The ADTRAN T1 ESF CSU is a full-featured T1 Channel Service Unit used to connect T1 data terminal equipment (DTE) such as a PBX, switch or channel bank to T1 facilities. Capable of interfacing to both B8ZS or AMI circuits, the T1 ESF CSU can convert signal formats or line code to integrate older equ... Read more

$590.00 - $1041.00

The ADTRAN TSU LT is a low cost, full-featured T1/FT1 Data Service/ Channel Service Unit (DSU/CSU). The TSU LT provides an interface between T1 or Fractional T1 service and the end user's Data Terminal Equipment (DTE) for applications such as LAN to LAN bridging, Frame Relay circuit termination and ... Read more

$599.00 - $736.00

The Paradyne 7520 Multirate DSU offers flexibility and reliability for your wide area data networking requirements at an affordable price. Simple to install and use, it gives today's network manager worry-free operation in any network architecture, including DDS, frame relay or campus. The 7520 is t... Read more

$4.99 - $10.99

ADTRAN designs, develops, and manufactures Advanced Transmission products for high-speed digital communications. ADTRAN's commitment to total customer satisfaction requires continually developing and improving products to meet changing needs while maintaining the highest level of quality. That's why... Read more

$65.00 - $469.00

The Satellite 931 CSU provides conditioning of T1 service lines. Its transparent operation passes the T1 bitstream unaltered. The Satellite 931 includes bipolar violation (BPV) correction, line build out, front-panel LED status indicators, test jacks, power options, and automatic keep-alive signal g... Read more

$430.00 - $458.00

The ADTRAN DSU III AR is a technologically advanced, high performance data service unit/channel service unit. This unit provides a reliable interface between the digital data service (DDS) or 4-wire Switched 56 (SW56) network and the customer's data terminal equipment (DTE). The unit is an all-rate ... Read more

$463.00 - $530.00

The ADTRAN T1 ESF CSU is a full-featured T1 Channel Service Unit used to connect T1 data terminal equipment (DTE) such as a PBX, switch or channel bank to T1 facilities. Capable of interfacing to both B8ZS or AMI circuits, the T1 ESF CSU can convert signal formats or line code to integrate older equ... Read more

$650.00 - $781.00

Combining the energy and drive of a start-up with the award-winning technology and global resources of an industry leader, Enterasys Networks develops solutions exclusively tailored for enterprise-class customers. Enterasys' market focus and inherent strengths give the company the ability to quickly... Read more

$939.00 - $987.00

The ADTRAN TSU LT is a low cost, full-featured T1/FT1 Data Service/ Channel Service Unit (DSU/CSU). The TSU LT provides an interface between T1 or Fractional T1 service and the end user's Data Terminal Equipment (DTE) for applications such as LAN to LAN bridging, Frame Relay circuit termination and ... Read more

$138.00 - $150.00

COMSPHERE 3610 Series Data Service Units (DSUs) are highly reliable, state-of-the-art products ideal for today's network-managed digital environments. The COMSPHERE 3610 DSU enables users to take maximum advantage of today's digital services. Operating in conjunction with Paradyne's COMSPHERE 6700 S... Read more

$2290.00 - $2380.00

The ADTRAN DSU IV ESP (data service unit with embedded SNMP) provides a reliable, high-speed data connection for customer data terminal equipment (DTE) through digital data service (DDS) lines. The DSU IV ESP has an embedded SNMP (simple network management protocol) agent that provides complete SNMP... Read more

$522.00 - $630.00

When installed in a Campus-RS Desktop Unit or a Campus-RS Star chassis, the Campus-RS CSU/DS-1 Interface Card (CADS1) allows the transmission of a T1 or fractional T1 data stream for up to eight miles over unconditioned twisted-pair copper wiring, using HDSL technology. The CADS1 terminates a long-h... Read more

$210.00 - $222.00

The DataSMART T1 MAX Dual-Port features two data ports, allowing video and data to be integrated onto a single network service. In addition, the two data ports have programmable interfaces allowing them to support a variety of data equipment including routers and video codecs. ... Read more

$190.00 - $200.00

This Smart 16/16e rackmount T1 DSU/CSU module terminates a DS1 signal and provides an EIA-530 DB-25 DTE connection. ... Read more

$82.00 - $88.00

The ACCULINK 3100 Series of CSU and DSU/CSU products is your source for intelligent, high quality T1 and Fractional T1 CSUs and DSU/CSUs. The 3100 CSUs and DSU/CSUs provide an interface between Data Terminal Equipment (DTE) and T1 or Fractional T1 services. They are fully compatible with D4 or ESF f... Read more

$407.00 - $407.00

Combining the features of a multiplexer, a DSU, and a CSU, the Access-T family of products lets you leverage the full benefits of today's T1 and fractional T1 services while consolidating your network architecture. At the same time, Access-T helps to simplify network management by providing centrali... Read more

$2300.00 - $2535.00

The Cisco PA-MC-8TE1+ is a single-wide port adapter designed to provide a full eight-port PRI multichannel solution for the Cisco 7200 and Cisco 7400. ... Read more

$7800.00 - $7970.00

The ADTRAN Dual DSU III Module is one of several expansion modules for the TSU multiplexer family of products. This module should be selected when the customer's data terminal equipment (DTE) needs to be connected to the Digital Data Service (DDS) or the Switched 56 network using a T1 line. The modu... Read more

$390.00 - $390.00

The ADTRAN Dual DSU III Module is one of several expansion modules for the TSU multiplexer family of products. This module should be selected when the customer's data terminal equipment (DTE) needs to be connected to the Digital Data Service (DDS) or the Switched 56 network using a T1 line. The modu... Read more

$374.00 - $374.00

Designed to handle the growth and increasing complexity of digital networks, the 3500 Series Data Service Unit (DSU) combines a wide array of features into a single, economical and highly functional unit. The 3500 Series DSU enables the user to make maximum use of digital data services. Based on a f... Read more

$500.00 - $500.00