template/3448/image_1920?unique=263d830

Grandstream GBX20 extension module with 4.3-inch 480 x 272 colour LCD. 20 keys per page, 2 pages, up to 40 contacts per module and up to 160 with 4 daisy-chained modules. Supports BLF, call park/pick-up, speed dial, presence, intercom, conferencing, transfer and forward. Compatible with GRP2615, GRP2624, GRP2650, GRP2670, GXV3350 and GXV3450. Powered by the host phone (12 V PSU for 2 or more modules). Genuine Grandstream from ARC IP Networks, authorised Grandstream reseller with Australian stock.

$ 186.25 186.25 AUD $ 186.25 incl. GST

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Grandstream
  • Stock

    Authorised Australian Reseller | Australian Stock | Genuine Local Warranty

  • Instalment
    Buy Now, Pay Later 
  • [Warranty Information] Warranty
    Manufacturer Warranty 
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Shipping calculated at checkout
Estimate delivery times: 3-7 business days 
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Accepted payments: Google Pay, Apple Pay, Visa, Mastercard and PayPal
SKU
GBX20
Barcode
6947273702931
Tags

Grandstream GBX20 at a glance

The Grandstream GBX20 is a 4.3-inch colour LCD extension module for Grandstream's GRP2615, GRP2624, GRP2650 and GRP2670 IP phones and GXV3350/GXV3450 video phones. Each module provides 20 keys per page across 2 pages for up to 40 contacts, and up to 4 modules can be daisy-chained for 160 contacts with BLF, speed dial, call park and more.

ARC IP Networks is an authorised Grandstream reseller in Australia. We supply the Grandstream GBX20 from Australian stock.

Display4.3-inch 480 x 272 colour
Keys40 per module (2 pages)
Daisy chainUp to 4 modules / 160
Works withGRP2615/2624/2650/2670, GXV3350/3450

Best for

  • Receptionists and operators handling high call volumes
  • Busy-lamp-field monitoring of colleagues' extensions
  • Adding speed-dial and call-park keys to GRP2615/GRP2650/GRP2670 phones

Key features

4.3-inch 480 x 272 TFT colour LCD.

20 keys per page with 2 pages, for up to 40 contacts per module.

Up to 160 contacts using 4 daisy-chained modules.

Supports BLF, call park/pick-up, speed dial, presence, intercom, conferencing, transfer and forward.

Compatible with GRP2615, GRP2624, GRP2650, GRP2670, GXV3350 and GXV3450.

A single module is powered by the host phone; a 12 V PSU is needed when 2 or more modules are connected.

Firmware is upgraded through the host phone's network connection.

Includes base stand, connector plate, screws and USB cable.

Grandstream GBX20 specifications

Grandstream GBX20 technical specifications
SpecificationValue
Display & Keys
Display4.3-inch (480 x 272) TFT colour LCD
Lines20 per page, 2 pages, up to 40 per module
MaximumUp to 160 with 4 daisy-chained modules
Compatibility
Host phonesGRP2615, GRP2624, GRP2650, GRP2670, GXV3350, GXV3450
FeaturesLocal GUI driven from host phone; multiple line/call appearances
Power & Firmware
PowerSingle module powered by host phone; 12 V PSU needed for 2 or more modules
FirmwareUpgraded via the host phone's network connection
Physical & Environment
Dimensions210 x 124 x 33.5 mm
WeightUnit 360 g; package 700 g
Operating temperature0 °C to 40 °C
ComplianceFCC, IC, CE, RCM

Figures from Grandstream's official product information.

What's in the box

  • GBX20 extension board
  • Base stand
  • Extension board connector plate
  • Screws
  • USB cable
  • Quick Installation Guide

The Grandstream GBX20 in depth

More keys for busy desks

The GBX20 adds a 4.3-inch colour screen with 40 programmable contacts to compatible Grandstream phones, so receptionists and team leaders can see line status and dispatch calls at a glance.

Scales to 160 contacts

Up to 4 modules can be daisy-chained for 160 contacts. One module runs from the host phone, and a 12 V power supply is used when 2 or more are connected.

Frequently asked questions

Straight answers about the Grandstream GBX20 from the ARC IP Networks team. Last reviewed October 2026.

The Grandstream GRP2615, GRP2624, GRP2650 and GRP2670 IP phones and the GXV3350 and GXV3450 video phones.

20 keys per page across 2 pages, for up to 40 contacts per module and up to 160 with 4 modules.

A single GBX20 is powered by the host phone. When 2 or more modules are connected, a 12 V PSU is needed.

GBX20 firmware is upgraded by direct network download through the host phone's network connection and firmware upgrade settings.

ARC IP Networks is an authorised Grandstream reseller and supplies the GBX20 from Australian stock.

Explore more Grandstream: Grandstream in Australia · Grandstream

Buy the Grandstream GBX20 in Australia

ARC IP Networks is an authorised Grandstream reseller, supplying Grandstream products to homes, businesses and integrators across Australia.

  • Genuine Grandstream with the full manufacturer's warranty.
  • Australian stock, shipped Australia-wide.
  • Local pre-sales help choosing the right model.
  • Trade and project pricing available.

Need help choosing Grandstream?

Ask ARC IP Networks for project pricing or a quote, or call us to check the right Grandstream model for your site.

Brand Grandstream

Accurate Shipping Costs

Our online shipping calculator is designed to provide a final, accurate shipping cost based on the items in your cart and your delivery postcode. Shipping costs are calculated at checkout based on your order and delivery postcode. The final cost is calculated based on several factors which are automatically accounted for by our system, including:

  • The stock location of the item(s) across our warehouses.
  • Orders with multiple items that may require special packaging.
  • The weight and dimensions of the order (including heavy or oversized items).
  • The delivery courier servicing your specific region.

Delivery Times


 

Standard Processing


Most orders placed by 2pm AEDT are dispatched for next working day delivery. Larger orders may require 1-2 additional business days for processing. If timing is critical, please contact us to discuss expedited options (additional charges may apply).


Delivery Timeframes


Region

Processing Time

Express Delivery

Standard Delivery

VIC, NSW, SA, QLD Metro, TAS

1-2 business days

1-2 business days

2-4 business days

NT, WA, QLD Rural

1-2 business days

1-2 business days

3-5 business days

New Zealand

1-2 business days

2-3 business days

4-10 business days

Please note: Processing times may extend during peak periods such as Christmas and end of financial year.

Free Warehouse Pickup



Save on shipping costs with free pickup from our ARC IP Networks Blackburn warehouse. Simply place your order online or by phone, and collect during business hours (Monday to Friday). Please allow time for picking and packing. For urgent orders, call 1300 100 440 to confirm your order is ready.

ARC IP Networks Pickup Address: 6 George Street, Blackburn, VIC 3130


Insurance & Tracking



All ARC IP Networks shipments are fully insured and trackable. Once dispatched, you'll receive an email with your tracking number and courier website details. If your item is confirmed lost or damaged by our courier, we'll arrange a replacement in consultation with you.


International Shipping



ARC IP Networks ships to New Zealand. Please note:


  • Import duties and taxes vary by country
  • Buyers are responsible for all customs charges
  • Contact your local customs authority before ordering
  • We'll provide required documentation for smooth customs clearance
  • Buyers cover all shipping costs for returns due to refused duties/taxes


Delivery Requirements


Signature Required


All deliveries must be signed for. If you won't be home, contact our Sales Support team to arrange Authority to Leave. Important: Authority to Leave voids shipping insurance if parcels are lost or stolen.


Delivery Restrictions


We do not deliver to PO Boxes or Parcel Lockers as our couriers cannot access them. Orders sent to these addresses will be returned, incurring redelivery fees.


Shipping Issue Resolution


ARC IP Networks works closely with our shipping partners to resolve any delivery issues quickly and fairly:


  1. Confirmation: We verify expected delivery dates with our shipping partners
  2. Investigation: Issues outside normal timeframes trigger formal investigations
  3. Communication: We keep you updated throughout the resolution process
  4. Resolution: Confirmed lost items are replaced or refunded after investigation completion


Please note: Refunds for lost, missing, or delayed orders cannot be processed until shipping partner investigations are complete. This does not affect your rights under the Australian Consumer Law, and refunds or replacements will be provided where required once loss or damage is confirmed.

Warranty & Faulty Products

ARC IP Networks complies with the Australian Consumer Law (ACL).

If a product is faulty, damaged, not of acceptable quality, or does not perform as advertised, you are entitled to a repair, replacement, or refund in accordance with ACL.

Manufacturer Warranty Returns

For faults developing after 14 days within the warranty period:

  • Contact ARC IP Networks first at info@arcip.com.au or 1300 100 440
  • We will assess the issue and coordinate with manufacturers, authorised service centres, or distributors on your behalf
  • Where required, a manufacturer RMA may be arranged
  • ARC IP Networks manages the return process and next steps

Dead on Arrival (DOA)

Products that arrive faulty or damaged must be reported within 14 days of delivery.

ARC IP Networks will arrange assessment, replacement, or refund as appropriate.

Change of Mind & Non-Faulty Returns

Change-of-mind returns must be requested within 14 days of delivery. For change-of-mind returns, the product must be unused, unopened, in its original packaging, and returned with all accessories and documentation. These conditions apply only to change-of-mind returns and do not limit or exclude your rights under the Australian Consumer Law. Some products are not eligible for change-of-mind returns, including:

  • Ex-demo products
  • Clearance or markdown items
  • Special-order items
  • Products clearly marked “No Change-of-Mind Returns”

Important

This does not affect your rights under Australian Consumer Law.

If a product is faulty, not of acceptable quality, or does not meet advertised specifications, it remains eligible for return regardless of category.

Refunds & Processing Timeframes

  • Approved refunds are processed within 7 business days of receiving returned goods
  • Refunds are issued to the original payment method, unless otherwise agreed
  • Replacement or repair may be offered where appropriate
  • Store credit may be offered only with customer consent

Handling fees and non-returnable service charges may not be refundable where permitted by law.


Restocking Fees

For approved change-of-mind or non-faulty returns, a 15% restocking fee applies.

  • Any applicable restocking fee will be clearly communicated prior to return approval
  • The fee will be deducted from the refund amount
  • Restocking fees do not apply to returns made under the Australian Consumer Law, including faulty, damaged, or misrepresented goods.

Return Shipping Costs

  • Change-of-mind returns: The customer is responsible for return shipping costs.
  • Faulty or defective products: ARC IP Networks covers return shipping under Australian Consumer Law.

Non-Warranty Repairs

For issues not covered by warranty:

  • ARC IP Networks will provide a quote before proceeding
  • Customers are responsible for all shipping and service costs
  • No repairs are undertaken without customer approval

Return Methods

Returns may be made:

  • In-store at ARC IP Networks – 6 George Street, Blackburn VIC 3130
  • Or by shipment as instructed by our support team

Proof of purchase is required for all returns.

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