---
product_id: 548074923
title: "CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable"
brand: "callez"
price: "¥4441"
currency: JPY
in_stock: true
reviews_count: 1
url: https://www.desertcart.jp/products/548074923-callezrj9-telephone-training-adapter-y-splitter-for-headset-or-handset
store_origin: JP
region: Japan
---

# 19.6" Length RJ9 Compatibility Plug & Play CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable

**Brand:** callez
**Price:** ¥4441
**Availability:** ✅ In Stock

## Summary

> 📞 Connect, Collaborate, Conquer!

## Quick Answers

- **What is this?** CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable by callez
- **How much does it cost?** ¥4441 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/548074923-callezrj9-telephone-training-adapter-y-splitter-for-headset-or-handset)

## Best For

- callez enthusiasts

## Why This Product

- Trusted callez brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Just plug and play for instant connectivity.
- • **Lightweight Design:** Portable and easy to use, perfect for any workspace.
- • **Enhanced Communication:** Clear voice quality for effective training sessions.
- • **Seamless Compatibility:** Works with major brands like Cisco, Avaya, and Polycom.
- • **Dual Listening Experience:** Train or collaborate with two headsets on one phone.

## Overview

The Callez RJ9 Telephone Training Adapter Y Splitter allows two headsets to connect to a single telephone, making it ideal for training and collaborative environments. Compatible with a wide range of desk phones, this lightweight and easy-to-use splitter enhances communication clarity and efficiency.

## Description

CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable

## Features

- Compatibility Notices: The compatibility of this telephone training adapter depends on whether your RJ9 headset is compatible with your telephone. As long as your headset is compatible with your telephone, the adapter will work properly.
- Compatible Telephones: This RJ9 Y splitter is compatible with Plantronics, Mitel, Cisco, Yealink, Avaya, Polycom, BT Phones, ShoreTel, NEC, Aastra, Nortel and other IP phones.
- Easy to Use: Plug and play, can plug either into handset port or 4P4C RJ9 headset port. Allows the use of two headsets on one telephone. Allow you to setup that you can choose either handset or headset for your calls.
- Lightweight and Convenient: This phone splitter is very lightweight and provides clear voice incoming and outgoing, the cord is 19.6 inches (50cm) long. It helps with training and can also use as an extender.
- Great for Training: This is a telephone training adapter is great for landline phones with RJ9 headset jack. It can splitter into two listeners/callers same conversation simultaneous. Great suitable for business professional, call center, work from home or anywhere.

## Images

![CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable - Image 1](https://m.media-amazon.com/images/I/51vvR7HWdXL.jpg)
![CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable - Image 2](https://m.media-amazon.com/images/I/61YTVNfcN6L.jpg)
![CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable - Image 3](https://m.media-amazon.com/images/I/61TuHZjl6WL.jpg)
![CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable - Image 4](https://m.media-amazon.com/images/I/61K7k9ZBAcL.jpg)
![CallezRJ9 Telephone Training Adapter Y Splitter for Headset or Handset Compatible with Mitel Polycom Avaya Yealink Cisco Grandstream NEC and Other Desk Phones, Headset Phone Splitter Extension Cable - Image 5](https://m.media-amazon.com/images/I/71W7dnbot2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Excellent, many thanks!
  

*by S***U on Reviewed in the United Kingdom on 16 September 2023*

Excellent, many thanks!

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**Shop now:** [https://www.desertcart.jp/products/548074923-callezrj9-telephone-training-adapter-y-splitter-for-headset-or-handset](https://www.desertcart.jp/products/548074923-callezrj9-telephone-training-adapter-y-splitter-for-headset-or-handset)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-02*