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

$419.00 - $530.00

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

$627.00 - $736.00

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

$747.00 - $930.00

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 - $473.00

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 - $1255.00

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 - $473.00

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

$560.00 - $700.00

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

$369.00 - $407.00

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

$630.00 - $815.00

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

$627.00 - $694.00

Perle Systems provides network connectivity solutions that link users reliably and securely to central servers for a multitude of essential business applications. It's a trusted partner and the only company to offer essential WAN and LAN connectivity for today's leading e-business platforms. Perle d... Read more

$610.00 - $633.00

Perle Systems provides network connectivity solutions that link users reliably and securely to central servers for a multitude of essential business applications. It's a trusted partner and the only company to offer essential WAN and LAN connectivity for today's leading e-business platforms. Perle d... Read more

$429.00 - $483.00

Brooktrout Technology Instant RAS PCI PRI ISDN Cards (IRAS-24 or IRAS-48) offer a high-performance, cost-effective, scaleable, and manageable way to provide ISDN remote access to a small workgroup or hundreds of users needing access to a corporate network. Installing a Brooktrout Technology PCI PRI ... Read more

$392.00 - $392.00

The DS5800 supports channelized T1 and PRI interfaces. The CT1 trunk card provides physical termination for up to 12 T1/Primary Rate Interface (PRI) lines, includes channel service units (CSUs), and connects directly to the telco network. You can put up to four cards in the DS5814. Cables for connec... Read more

$380.00 - $380.00

Cisco offers a wide variety of connectivity, expansion and upgrade modules to accommodate the range of application needs in customer networks. The network modules assure customers that they can choose a connectivity solution that fits their requirements. As modular components, they are easily and in... Read more

$380.00 - $380.00

Perle Systems provides network connectivity solutions that link users reliably and securely to central servers for a multitude of essential business applications. It's a trusted partner and the only company to offer essential WAN and LAN connectivity for today's leading e-business platforms. Perle d... Read more

$633.00 - $633.00

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

$675.00 - $675.00

Cisco offers a wide variety of connectivity, expansion and upgrade modules to accommodate the range of application needs in customer networks. The network modules assure customers that they can choose a connectivity solution that fits their requirements. As modular components, they are easily and in... Read more

$450.00 - $450.00

Perle Systems provides network connectivity solutions that link users reliably and securely to central servers for a multitude of essential business applications. It's a trusted partner and the only company to offer essential WAN and LAN connectivity for today's leading e-business platforms. Perle d... Read more

$505.00 - $505.00