CSUs/DSUs

csus/dsus โ€” pre-owned

602listings

Browse 602 csus/dsus โ€” pre-owned on eBay โ€” listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Adtran T3SU 300 1202217L2 T3 w/ 1x DSX-1 1200284L1 Module AC Multiplexer 3-Slot
UsedBuy It NowBest Offer

Adtran T3SU 300 1202217L2 T3 w/ 1x DSX-1 1200284L1 Module AC Multiplexer 3-Slot

The Adtran T3SU 300 1202217L2 T3 w/ 1x DSX-1 1200284L1 Module AC Multiplexer 3-Slot is a high-quality multiplexer product made by ADTRAN in the United States. This model is designed to provide efficient data transmission andmultiplexing capabilities for various communication systems. With its reliable brand reputation and specific model details, this product is a great choice for businesses and organizations seeking reliable network solutions.

$99.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Used Black Box 4 Port USB Multimode Fiber Extender  IC404A
-50%
UsedBuy It NowBest Offer

Used Black Box 4 Port USB Multimode Fiber Extender IC404A

Receive only what is pictured/listed.

$75.00$150.00-50%

You save $75.00

+$6.00Bosque Farms, US
ntnm
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99.8%Excellentยท 43.7k
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RAD ETX-203AX CSU/DSU Ethernet Device RJ-45
UsedBuy It NowBest Offer

RAD ETX-203AX CSU/DSU Ethernet Device RJ-45

RAD ETX-203AX CSU/DSU Ethernet Device RJ-45

$100.00
See listingRedding, US
keyboadkowboy
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100.0%Excellentยท 48
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Adtran NetVanta 3205 Enterprise Router VPN Firewall Gateway P/N 1203870G1
UsedBuy It NowBest Offer

Adtran NetVanta 3205 Enterprise Router VPN Firewall Gateway P/N 1203870G1

Adtran NetVanta 3205 1203870G1 W Rack Ears. Condition is Used. Shipped with USPS Ground Advantage.

$175.00
Free ShippingBurlington, US
surplus.electronics
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100.0%Excellentยท 1.2k
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Adtran Atlas 800 DSP 8-Channel Voice Compression 1200221L1 Module
UsedBuy It NowBest Offer

Adtran Atlas 800 DSP 8-Channel Voice Compression 1200221L1 Module

Voice Compression 1200221L1 Module. Adtran Atlas 800 DSP 8-Channel. YOU WILL RECEIVE ONLY WHAT IS PICTURED IN THE AD UNLESS OTHERWISE NOTED. I WILL TRY MY BEST TO RESOLVE ANY ISSUE OR CONCERNS YOU MAY HAVE.

$299.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Adtran T3SU Quad DSX-1 1200284L1 OSU 300 DSP Module
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Adtran T3SU Quad DSX-1 1200284L1 OSU 300 DSP Module

The Adtran T3SU Quad DSX-1 1200284L1 OSU 300 DSP Module is a high-quality module designed by ADTRAN for their T3SU platform. This module is specifically designed for quad DSX-1 connections, providing advanced DSP capabilities for efficient data processing. With its reliable performance and compatibility with the T3SU model, this module is essential for ensuring seamless communication and data transmission in various networking applications.

$59.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Adtran Atlas 830 890 Dual Video 1200773L1 Module
UsedBuy It NowBest Offer

Adtran Atlas 830 890 Dual Video 1200773L1 Module

ATLAS 800 Series option module. Module provides two independent Video Ports for videoconferencing applications. Each Video Port provides an RS-366 dialing interface and an RS-449 synchronous interface.

$149.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Adtran Atlas 800 830 890 Async-232 1200182L1 Module
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Adtran Atlas 800 830 890 Async-232 1200182L1 Module

The Async-232 Module combines with other ATLAS components to provide solutions for a variety of wide area networking (WAN) applications. For remote access applications, ATLAS receives incoming analog or ISDN-based signals from remote users, and concentrates them onto T1 or Primary Rate ISDN (PRI) circuits.

$99.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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StarTech ET91000SFP2C GE SFP Fiber Media Converter Card for ETCHS2U
UsedBuy It Now

StarTech ET91000SFP2C GE SFP Fiber Media Converter Card for ETCHS2U

StarTech ET91000SFP2C.

$39.99
Free ShippingReno, US
primaryunit
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100.0%Excellentยท 9.1k
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Adtran Atlas 800 830 890 IMUX-56/64 1200262L1 Module
UsedBuy It NowBest Offer

Adtran Atlas 800 830 890 IMUX-56/64 1200262L1 Module

ATLAS 800 Series option module.

$99.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Lot Of 4 IMC MiniMc Fiber / Ethernet Switching Media Converter (10/100/ mbs)
UsedBuy It Now

Lot Of 4 IMC MiniMc Fiber / Ethernet Switching Media Converter (10/100/ mbs)

(No power adapter). No other accessories or parts are included. What's included.

$39.00
Free ShippingAlbuquerque, US
electronicsuperstoreusa
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100.0%Excellentยท 2.2k
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Finisar FTLX1471D3BCL 10GBASE-LR SFP+ 1310nm LR Transceiver Module
UsedBuy It Now

Finisar FTLX1471D3BCL 10GBASE-LR SFP+ 1310nm LR Transceiver Module

Boost your network performance with the Finisar FTLX1471D3BCL 10GBASE-LR SFP+ Transceiver Module. With a wavelength of 1310nm and a maximum distance of 10km, it provides long-range connectivity. The module features a Duplex LC connector for seamless integration into your existing network infrastructure.

$8.88
Free ShippingIrvine, US
enterasource
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100.0%Excellentยท 8.1k
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Legacy Adtran TSU 2nd GEN 1202060L1 LT Full T1 / Fractional FT1 Voice Data Modem
For parts or not workingBuy It Now

Legacy Adtran TSU 2nd GEN 1202060L1 LT Full T1 / Fractional FT1 Voice Data Modem

Adtran 2nd GEN TSU LT T1 Modem. Provides an interface between T1 or fractional T1 service and the end user's DTE. The display on the unit is pixelated. Unsure what the cause could be.

$16.45
+$5.00Butler, US
deeplist
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99.8%Excellentยท 13.0k
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Adtran 1184500F3 Opti6100 SCM3
UsedBuy It NowBest Offer

Adtran 1184500F3 Opti6100 SCM3

Compatibility: Designed for use in the Adtran Opti6100 optical transport chassis. Ideal for service providers, CLECs, ILECs, and carriers maintaining or expanding Opti6100-based transport infrastructure.

$199.00
See listingSan Antonio, US
alamoomala
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100.0%Excellentยท 219
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Adtran Atlas 550 PN: 1200305L2 W/ modules
UsedBuy It NowBest Offer

Adtran Atlas 550 PN: 1200305L2 W/ modules

The option for money back is available during the warranty.

$499.990
See listingUpland, US
zsaleszz
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99.8%Excellentยท 1.6k
View on eBayOpen listing โ†’
Baseband Samsung SLS-BB1180 Base Station free shipping
UsedBuy It NowBest Offer

Baseband Samsung SLS-BB1180 Base Station free shipping

Includes unit only.

$349.90
Free ShippingGreenville, US
ticktock1-2-3
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98.2%Excellentยท 57.6k
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Lot of 2x Adtran Atlas 800 830 890 Quad NX 56/64 V.35 1200184L1 Modules
UsedBuy It Now

Lot of 2x Adtran Atlas 800 830 890 Quad NX 56/64 V.35 1200184L1 Modules

The product is a lot of two Adtran Atlas 800 830 890 Quad NX 56/64 V.35 1200184L1 modules. These network modules are manufactured by ADTRAN, a well-known brand in the telecommunications industry. Made in China, these modules are designed to provide high-speed network connectivity and reliability for various communication and networking systems. Ideal for businesses and organizations looking to enhance their network infrastructure, these modules offer a reliable and efficient solution for expanding network capacity and improving performance.

$24.50
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
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Used Allied TELESIS at-mc1004, Media Converter
-50%
UsedBuy It NowBest Offer

Used Allied TELESIS at-mc1004, Media Converter

Receive only what is pictured/listed.

$9.00$18.00-50%

You save $9.00

+$6.00Peralta, US
ntnm
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99.8%Excellentยท 43.7k
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Adtran Atlas 800 830 890 MODEM-24 1200782L1 Module
UsedBuy It NowBest Offer

Adtran Atlas 800 830 890 MODEM-24 1200782L1 Module

The Adtran Atlas 800 830 890 MODEM-24 1200782L1 Module is a network module designed by ADTRAN specifically for the 830 model. This module is a key component for providing modem functionality and ensuring reliable network connectivity. With its high-quality construction and compatibility with the Adtran Atlas 800 series, this module is a vital part of any network setup that requires seamless and efficient communication.

$324.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
View on eBayOpen listing โ†’
Adtran Atlas 800 830 890 HDLC 1200222L1 Module Free Shipping
UsedBuy It NowBest Offer

Adtran Atlas 800 830 890 HDLC 1200222L1 Module Free Shipping

The Adtran Atlas 800 830 890 HDLC 1200222L1 Module is a network module designed by ADTRAN, a reputable brand in the industry. This module is specifically designed for use with Adtran Atlas 800, 830, and 890 routers, providing high-definition voice and data capabilities. With free shipping included, this product offers convenience and reliability for businesses looking to enhance their network infrastructure.

$179.95
Free ShippingFall River, US
nsn-networking
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100.0%Excellentยท 7.8k
View on eBayOpen listing โ†’
ADRTAN Total Access 900e 3rd GEN TA 908e w/FXO - TESTED/FACTORY RESET
UsedBuy It NowBest Offer

ADRTAN Total Access 900e 3rd GEN TA 908e w/FXO - TESTED/FACTORY RESET

$199.95
Free ShippingTucson, US
tucson_buying_group_llc
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100.0%Excellentยท 19.2k
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FINISAR FTLX1471D3BCL 10GBASE SFP+, LONG WAVE, LC, 1310NM
TOP
UsedBuy It Now

FINISAR FTLX1471D3BCL 10GBASE SFP+, LONG WAVE, LC, 1310NM

FINISAR FTLX1471D3BCL. This silver transceiver module is designed to provide high-performance networking and is compatible with various electronic devices. 1 Year Warranty.

$7.00
Free ShippingSmyrna, US
it_xchangeTOP
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99.4%Excellentยท 4.5k
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Antaira Technologies Optolinx IMP-100A-S3-T Industrial PoE Media Converter
-25%
UsedBuy It NowBest Offer

Antaira Technologies Optolinx IMP-100A-S3-T Industrial PoE Media Converter

Antaira IMP-100A-S3-T. The IMP-100A-S3-T features a SC fiber connector as well as the STP-RJ45 Ethernet connector. Embedded 1 Port PoE Injector Function. Key Features RJ-45 Port Support Auto MDI/MDI-X Function.

$15.00$20.00-25%

You save $5.00

+$4.25Chandler, US
jaxpeakllc
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99.8%Excellentยท 7.4k
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Black Box MT100A-35-R2 T1 CSU/DSU Modem
TOP
UsedBuy It NowBest Offer

Black Box MT100A-35-R2 T1 CSU/DSU Modem

Hours of Operation.

$16.99$24.99-32%

You save $8.00

Free ShippingSaint Joseph, US
lakemichigancomputersTOP
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99.8%Excellentยท 48.7k
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HP JD092B X130 10GbE 10GBASE-SR LC SR SFP+ 850nm Optics Transceiver SPP5100SR-HP
UsedBuy It Now

HP JD092B X130 10GbE 10GBASE-SR LC SR SFP+ 850nm Optics Transceiver SPP5100SR-HP

The truth is out there! Asset recovery and recycling services.

$8.95
Free ShippingBurnsville, US
techy_parts
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100.0%Excellentยท 38.0k
View on eBayOpen listing โ†’
StarTech MCM110ST2 10/100 Multi Mode Fiber Ethernet Media Converter FREE S/H
UsedBuy It Now

StarTech MCM110ST2 10/100 Multi Mode Fiber Ethernet Media Converter FREE S/H

We can then adjust your invoice before checkout. Requesting an Updated Invoice Local Pickup.

$24.99
Free ShippingFalls Church, US
musthavegear
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99.5%Excellentยท 38.4k
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Adtran 4243924F1 Total Access 924e 3rd Gen Gateway
-6%
UsedBuy It Now

Adtran 4243924F1 Total Access 924e 3rd Gen Gateway

Scratches and Scuffs. Unit only includes what is shown in pictures. Tech Titans Inc.

$399.99$425.00-6%

You save $25.01

Free ShippingChino, US
techtitansinc
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100.0%Excellentยท 14.5k
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Adtran Atlas 890 Chassis 1200321L1 w/2*Controller +1*Quad T1 PRI +2*PSU Module
UsedBuy It Now

Adtran Atlas 890 Chassis 1200321L1 w/2*Controller +1*Quad T1 PRI +2*PSU Module

The Adtran Atlas 890 Chassis 1200321L1 is a high-quality data transfer switch designed for enterprise networking. It features two controllers, one quad T1 PRI, and two PSU modules, providing a reliable and efficient networking solution for businesses. With the trusted ADTRAN brand and model Atlas 890, this product ensures top-notch performance and connectivity for a range of networking needs.

$415.00
+$125.00Check, US
darreramse8
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99.4%Excellentยท 1.5k
View on eBayOpen listing โ†’
ADC Kentrox T-SERV II 01-77965023 Serial Hub RS-232 Network Telecom Beige USA
TOP
UsedBuy It NowBest Offer

ADC Kentrox T-SERV II 01-77965023 Serial Hub RS-232 Network Telecom Beige USA

$29.99
See listingBremerton, US
the.northwest.collectorTOP
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99.7%Excellentยท 1.2k
View on eBayOpen listing โ†’
Lot 5 ADC Kentrox T-SERV II 77965 NCCSDHT4AB CSU/DSU T1 Network Modems
TOP
UsedBuy It NowBest Offer

Lot 5 ADC Kentrox T-SERV II 77965 NCCSDHT4AB CSU/DSU T1 Network Modems

Lot Of 5 Mixed ADC Kentrox 77965 T-SERV II NCCSDHT4AB CSU - Read Ad. All parts are tested and verified working before they are listed. Item Condition & Warranty. HARD DRIVES.

$67.16$235.62-71%

You save $168.46

Free ShippingMarietta, US
redbytetechTOP
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99.2%Excellentยท 6.9k
View on eBayOpen listing โ†’
Adtran OCU 45 1200664L1 Optical Converter MM ST White 48V, No Ac Adapter, WORKS
UsedBuy It NowBest Offer

Adtran OCU 45 1200664L1 Optical Converter MM ST White 48V, No Ac Adapter, WORKS

Adtran OCU 45 1200664L1 Optical Converter โ€“ Multi-Mode ST. Function: Optical Converter (OCU 45). Adtran OCU 45 Optical Converter (1200664L1). 48V AC power adapter (required for operation). Interface: Multi-Mode Fiber (ST connectors).

$89.98
Free ShippingCommerce City, US
broncos
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99.7%Excellentยท 70.8k
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LUCENT CONNECTREACH Network Dual T1 CSU DSU Integrator DSX Voice Channel Bank
UsedBuy It Now

LUCENT CONNECTREACH Network Dual T1 CSU DSU Integrator DSX Voice Channel Bank

Excellent - Minor surface blemishes that can be seen, but not felt. Technician Support. Good - Small Scratches, minor scuffing.

$149.99
Free ShippingSanta Ana, US
satisfying-products
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99.8%Excellentยท 7.5k
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Adtran Atlas 800 Series MODEM-24 Module 1200782L1
UsedBuy It NowBest Offer

Adtran Atlas 800 Series MODEM-24 Module 1200782L1

$325.00
Free ShippingRaynham, US
dcomcomputers
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100.0%Excellentยท 21.5k
View on eBayOpen listing โ†’
STARTECH ET90110ST2 10/100 RJ45 ST MULTI MODE FIBER
UsedBuy It Now

STARTECH ET90110ST2 10/100 RJ45 ST MULTI MODE FIBER

$34.95
Free ShippingAlbuquerque, US
electronicsuperstoreusa
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100.0%Excellentยท 2.2k
View on eBayOpen listing โ†’
Specialty Microwave Corp. 6793-502 - Broadcasting Switch Controller
UsedBuy It NowBest Offer

Specialty Microwave Corp. 6793-502 - Broadcasting Switch Controller

Specialty Microwave Corp. 6793-502. Once you place an order, we will confirm everything within 24 hours. If issues arise, we will reach out right away. We appreciate your understanding! Not satisfied?.

$145.00
See listingRocklin, US
testworld_inc
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99.8%Excellentยท 5.9k
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Adtran 1202.060L1 T1 Service Unit, TSU 2ND Generation
UsedBuy It NowBest Offer

Adtran 1202.060L1 T1 Service Unit, TSU 2ND Generation

Key Features: Model: TSU 2nd Generation Part Number: 1202.060L1 Manufacturer: Adtran, Inc.

$18.40
See listingMiddletown, US
assetrecoveryzone_com
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99.9%Excellentยท 8.0k
View on eBayOpen listing โ†’
StarTech 10/100 Mbps Ethernet to Multi Mode SC Fiber Media Converter 2km
TOP
UsedBuy It Now

StarTech 10/100 Mbps Ethernet to Multi Mode SC Fiber Media Converter 2km

The unit is ingood physical condition and has been fully tested to ensure it works perfectly. No other accessories or cables included. Connector: SC.

$19.99
+$5.00Lorton, US
ferouzagoodsTOP
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99.9%Excellentยท 10.2k
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GLC-FE-100FX-RGD | Cisco | Transceiver Module, 100BASE-X, Used
UsedBuy It NowBest Offer

GLC-FE-100FX-RGD | Cisco | Transceiver Module, 100BASE-X, Used

GLC-FE-100FX-RGD | Cisco | Transceiver Module, Small Form-Factor Pluggable. Transceiver Module. Cisco GLC-FE-100FX-RGD. Is Cisco GLC-FE-100FX-RGD not the part you are wanting?.

$189.00
Free ShippingDenver, US
4dcontrolsllc
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98.8%Excellentยท 905
View on eBayOpen listing โ†’
10x Adtran TSU ACE 2nd Gen CSU/DSU Data Channel Service Unit 1202295L1, FREESHIP
UsedBuy It NowBest Offer

10x Adtran TSU ACE 2nd Gen CSU/DSU Data Channel Service Unit 1202295L1, FREESHIP

Model: TSU ACE 2nd Gen - P/N- 1202295L1 - TSU ACE. Make: Adtran. SUM Computers Inc. Item Details Warranty Information.

$174.99
Free ShippingCommerce City, US
broncos
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99.7%Excellentยท 70.8k
View on eBayOpen listing โ†’
Cisco SSM-4GE ASA 4GE MOC
TOP
UsedBuy It NowBest Offer

Cisco SSM-4GE ASA 4GE MOC

We are always looking to buy gently used excess Cisco Networking for cash or trade-in. Data Sanitization: Non-Data Device.

$59.99
Free ShippingMinneapolis, US
altatechTOP
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99.9%Excellentยท 8.3k
View on eBayOpen listing โ†’