The ADTRAN T1 CSU ACE is a compact, full-featured T1 channel service unit used to connect T1 data terminal equipment (DTE) and T1 facilities. The unit is designed to provide alarms, loopbacks, signal regeneration, line build out, and surge protection.

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 equipment. The ESF CSU is designed to provide alarms, loopbacks, signal regeneration, line build-out, and surge protection, while maintaining 1's density for the DTE and T1 network.

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 equipment. The ESF CSU is designed to provide alarms, loopbacks, signal regeneration, line build-out, and surge protection, while maintaining 1's density for the DTE and T1 network.

The ADTRAN T3SU 300 is a cost-effective multiport T3 DSU/CSU capable of providing users up to four DTE data ports for broadband connectivity over unchannelized T3 networks. This multiport DSU/CSU allows users to share the cost of a T3 line between multiple applications. The affordable T3SU 300 is one of many broadband access products from ADTRAN.

The ADTRAN TSU ACE is a low cost, fullfeatured T1/FT1 Data Service/ Channel Service Unit (DSU/CSU).

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 videoconferencing. The TSU LT provides access to traditional dedicated point-to-point T1 services as well as network termination for Frame Relay.

Single port T1/FT1 SNMP DSU/CSU provides an interface between T1 or Fractional T1 service and the customer's Data Terminal Equipment (DTE). The TSU ESP provides access to traditional dedicated point-to-point T1circuits as well as Frame Relay services. The TSU ESP supports synchronous data rates from 56 kbps to 1.536 Mbps at Nx56 or Nx64 kbps. A single V.35 physical interface provides a connection to the end user's DTE.

The ADTRAN DSU 56/64 provides cost-effective solutions for termination of 56 or 64 Kbps DDS services. The units are a very economical solution for single port point-to-point, multi-point or Frame Relay applications. Extensive use of VLSI technology provides a highly reliable feature-rich DSU.

The ADTRAN DSU 5600 provides a cost-effective solution for termination of 56 or 64 kbps DDS services. The unit is a very economical solution for single port point-to-point or multi-point applications. Microprocessor and VLSI technology enhance the capabilities of the DSU 5600, which is housed in an attractive, slim line, stand-alone, wall-mount, or rackmount enclosure.

The ADTRAN DSU III AR is a technologically advanced, high performance data service unit/channel service unit (DSU/CSU). 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 DSU/CSU supporting synchronous and asynchronous data rates on the primary channel and asynchronous data rates on the secondary channel. The synchronous primary channel rates supported are 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 Kbps. Asynchronous data rates supported are 2.4, 4.8, 9.6, 19.2, 38.4 and 57.6 Kbps. Secondary channel data rates of 75, 150, 300, 600, 1200, and 2400 bps are offered depending upon the primary channel rate.

The TSU 120e is modular, full-featured T1/FT1 multiplexer designed to support a wide range of end-user applications.

When a small number of high speed DTE ports are required, the network manager may choose to use the Nx56/64 V.35 Plug-in Module. Providing a single, female V.35 Winchester interface, the Nx56/64 V.35 Module provides a standard interface to synchronous data applications. Using the built-in 8 kbps inband management channel, the Nx56/64 V.35 Module provides an end-to-end communications channel for SNMP (Telnet) traffic or T-Watch PRO commands from the host site TSU.

The FXO+ Dual Voice (FXO+) option module is one of the option modules available for use with the ADTRAN TSU 100/120/600. The FXO+ module provides two 2-wire voice-grade interfaces serving as the loop termination for central office line current and ringing voltage.

E&M module provide a quick and simple upgrade path for TSU multiplexers requiring support for PBX's, KSU's, analog telephones, dial-up modem pools, fax machines and leased line modems. Applications involving 2- or 4-wire E&M tie lines are supported in the TSU multiplexer with the E&M module. In addition to supporting Type I, II and V E&M signalling, the E&M module support legacy leased line modems in Transmit Only (TO) mode. Each dual port plug-in module supports the 2713Hz loop back tone.

E&M module provide a quick and simple upgrade path for TSU multiplexers requiring support for PBX's, KSU's, analog telephones, dial-up modem pools, fax machines and leased line modems. Applications involving 2- or 4-wire E&M tie lines are supported in the TSU multiplexer with the E&M module. In addition to supporting Type I, II and V E&M signalling, the E&M module support legacy leased line modems in Transmit Only (TO) mode. Each dual port plug-on module supports the 2713Hz loop back tone.

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 equipment. The ESF CSU is designed to provide alarms, loopbacks, signal regeneration, line build-out, and surge protection, while maintaining 1s density for the DTE and T1 network.

The ADTRAN DSU III AR is a technologically advanced, high performance data service unit/channel service unit (DSU/CSU). 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 DSU/CSU supporting synchronous and asynchronous data rates on the primary channel.

The ADTRAN TSU is a low cost, full-featured T1/FT1 Data Service/ Channel Service Unit (DSU/CSU). The TSU 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 videoconferencing. The TSU provides access to traditional dedicated point-to-point T1 services as well as network termination for Frame Relay.