Communication solutions for power utilities
UNIVERSAL TELEPROTECTION TPU-1
INSTALLATION AND COMMISSIONING MANUAL Web version TPU-1R - Rev. 5.9 (May 2018)
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4.3
LINE INTERFACE MODULES
The TPU-1 terminal has one or two line interface modules, depending on whether it
manages one or two communication channels.
The line interface modules are divided into analog and digital line interface modules.
The digital line interface modules available are: IETU, IDTU, IOTU, IOCT and IPIT. The
analog line interface modules available are: IATU and IBTU.
4.3.1
IETU module
The IETU module gives a 64 kbit/s interface that can be programmed according to
Recommendations X.21/V.11, V.35 or G.703 of the ITU-T.
The IETU module has a 15-pin SUB-D connector on the front plate. Figure 14 to Figure 18
show the assignment of the contacts of the connector for the V.11, X.21, V.35, G.703
codirectional and G.703 contradirectional interfaces, respectively.
Figure 14 Use of the connector of the IETU module for V.11 interface