Description
Andrew CTD-440CA 9-Pin to RJ-11 Networking Adapter
The Andrew CTD-440CA is a networking adapter that bridges 9-pin serial (DB-9) interfaces to RJ-11 telephone jack connections. This adapter is designed to enable communication between legacy data equipment, modems, CSU/DSU units, and other serial devices and systems that require RJ-11 connectivity.
Specifications & What's Included
- Manufacturer: Andrew Corporation
- Model: CTD-440CA
- Input connector: 9-pin DB-9 (male)
- Output connector: RJ-11 jack
- Interface type: Serial-to-RJ-11 adapter
- Compact passive adapter design
- Built for reliable serial data and telecom connectivity
Applications
The CTD-440CA was commonly used in telecommunications and data networking environments during the era when 9-pin serial connections dominated equipment interfaces. This adapter bridges the gap between legacy serial devices and systems requiring RJ-11 connectivity, such as modems, channel service units (CSU/DSU), data multiplexers, and other telecom equipment. It remains useful for maintaining and troubleshooting vintage telecommunications systems and connecting heritage data equipment to modern or legacy telephone line interfaces. Technicians working with older PBX systems, data networks, and industrial control systems that use RS-232 serial communication often rely on adapters like this for system integration and repair work.
This Andrew CTD-440CA 9-pin to RJ-11 networking adapter is in good used condition. It has been inspected and is ready for integration into legacy telecom or data systems. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Andrew |
Model: |
CTD-440CA |
Type: |
Networking Adapter |
Interface Type: |
9-pin Serial to RJ-11 |
Connector Type: |
DB-9 (male) to RJ-11 jack |
Condition: |
Used |
SKU: |
7164 |
Country/Region of Manufacture: |
United States |
Compatible With: |
Legacy telecom systems, data interfaces, serial communications |
Condition Notes: |
Andrew CTD-440CA adapter, used, good condition, inspected and ready to use. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
