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Single Port E1/T1 Access Unit
ETU01A
Single Modular Port E1 CSU/DSU w/ LCD and SNMP

The ETU01A single port stand-alone DSU/CSU provides our best digital access solution for E1 and Fractional E1 network services termination. A DTE device may be linked to an ETU01A at data rates of 56Kbps to 2048Kbps.

ETU011
Single Modular Port E1 CSU/DSU

The ETU011 stand-alone DSU/CSU is a digital access unit for Unframed E1, Fractional E1, or Fractional cascaded E1 service.

ETU01-U
ETU01-U

  • Supports Unframed E1 (2.048Mbps)
  • Removable interfaces, support V35, X21, RS530, RS449, NRZ, Ethernet Bridge and Router
  • I/O connectors on rear panel
  • Multiple clock source selection (Internal or External: E1 recovery, DTE or DCE)
  • Built-in BERT with V.54 diagnostic capabilities for performing local and remote loopback

ETU01-Plus
Single V35 Port E1 CSU/DSU

The ETU01-Plus stand-alone DSU/CSU is a digital access unit for Unframed E1 or Fractional E1 service. The ETU01-Plus data channel supports user-selectable transmission rates via randomly selected E1 timeslots, which provides integral multiples of 64kbps, up to a maximum 2.048Mbps (unframed), for a line attenuation of up to 43 dB on twisted pair or coax cable.

G703E1-U
Single Port Unframed E1 CSU/DSU

The G703E1U stand-alone DSU/CSU is a compact, digital access unit for Unframed E1 service termination. The G703E1U data channel supports 2.048Mbps, for a line attenuation of up to 43 dB on twisted pair or coax cable.

TTU01
Single Modular Port T1 (DS1) CSU/DSU

The TTU01 stand-alone DSU/CSU is a digital access unit for Unframed T1 or Fractional T1 service termination. The TTU01 data channel supports user-selectable transmission rates via randomly selected T1 (DS1) timeslots, which provides integral multiples of 56/64kbps, up to a maximum 1.544Mbps (unframed).

ETU/TTU-E1/ T1 Interface Module
ETU/TTU-E1/ T1 Interface Module

When purchasing one of our single or multi-port access units or multiplexers that support user replaceable interface modules, our ETU/TTU interface modules provide easily selectable electrical interfaces for a wide selection of user applications. In addition to standard datacom interfaces such as V.35, RS-530, X.21, RS-449, etc. Ethernet modules are also available for bridging or routing of Ethernet over E1 or T1 network services.