Figure 5-26 Prt(1)-U10/20 Etu - NEC Electra Elite 192 Hardware Manual

Electra Elite
System Hardware Manual
4.8 PRT(1)-U10/20 ETU
4.8.1 Description
The PRT(1)-U10/20 ETU is a Digital Trunk Interface that
provides for the termination of an ISDN-PRI line for voice
service only.
The PRT(1)-U10/20 ETU supports AT&T 4ESS (Custom),
AT&T 5ESS (Lucent), DMS-100 (Custom or National
ISDN) and NI-2 protocols. Call-by-Call and Universal call
handling are also supported. Tip and Ring electrical fuses
are provided to comply with UL 1459 requirements.

Figure 5-26 PRT(1)-U10/20 ETU

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