RJ45 to RJ11 Adapter (RJ45 Female to RJ11 Male) Premium Features
100% Copper Wire Conductors
We use pure copper, unlike cheap aluminum cables that lose up to a third of the signal. Copper ensures full-strength connections and zero signal loss
More Gold on Contacts
Our 2-line phone splitter features 4× thicker gold-plated contacts for corrosion-resistance. Unlike other manufacturers, we prioritize premium quality
Broad Compatibility
Supports all landline devices: phones, 2-line phones, fax, answering machines. Easily utilize Ethernet cables and wall jacks for telephone connections
Made in USA
Precision made in New York with high-end materials sourced globally. We make the final product ourselves so every detail meets our exacting standards
The Original RJ45 to RJ11 Adapter
EXPERIENCE SEAMLESS INTEGRATION: Use existing Ethernet wiring for telephone line service with our innovative adapter design
UNPARALLELED DURABILITY: Features thicker gold plating for stronger contact points and superior corrosion resistance
SUPERIOR CRAFTSMANSHIP: High-grade materials and precision construction ensure consistent signal transmission
TRUSTED ORIGINAL DESIGN: Created by RetailAndBulk in 2017 as a simple way to adapt existing Ethernet wiring for telephone line service.
RJ11 to RJ45 Connection Example
- RJ11 Male End: Connects to your telephone line wall jack, or VoIP device
- RJ45 Female End: Connects to Ethernet cable
------------------------------------------------------
- RJ45 Female End: Connects to Ethernet cable
- RJ11 Male End: Connects to your telephone, fax or other landline device
PHONE JACK TO ETHERNET ADAPTER RJ11 to RJ45
Connects a landline telephone, fax machine, or other device via an RJ45 wall jack or Ethernet cable.
* NOTE: The RJ11-to-RJ45 adapter does not carry broadband internet. It is designed for telephone line service only.
Designed for specific phone-line wiring configurations, if you’re unsure about compatibility, reach out—we’re here to help.
I need a bulk order of RJ11 to RJ45 adapters quickly. Should I choose Prime or Ships from RetailAndBulk?
Ships from RetailAndBulk is fastest for bulk orders. We ship all RJ11 to RJ45 adapters in one shipment the next business day from our NY workshop where we make them. Prime may need to transfer stock to one warehouse first or send multiple packages.
Are these RJ11 to RJ45 adapters compatible with all landline phones such as AT&T, Panasonic, and cordless phones?
You can use any landline or cordless phone just like you would with a regular phone cord. This adapter simply lets you use an Ethernet cable or your home’s Ethernet wall wiring for phone connections.
Does this Ethernet to phone line adapter support broadband data connection?
No. This adapter does not carry broadband or network data. It is designed only for landline or VoIP telephone connections.
Can I ask about a specific use case for this adapter?
Yes, RetailAndBulk support is available for any questions you may have.
Do you offer bulk discounts on large orders?
Yes, if you have an Business account, you will see it when adding large quantity to cart. We’ve served many large-scale projects, including hotels, retail chains, new constructions, schools, hospitals, TV stations, and fire departments.
Our Premium Telephone Accessories
 Phone Jack Splitter |  Telephone Cords 1 - 15 FT |  Custom Size Phone Cords |  Phone Line Extension Cord |  RJ45 to RJ11 Adapter |  RJ11 Dual Line Splitter |  10GB Ethernet Couplers | |
|---|---|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — | — | — |
Price | — | — | — | — | — | — | — |
Brand | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk |
Phone Jack | RJ11 Male to Female | RJ11 Male to Male | RJ11 Male to Male | RJ11 Male to Female | RJ11 Female to RJ45 Male | RJ11 Female to Female | RJ45 Female to RJ45 Female |
Conductor Material | Pure Copper | Pure Copper | Pure Copper | Pure Copper | Pure Copper | Pure Copper | Shielded CAT6/CAT7 |
Contacts | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
Made in USA | ? | ? | ? | ? | ? | ? | ? |
EXPLORE TELEPHONE ACCESSORIES
Built to meet the demands of professional users—crafted by a U.S. small business with dedicated domestic support.
Telephone Line Cords 1 to 15ft
Phone Jack Splitters
Phone Line Extension Cords
More Telephone Accessories
Our original designs have inspired many look-alike products, but we continue to use higher manufacturing standards and more expensive materials for dependable, long-lasting performance—whether it’s our phone line cords, phone jack splitters, or RJ11 to RJ45 cables and adapters.
Our precision manufacturing and use of 100% copper conductors and thicker gold plating on contacts deliver maximum performance and durability professionals love.
Why do we love what we do?
We take great pride in knowing our products are loved by our customers. The positive feedback and repeat business motivate us to keep delivering top-quality telephone cords, phone jack splitters, and adapters.
RJ45 to RJ11 Adapter (RJ45 Female to RJ11 Male) Premium Features
100% Copper Wire Conductors
We use pure copper, unlike cheap aluminum cables that lose up to a third of the signal. Copper ensures full-strength connections and zero signal loss
More Gold on Contacts
Our 2-line phone splitter features 4× thicker gold-plated contacts for corrosion-resistance. Unlike other manufacturers, we prioritize premium quality
Broad Compatibility
Supports all landline devices: phones, 2-line phones, fax, answering machines. Easily utilize Ethernet cables and wall jacks for telephone connections
Made in USA
Precision made in New York with high-end materials sourced globally. We make the final product ourselves so every detail meets our exacting standards
The Original RJ45 to RJ11 Adapter
EXPERIENCE SEAMLESS INTEGRATION: Use existing Ethernet wiring for telephone line service with our innovative adapter design
UNPARALLELED DURABILITY: Features thicker gold plating for stronger contact points and superior corrosion resistance
SUPERIOR CRAFTSMANSHIP: High-grade materials and precision construction ensure consistent signal transmission
TRUSTED ORIGINAL DESIGN: Created by RetailAndBulk in 2017 as a simple way to adapt existing Ethernet wiring for telephone line service.
RJ11 to RJ45 Connection Example
- RJ11 Male End: Connects to your telephone line wall jack, or VoIP device
- RJ45 Female End: Connects to Ethernet cable
------------------------------------------------------
- RJ45 Female End: Connects to Ethernet cable
- RJ11 Male End: Connects to your telephone, fax or other landline device
PHONE JACK TO ETHERNET ADAPTER RJ11 to RJ45
Connects a landline telephone, fax machine, or other device via an RJ45 wall jack or Ethernet cable.
* NOTE: The RJ11-to-RJ45 adapter does not carry broadband internet. It is designed for telephone line service only.
Designed for specific phone-line wiring configurations, if you’re unsure about compatibility, reach out—we’re here to help.
I need a bulk order of RJ11 to RJ45 adapters quickly. Should I choose Prime or Ships from RetailAndBulk?
Ships from RetailAndBulk is fastest for bulk orders. We ship all RJ11 to RJ45 adapters in one shipment the next business day from our NY workshop where we make them. Prime may need to transfer stock to one warehouse first or send multiple packages.
Are these RJ11 to RJ45 adapters compatible with all landline phones such as AT&T, Panasonic, and cordless phones?
You can use any landline or cordless phone just like you would with a regular phone cord. This adapter simply lets you use an Ethernet cable or your home’s Ethernet wall wiring for phone connections.
Does this Ethernet to phone line adapter support broadband data connection?
No. This adapter does not carry broadband or network data. It is designed only for landline or VoIP telephone connections.
Can I ask about a specific use case for this adapter?
Yes, RetailAndBulk support is available for any questions you may have.
Do you offer bulk discounts on large orders?
Yes, if you have an Business account, you will see it when adding large quantity to cart. We’ve served many large-scale projects, including hotels, retail chains, new constructions, schools, hospitals, TV stations, and fire departments.
Our Premium Telephone Accessories
Phone Jack Splitter | Telephone Cords 1 - 15 FT | Custom Size Phone Cords | Phone Line Extension Cord | RJ45 to RJ11 Adapter | RJ11 Dual Line Splitter | 10GB Ethernet Couplers |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
| — | — | — | — | — | — | — |
| Price | ||||||
| — | — | — | — | — | — | — |
| Brand | ||||||
| RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk | RetailAndBulk |
| Phone Jack | ||||||
| RJ11 Male to Female | RJ11 Male to Male | RJ11 Male to Male | RJ11 Male to Female | RJ11 Female to RJ45 Male | RJ11 Female to Female | RJ45 Female to RJ45 Female |
| Conductor Material | ||||||
| Pure Copper | Pure Copper | Pure Copper | Pure Copper | Pure Copper | Pure Copper | Shielded CAT6/CAT7 |
| Contacts | ||||||
| Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Made in USA | ||||||
| ? | ? | ? | ? | ? | ? | ? |
EXPLORE TELEPHONE ACCESSORIES
Built to meet the demands of professional users—crafted by a U.S. small business with dedicated domestic support.
Telephone Line Cords 1 to 15ft
Phone Jack Splitters
Phone Line Extension Cords
More Telephone Accessories
Our original designs have inspired many look-alike products, but we continue to use higher manufacturing standards and more expensive materials for dependable, long-lasting performance—whether it’s our phone line cords, phone jack splitters, or RJ11 to RJ45 cables and adapters.
Our precision manufacturing and use of 100% copper conductors and thicker gold plating on contacts deliver maximum performance and durability professionals love.
Why do we love what we do?
We take great pride in knowing our products are loved by our customers. The positive feedback and repeat business motivate us to keep delivering top-quality telephone cords, phone jack splitters, and adapters.