NEC Electra Elite 48/192 Features And Specifications Manual page 397

Issue 6
I - 14
Use Memory Block 3-29 (Trunk Interval Transmit Pad Selection) to
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specify Internal Transmit (default: 8 dB) Pad (Volume) control.
Use Memory Block 3-30 (Trunk Interval Receive Pad Selection) to
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specify Internal Receive (default: 8 dB) Pad control.
Use Memory Block 3-31 (Trunk External Transmit Pad Selection) to
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specify External Transmit (default: 0 dB) Pad control.
Use Memory Block 3-32 (Trunk External Receive Pad Selection) to
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specify External Receive (default: 0 dB) Pad control.
Use Memory Block 3-50 (ISDN Line SPID Assignment) to assign the
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ISDN Service Profile Identifier (SPID) Number.
Use Memory Block 3-52 (ISDN Trunk Directory Number Assignment)
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to assign the ISDN directory Number.
Use Memory Block 7-1 (Card Interface Slot Assignment) to specify
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the BRT(4)-U10 ETU.
Restrictions:
The Electra Elite ISDN-BRI provides voice communication only.
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The system does not support multipoint access.
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The Electra Elite 48/192 system supports the NI-1 (National ISDN-1)
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protocol. The AT&T and Nortel proprietary protocols are not
supported.
The BRT(4)-U10 ETU supports the S/T-type interface but not the U
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interface.
Electra Elite 192:
Eight BRT(4)-U10 ETUs can be installed in a system.
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Sixty-four ISDN trunks (B channels) can be assigned in a system.
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The BRT(4)-U10 ETU must be installed in the Basic B64-U10 KSU
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slots S1~S4 and/or the first expansion B64-U10 KSU slots S1~S4.
Electra Elite 48:
Two BRT(4)-U10 ETUs can be installed in a system.
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Sixteen ISDN trunks (B channels) can be assigned in a system.
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The BRT(4)-U10 ETU must be installed in slot S3 or S4.
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Electra Elite
ISDN-BRI Trunk Connections