
NT5D33 and NT5D34 Lineside E1 Interface cards
Page 257 of 906
Circuit Card
Description and Installation
Overview
The LEI card is an IPE line card that provides a cost-effective, all-digital
connection between E1 compatible terminal equipment (such as voice mail
systems, voice response units, trading turrets, etc.) and the system. In this
application, the terminal equipment can be assured access to analog (500/
2500-type) telephone line functionality such as hook flash, SPRE codes and
ringback tones. The LEI supports line supervision features such as loop and
ground start protocols. It can also be used in an off-premise arrangement
where analog (500/2500-type) telephones are extended over twisted-pair or
coaxial E1 with the use of channel bank equipment.
The LEI offers significant improvement over the previous alternatives. For
example, if a digital “trunk-side” connection were used, such as with the DTI/
PRI interface card, “lineside” functionality would not be supported.
Previously, the only way to achieve lineside functionality was to use analog
ports and channel bank equipment. With the LEI, a direct connection is
provided to the IPE. No channel bank equipment is required, resulting in a
more robust and reliable connection.
When used for connecting to third-party applications equipment, the LEI
offers a number of benefits. It is a more cost-effective alternative for
connection because it eliminates the need for expensive channel bank
equipment. The LEI card supports powerful E1 monitoring, and diagnostic
capability. Overall costs for customer applications may also be reduced
because the E1-compatible IPE is often more attractively priced than the
analog-port alternatives.
The LEI is compatible with all IPE-based systems and with standard public
or private CEPT-type carrier facilities. It supports CRC-4- or FAS only
framing formats as well as AMI or HDB3 coding. Because it uses standard
PCM in standard E1 timeslots, existing E1 test equipment remains
compatible for diagnostic and fault isolation purposes. A/B Bit signaling may
be customized according to the user’s system, including the Australian P2
signaling scheme.
Card interfaces
The LEI passes voice and signaling data over DS-30X loops through the
DS-30X Interface circuits and maintenance data over the card LAN link.
Содержание Circuit Card
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Страница 4: ...Page 4 of 906 Revision history 553 3001 211 Standard 3 00 August 2005...
Страница 18: ...Page 18 of 906 Contents 553 3001 211 Standard 3 00 August 2005...
Страница 78: ...Page 78 of 906 Overview 553 3001 211 Standard 3 00 August 2005...
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Страница 156: ...Page 156 of 906 Option settings 553 3001 211 Standard 3 00 August 2005...
Страница 192: ...Page 192 of 906 NT4N39AA CP Pentium IV Card 553 3001 211 Standard 3 00 August 2005...
Страница 248: ...Page 248 of 906 NT5D11 and NT5D14 Lineside T1 Interface cards 553 3001 211 Standard 3 00 August 2005...
Страница 378: ...Page 378 of 906 NT5K21 XMFC MFE card 553 3001 211 Standard 3 00 August 2005...
Страница 384: ...Page 384 of 906 NT6D70 SILC Line card 553 3001 211 Standard 3 00 August 2005...
Страница 388: ...Page 388 of 906 NT6D71 UILC Line card 553 3001 211 Standard 3 00 August 2005...
Страница 533: ...NT8D02 and NTDK16 Digital Line cards Page 533 of 906 Circuit Card Description and Installation Figure 106 NTDK16 DLC...
Страница 544: ...Page 544 of 906 NT8D02 and NTDK16 Digital Line cards 553 3001 211 Standard 3 00 August 2005...
Страница 546: ...Page 546 of 906 NT8D03 Analog Line card 553 3001 211 Standard 3 00 August 2005...
Страница 564: ...Page 564 of 906 NT8D09 Analog Message Waiting Line card 553 3001 211 Standard 3 00 August 2005...
Страница 626: ...Page 626 of 906 NT8D14 Universal Trunk card 553 3001 211 Standard 3 00 August 2005...
Страница 680: ...Page 680 of 906 NT8D41AA Serial Data Interface Paddle Board 553 3001 211 Standard 3 00 August 2005...
Страница 694: ...Page 694 of 906 NT8D41BA Quad Serial Data Interface Paddle Board 553 3001 211 Standard 3 00 August 2005...
Страница 720: ...Page 720 of 906 NTAK09 1 5 Mb DTI PRI card 553 3001 211 Standard 3 00 August 2005...
Страница 734: ...Page 734 of 906 NTAK10 2 0 Mb DTI card 553 3001 211 Standard 3 00 August 2005...
Страница 744: ...Page 744 of 906 NTAK20 Clock Controller daughterboard 553 3001 211 Standard 3 00 August 2005...
Страница 762: ...Page 762 of 906 NTAK79 2 0 Mb PRI card 553 3001 211 Standard 3 00 August 2005...
Страница 768: ...Page 768 of 906 NTAK93 D channel Handler Interface daughterboard 553 3001 211 Standard 3 00 August 2005...
Страница 772: ...Page 772 of 906 NTBK22 MISP card 553 3001 211 Standard 3 00 August 2005...
Страница 844: ...Page 844 of 906 NTVQ01xx Media Card 553 3001 211 Standard 3 00 August 2005...
Страница 850: ...Page 850 of 906 NTVQ55AA ITG Pentium card 553 3001 211 Standard 3 00 August 2005...
Страница 884: ...Page 884 of 906 QPC841 Quad Serial Data Interface card 553 3001 211 Standard 3 00 August 2005...
Страница 906: ...Page 906 of 906 Appendix A LAPB Data Link Control protocol 553 3001 211 Standard 3 00 August 2005...
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