Description
Dowty Information Systems 7055005 CSU/DSU V.35 External T1 Modem 115VAC
External CSU/DSU modem that converts T1 line signals to V.35 DTE interface. Operates at T1 data rate of 1.544 Mbps and connects mainframe or minicomputer systems to T1 carrier networks.
Specifications & What's Included
- Interface: V.35 (34-pin Winchester connector)
- Network: T1 screw-terminal connections (TX: T1/R1, RX: T/R)
- Data Rate: 1.544 Mbps
- Power: 115VAC, 0.5A fuse
- Front Panel: TXD, RXD, RTS, CTS, DTR, DSR, LSD, TST, CWR, RLS, NIS LEDs
- Includes AC power cord
Applications
CSU/DSU modems were used to terminate T1 leased lines for legacy systems including IBM mainframes, DEC minicomputers, and telecommunications equipment. The V.35 interface standard was common for high-speed synchronous data transmission in enterprise networks from the 1980s through early 2000s. Typically deployed in data centers and telecom installations where direct T1 line connectivity was required.
Condition: Used
This Dowty Information Systems 7055005 CSU/DSU V.35 external T1 modem has been inspected and is in good used condition. It was pulled from a working environment where it was in active use. The black desktop enclosure shows light surface wear consistent with normal use — some minor scuffing is visible on the top cover. The front-panel LED indicators and labeling are intact and legible. The rear V.35 Winchester connector and screw-terminal T1 interface appear clean and undamaged. The AC power cord is included. 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.
This Dowty Information Systems 7055005 CSU/DSU V.35 external T1 modem has been inspected and is in good used condition. It was pulled from a working environment where it was in active use. The black desktop enclosure shows light surface wear consistent with normal use — some minor scuffing is visible on the top cover. The front-panel LED indicators and labeling are intact and legible. The rear V.35 Winchester connector and screw-terminal T1 interface appear clean and undamaged. The AC power cord is included. 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
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Dowty Information Systems |
Model: |
7055005 |
MPN: |
7055005 |
Type: |
External CSU/DSU Modem |
SKU: |
21063 |
Interface Type: |
V.35 |
Network Interface: |
T1 — screw-terminal (TX: T1/R1, RX: T/R) |
DTE Interface: |
V.35 (34-pin Winchester connector) |
Power Requirements: |
115VAC, 0.5A fuse |
Form Factor: |
Desktop / External |
Connector Type: |
V.35 Winchester (DTE); screw terminals (T1 line) |
Data Rate: |
T1 1.544 Mbps |
Front Panel Indicators: |
TXD, RXD, RTS, CTS, DTR, DSR, LSD, TST, CWR, RLS, NIS LEDs |
Country/Region of Manufacture: |
United States |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
Includes AC power cord. Pulled from a working environment. |
Condition Notes: |
Dowty Information Systems 7055005 CSU/DSU V.35 T1 modem. Inspected, in good used condition. Pulled from a working environment. Light surface wear on enclosure. V.35 port and T1 terminals appear clean. AC cord included. |
