Description
Ascend P50-U ISDN Modem RJ-45 Network Interface Terminal Adapter
The Ascend P50-U is an ISDN terminal adapter and modem designed for legacy digital communications systems. This unit provides ISDN connectivity through a standard RJ-45 network interface, making it suitable for older office environments, point-of-sale systems, and industrial applications that relied on ISDN dial-up or dedicated digital lines for data and voice transmission.
Specifications & What's Included
- Make: Ascend Communications
- Model: P50-U
- Interface: RJ-45 network connector
- Technology: ISDN (Integrated Services Digital Network)
- Form Factor: Desktop / Benchtop unit
- Power Supply: Not included with this unit
- Condition: Used, inspected
Applications
The Ascend P50-U was widely deployed in the 1990s and early 2000s as a standard ISDN modem for small office and home office (SOHO) environments, branch office connectivity, and as a backup communication link for mission-critical systems. ISDN modems like the P50-U provided reliable digital connectivity at 64–128 Kbps, bridging the gap between analog dial-up and broadband. Today, these units are valued by collectors, legacy system maintainers, and institutions preserving or restoring vintage telecommunications infrastructure. The RJ-45 interface made it compatible with standard network cabling and switches, simplifying installation in older networked environments.
This Ascend P50-U ISDN modem has been inspected and is in used condition. The unit does not include a power supply. Please review our photos and contact us before purchasing if you have any questions about condition or specifications.
Warranty Information
Additional Information
Brand: |
Ascend |
Model: |
P50-U |
Type: |
ISDN Terminal Adapter Modem |
SKU: |
18269 |
Interface Type: |
RJ-45 Network Interface |
Standards Compliance: |
ISDN (Integrated Services Digital Network) |
Form Factor: |
Desktop / Benchtop |
Seller Notes: |
Power supply not included |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Ascend P50-U ISDN modem in used condition. Power supply not included. Inspected, no bench test performed. Contact us with any questions. |
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 |