Adtran T1 DSU/CSUs

ATLAS
The ATLAS Series of IADs offers the highest capacity and most advanced set of networking services. From a single platform, ATLAS can support multiple technologies including T1, T3, ISDN, IP routing, and Frame Relay. IT managers and network engineers of small, medium and large enterprise networks may choose ATLAS for its ISDN conversion and oversubscription features, T1 Inverse Multiplexing, ISDN PRI/BRI switching, multiple T1/PRI DACSing and grooming, Frame Relay concentration/switching, compressed voice, T3 applications, and videoconferencing.

This multi-T1/PRI enterprise platform converges voice, data, video, and Internet traffic through dynamic bandwidth allocation, T1 Inverse Multiplexing, circuit switching, and packet routing. The ATLAS 550 is designed for the small-to-medium networks with one to 18 T1/PRI ports, while the ATLAS 830 is designed for medium-to-large networks that require up to 34 T1/PRI ports or a T3. The ATLAS 890 supports up to 64 T1/PRI ports or a T3 and can be used in networks that require full system redundancy.

For global applications, the ATLAS Series also offers a range of interfaces including E1, ISDN PRA and BRI S/T, along with support for Net-3 and Net-5 Euro-ISDN protocols.

Smart 16/16e Shelves
ADTRAN offers a variety of Central Site Rackmount Solutions. The Smart 16/16e Shelves house up to 16 rackmount modules which are used to deploy a variety of network services including ISDN, DDS, T1, and Frame Relay. An added benefit of the Smart 16/16e is centralized management within the shelf. Embedded SNMP access is available in the Smart 16e products through the 10BaseT ethernet interface.

TSU Multiplexers
ADTRAN's TSU Multiplexer Series redefined the T1 multiplexer marketplace in 1994. Today, this equipment is some of the most reliable and respected for aggregating multiple voice only or voice and data services onto T1 or FT1 bandwidths.

The intelligent TSU and TDU devices offer either one (1XX series) or six (6XX series) expansion slots, with up to four interfaces per slot. More than thirty plug-in and plug-on modules are available to support analog voice, Nx56/64 data, subrate data, disaster recovery, and other applications. The "e" series devices additionally include SNMP management via a SLIP or 10BaseT port, an enhanced terminal screen, and N-Form support.

TSU Single-port DSU/CSUs
ADTRAN's full line of cost-effective single-port TSUs provide an interface between T1 or Fractional T1 service and the end user's Data Terminal Equipment (DTE) for applications such as LAN to LAN connectivity, Frame Relay circuit termination and dedicated videoconferencing.

The TSU ESP adds integral SNMP management and dial backup support which allows for automatic switched backup in the event of a dedicated T1 line failure. The backup features do not apply when the device is used to transparently pass frame relay traffic to an external router.