To support analog voice applications in the TSU multiplexer, ADTRAN has several modules available that provide FXS, FXO and E&M interfaces. For flexibility, the analog voice modules come in a variety of formats. These modules provide a quick and simple upgrade path for TSU multiplexers requiring... Read more

$487.00 - $610.00

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$275.00 - $339.00

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

$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

NetVanta 7100 T1/PRI Voice Interface Module provides one RBS T1 or one PRI (5E, DMS100, or National) interface for termination of TDM voice trunks and includes DBU port. ... Read more

$286.00 - $482.00

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

$266.00 - $473.00

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$283.00 - $485.00

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$697.00 - $773.00

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

$189.00 - $473.00

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$304.00 - $390.00

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$439.00 - $481.00

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$753.00 - $753.00

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

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$419.00 - $540.00

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$463.00 - $463.00

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 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 V.34 DBU Module provides switched backup of the leased line application. This module allows backup data rates of up to 33.6Kbps over the public switched telephone network (PSTN).??PRODUCT FEATURES:??Provides V.34 modem dial backup rates up to 33.6 Kbps via RJ-45 analog POTS line; ?Provides dial ... Read more

$349.00 - $349.00