The Megabit Modem Models 310F and 320F are "back to back" solutions targeted for simple LAN extension applications. The Megabit Modem 310F (local device) and Megabit Modem 320F (remote device) enable transmission of frames-over-ADSL at speeds up to 7.040 Mbps downstream and 928 kbps upstre... Read more

$551.00 - $570.00

The ADTRAN DSU III DBU, a high-performance rackmount data channel service unit (DSU/CSU), provides an interface between the digital data service (DDS) and the customers data terminal equipment (DTE) while providing automatic switched dial backup (DBU) of the dedicated circuit. This is the 1B+D ISDN ... Read more

$557.00 - $557.00

The ADTRAN DSU III TDM, a full-featured four-port digital data service (DDS) data service unit/channel service unit (DSU/CSU), connects up to four DTE devices to a single 56/64 kbps DDS circuit. One communications link is shared by up to four DTE devices through time division multiplexing (TDM). The... Read more

$470.00 - $470.00

The COMSPHERE 3800 Series Software-Defined (SD) modem family is based on Paradyne's award-winning architecture that allows new features and enhancements to be downloaded over the public telephone lines. The COMSPHERE 3800 family consists of four unique full-featured V.32bis modems that support a wid... Read more

$475.00 - $475.00

The COMSPHERE 3800 Series Software-Defined (SD) modem family is based on Paradyne's award-winning architecture that allows new features and enhancements to be downloaded over the public telephone lines. The COMSPHERE 3800 family consists of four unique full-featured V.32bis modems that support a wid... Read more

$640.00 - $640.00

ADTRAN supplies a complete line of ISDN Service Units (ISUs) and NT1s for extending and terminating ISDN Basic Rate service from PBXs and central office switches. The innovative ISU 2x64 has gained widespread acceptance in the industry. ... Read more

$392.00 - $392.00

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 - $560.00

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

$412.00 - $412.00

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$578.00 - $783.00

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$697.00 - $723.00

This is the SuperStack II Remote Access System 1500 ISDN "S/T" I/O Card with 2 ports. Consisting of a base router stack unit, expansion stack unit, and multiple user-installable I/O cards, the SuperStack II RAS 1500 offers unprecedented configuration flexibility. Two expansion units can be... Read more

$203.00 - $316.00

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

$275.00 - $550.00

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

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

$470.00 - $470.00

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$615.00 - $648.00

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$320.00 - $320.00

Cisco's 1-Port Modem WAN Interface Card is available for the award-winning Cisco 1800, 2600XM, 2691, 2800, 3700, and 3800 Series modular router platforms. The interface card provides cost-effective basic telephone service connectivity to allow remote router management, asynchronous dial-on-demand ro... Read more

$320.00 - $329.00

These boards are ideal for client or small server system computer telephony (CT) applications requiring high-performance, cost-aggressive voice and fax processing, but don't require the large-scale system sophistication of SCbus- or CT Bus-based products. The boards use the same application programm... Read more

$350.00 - $350.00

Enterasys Networks provides best-in-class infrastructure solutions to enterprise customers worldwide. With one of the industry's broadest and deepest product portfolios - plus a full range of service and support offerings - Enterasys is uniquely qualified to meet the evolving needs of today's busine... Read more

$715.00 - $715.00

The Digi AccelePort RAS Family of multi-modem analog adapters provides the widest compatibility and most powerful performance available. For demanding applications such as fax servers, remote access, data acquisition and modem pooling, you won't find a better product line than the Digi AccelePort RA... Read more

$338.00 - $1470.00