ISDN BRI S/T Fiber Products
FiberPlex TD-5601 Fiber Optic Isolator/Converter/Modem - ISDN BRI S/T; industrial packaging

The TD-5601 Series are an Industrial Grade ISDN 4-Wire S/T devices providing Isolation, Conversion and Extension over Fiber

The TD-5601 provides electrical isolation and the extension of 4-wire S/T-Interface ISDN communications. These units are ideally suited for the extension of ISDN ISDN T or S Bus Interfaces and PBX or SATCOM links. Traditional S/T cabling is limited to a maximum distance of 2953 feet (900 m), but using multimode or singlemode optics on the unit can extend the distance up to 1.5 miles (2.4 km), 

The unit can be used in areas of high electrical noise or in and out of RF shielded enclosures. The fiber optic cable is not susceptible to interference caused by impulse noise, crosstalk, or EMI. Privacy of communications is also enhanced because the fiber optic cable does not radiate any emissions.
NOTE: Distance limitations of optical connection (multimode or singlemode) are due to ISDN specifications on delay.

A standard link would consist of TD-5601 at each end of a fiber cable connection. These units create a simple plug and play point to point fiber extension for ISDN BRI S/T circuits which makes deployment of application to application and circuit extensions fast and easy. Due to the flexible nature of SFP modules, the SFP version of this unit can accommodate a variety of singlemode, multimode, BiDi or CWDM optical modules providing maximum flexibility.

TD-5601 applications

  • Supports Data Rates up to 192 kbps
  • ISDN BRI (Basic Rate Interface), also known as BRA (Basic Rate Access)
  • 2B+D data passes transparently
  • Multimode extension 1.24 miles (2km) or Singlemode extension of up to 1.5 miles (2.4 km)
  • Compliant CCITT I.430, ANSI T1.605
  • Available with a variety of mounting options including DIN rail, NEMA enclosures and 1U rack tray mounting.
  • Power Adapter Included
# Model # Description Availability
1 TD-5601-C Isolator for ISDN BRI S/T 4-wire Interface, no optics included, TD Package, Includes AC  Power Adapter General Availability

2 TD-5601-L22 Isolator for ISDN BRI S/T 4-wire Interface, 1310nm Multimode LC optics, TD Package, Includes AC  Power Adapter Special Order

3 TD-5601-L5B Isolator for ISDN BRI S/T 4-wire Interface, 1310nm Singlemode LC optics, TD Package, Includes AC  Power Adapter General Availability


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