Top 11 ISDN Modems on Amazon (Verified You can Buy)
Atlas 550 T1/PRI Module
Ratings for ADTRAN (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Refurbished Phone Exchange | - | ❌ | ❌ | ❌ |
ADTRAN ISU 512E ISDN Inverse Multiplexer 10BT Snmp
Ratings for ADTRAN (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
Definity TN464F Universal DS1 / ISDN PRI Interface (Renewed)
Ratings for Definity (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Global Phone Supply | - | ❌ | ❌ | ❌ |
Diva T/A ISDN Modem External Model 310-191
Ratings for Diva T/A ISDN Modem External Model 310-191 (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ppiechnik | - | ✅ | ✅ | ✅ |
| LovesToRead | - | ✅ | ✅ | ✅ |
| Raznia Imports | - | ✅ | ✅ | ✅ |
Cisco NM-2CT1-CSU 3600 2-Port Channelized T1/ISDN-Pri with Csu Network Module
- Original Language: English
Ratings for Cisco (CPR Score)
TIGER 209680-A - ISDN Phone Modem Card walt
Ratings for TIGER Companies (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| TWONNY | - | ❌ | ❌ | ❌ |
Features
Adtran 4-Port Channelized T1/ISDN-PRI Module. ATLAS 550 QUAD T1/PRI MODL MUX-CP. 4 x Channelized T1/ISDN PRI
Ratings for Adtran 4-Port Channelized T1/ISDN-PRI Module. ATLAS 550 QUAD T1/PRI MODL MUX-CP. 4 x Channelized T1/ISDN PRI (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Refurbished Phone Exchange | - | ❌ | ❌ | ❌ |
Eicon Diva LAN ISDN Modem - ISDN terminal adapter - external - ISDN BRI ST - 128 Kbps - 1 digital port(s) / 2 analog port(s) - Ethernet, ISDN
Ratings for Eicon Networks (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| dintebi | - | ✅ | ✅ | ✅ |
| ThorMJ | - | ❌ | ❌ | ❌ |
Features
ADTRAN Atlas 550 Mod Quad Bri 4 ISDN U Interfaces
Ratings for ADTRAN (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Refurbished Phone Exchange | - | ❌ | ❌ | ❌ |
Features
4-Port Channelized T1/ISDN-PRI Module
Ratings for ADTRAN (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| GENUINE-HARDWARE | - | ❌ | ❌ | ❌ |
Features
Aatraay 56K Modem 56K External Modem 11×8×3 Fax Modem Dual Port Usb2.0 56K External Modem Driver for 7 8 10
Ratings for Aatraay (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| tianquanquan | - | ❌ | ❌ | ❌ |
Features
Top 10 ISDN Modems - Verified to Buy (September 2026)
- 1. Atlas 550 T1/PRI Module
- 2. ADTRAN ISU 512E ISDN Inverse Multiplexer 10BT Snmp
- 3. Definity TN464F Universal DS1 / ISDN PRI Interface (Renewed)
- 4. Diva T/A ISDN Modem External Model 310-191
- 5. Cisco NM-2CT1-CSU 3600 2-Port Channelized T1/ISDN-Pri with Csu Network Module
- 6. TIGER 209680-A - ISDN Phone Modem Card walt
- 7. Adtran 4-Port Channelized T1/ISDN-PRI Module. ATLAS 550 QUAD T1/PRI MODL...
- 8. Eicon Diva LAN ISDN Modem - ISDN terminal adapter -...
- 9. ADTRAN Atlas 550 Mod Quad Bri 4 ISDN U Interfaces
- 10. 4-Port Channelized T1/ISDN-PRI Module
Top 6 ISDN Modems Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- ADTRAN
- Definity
- Cisco
- TIGER Companies
- Eicon Networks
- Aatraay
Related ISDN Modems Guides
For more personalized ISDN Modems guides, Check those pages,
Top 9 ISDN Modems Sellers: CPR Seller Rank List
CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.
- 1. TWONNY : 3,387 Yearly Feedback , Avg. Ratings 4.6
- 2. GENUINE-HARDWARE : 1,517 Yearly Feedback , Avg. Ratings 4.8
- 3. LovesToRead : 1,149 Yearly Feedback , Avg. Ratings 4.8
- 4. Refurbished Phone Exchange : 513 Yearly Feedback , Avg. Ratings 4.7
- 5. Amazon.com : 386 Yearly Feedback , Avg. Ratings 4.7
- 6. Global Phone Supply : 334 Yearly Feedback , Avg. Ratings 4.5
- 7. dintebi : 178 Yearly Feedback , Avg. Ratings 4.6
- 8. tianquanquan : 155 Yearly Feedback , Avg. Ratings 3.4
- 9. Raznia Imports : 23 Yearly Feedback , Avg. Ratings 4.5
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | TWONNY | 3,387 | 4.6 |
| 🥈 | GENUINE-HARDWARE | 1,517 | 4.8 |
| 🥉 | LovesToRead | 1,149 | 4.8 |
| 4 | Refurbished Phone Exchange | 513 | 4.7 |
| 5 | Amazon.com | 386 | 4.7 |
| 6 | Global Phone Supply | 334 | 4.5 |
| 7 | dintebi | 178 | 4.6 |
| 8 | tianquanquan | 155 | 3.4 |
| 9 | Raznia Imports | 23 | 4.5 |
[Get] ISDN Modems Deals (✅Exclusively for Prime)
What does "Amazon Fulfilled" Mean?
Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.
When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.
What does "Prime" Mean?
"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.
Prime members also have access to other benefits, including 2-Day Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime Gaming, and more.
What does "Free Shipping" Mean?
"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.
Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.
Why Should You Trust Us?
Now hundreds and thousands of Computers & Accessories supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best ISDN Modems to buy for new September 2026?
CherryPicks’s Methodology for Evaluating ISDN Modems
We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Computers & Accessories items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.
We collected and analyzed 11 of ISDN Modems reviews based on our selection criteria. It helped us shortlist the top qualified and rated ISDN Modems for Computers & Accessories, We found that most customers choose ISDN Modems with an average price of $343.39, and the top brands are Cisco And ADTRAN.
Then our expert-level editors reviewed all those quality items and selected the top 11 ISDN Modems for you, We have researched hundreds of sellers and picked the top sellers for Computers & Accessories, including TWONNY, GENUINE-HARDWARE, LovesToRead, Refurbished Phone Exchange, Amazon.com, Global Phone Supply, dintebi, tianquanquan And Raznia Imports. The Atlas 550 T1/PRI Module are available for purchase right now, and The seller of #1 rank product has received honest feedback from 0 consumers with an average rating of 0.0.
We've helped a lot of satisfied users get the right Electronics product based on their needs, and save lots of time for them to pick ISDN Modems to buy.
Jeffery is a student of mechatronics engineering who has fallen in love with a writing product reviews on electronics. He owns a blog and a YouTube channel where he unboxes and reviews electronic products. He brings his experience here to help you buy only the good products out there.