Description
Teltrend 390ALCD Digital T1 CSU Single Mount w/ Lock RJ-48C Terminal Block
A Channel Service Unit (CSU) for T1 digital telecom circuits. This device terminates and conditions T1 signals between network and customer premise equipment (CPE), supporting ESF framing protocol.
Specifications & What's Included
- Model: 390ALCD
- Interface: T1 with RJ-48C connector and terminal block
- Protocol: T1 ESF
- Mount Type: Single mount with lock
- Form Factor: Desktop/standalone
- LED Indicators: PWR, LPMK, PAC LOS, CPE LOS, ESF, MON, EQUIP IN/OUT, SPAN CURRENT, MNLS
- Date Code: 10/00E
- Unit only—no cables or accessories included
Applications
T1 CSUs were standard interface devices in telecom networks for decades, bridging carrier T1 lines to business phone systems, data routers, and other CPE. This unit supports both ESF and D4 framing modes, making it compatible with legacy and standard T1 network deployments. Commonly used in enterprise telecom closets and remote site installations.
Condition: Used
This Teltrend 390ALCD Digital T1 CSU has been inspected and is in good condition. The housing shows light surface wear consistent with normal use. The front panel LED indicators and labeling are clean and readable. The rear terminal block and RJ-48C connector area appear intact. Please view our photo set and contact us if you have any questions.
This Teltrend 390ALCD Digital T1 CSU has been inspected and is in good condition. The housing shows light surface wear consistent with normal use. The front panel LED indicators and labeling are clean and readable. The rear terminal block and RJ-48C connector area appear intact. Please view our photo set and contact us if you have any questions.
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: |
Teltrend |
Model: |
390ALCD |
MPN: |
390ALCD |
Type: |
Digital T1 Channel Service Unit (CSU) |
SKU: |
34527 |
Condition: |
Used – Inspected |
Interface Type: |
T1, RJ-48C |
Connector Type: |
RJ-48C, Terminal Block |
Protocol: |
T1 ESF |
Mount Type: |
Single Mount with Lock |
Form Factor: |
Desktop / Standalone |
Date Code: |
10/00E |
Country/Region of Manufacture: |
United States |
Seller Notes: |
Unit only — inspected and in good condition. See photos. |
Compatible With: |
T1 telecom networks, CPE equipment, ESF/D4 framing |
LED Indicators: |
PWR, LPMK, PAC LOS, CPE LOS, ESF, MON, EQUIP IN/OUT, SPAN CURRENT, MNLS |
Condition Notes: |
Teltrend 390ALCD Digital T1 CSU. Inspected and in good used condition. Light surface wear on housing. Front panel and terminal block intact. See photos for details. |
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 |
