PT-Family

The PT product family has been developed to enable connections to be made between ISDN telephones that may be located in remote locations, and the main PABX/Switch.

With the help of the PT's, ISDN BRI (S₀) Interfaces can be converted to either U or U_p0-Interfaces.

The main application lies in extending the ranges of BRI (S₀) interfaces up to 8 km, and/or with the help of PT Repeaters up to 24 km.

The PT-SU converts an ISDN-BRI interface to a U-Interface and the PT-US reconverts this U-Interface into the original BRI Interface.

The PTI is a module in a 19-inch rack format, which has the function of 4 x PTs.

The PTI is used at locations where several BRI-Interfaces need to be converted to U-Interfaces. The range of a BRI-Interface is extended by the combination of PT-SU and PT-US over a copper twin wire up to distances of 8 km.

With the use of an additional PT Repeater the range can be extended up to 24 km.

The PT’s are completely transparent and thus can be used with any protocol e. g. 1TR6 and EDSS1.

The PT-SU_p converts an ISDN-BRI interface into an U_p0-Interface and the PT-U_pS converts this back from the U_p0-Interface into the original BRI-Interface. The range of a BRI-Interface is extended by the combination of PT-SU_p and PT-U_pS over a copper twin wire up to distances of 3.5 km.