E1 Connections
For twisted-pair installations, E1 signaling for all 30 channels is transmitted over P2 connector
pins 1, 3, 9, and 11, as shown in
Table 94: LEI card - lineside E1 I/O cable pinouts
214.
Plug the DB 15 male connector labeled "P2" into the E1 link. E1 transmit and receive pairs
must be turned over between the LEI and the CPE that is hardwired without carrier facilities.
If the LEI is connected through E1 carrier facilities, the transmit and receive pairs must be wired
straight through to the RJ48 at the Telco demarc, the LTU, or other E1 carrier equipment. The
E1 CPE at the far-end has transmit and receive wired straight from the RJ48 demarc at the
far-end of the carrier facility.
For 75 ohm coaxial installations, E1 signaling for all 30 channels is transmitted over P2
connector pins 1, 3, 9, and 11 though an adapter and out two coaxial connectors Tx (transmit)
and Rx (receive). Tx is the LEI output, and Rx is the LEI input from the E1 stream. E1 transmit
and receive pairs must be turned over between the LEI and the CPE that is hardwired without
carrier facilities. If the LEI is connected through E1 carrier facilities, the transmit and receive
pairs must be wired straight through to the RJ48 at the Telco demarc, the LTU, or other E1
carrier equipment. The E1 CPE at the far end has Tx and Rx wired straight from the RJ48
demarc at the far end of the carrier facility.
External Alarm Connections
P3 connector pins 1, 2 and 3 can be plugged into any external alarm-sensing hardware. Plug
the DB9 male connector labeled "P3" into an external alarm. These connections are optional,
and the LEI functionality is not affected if they are not made.
The MMI monitors the E1 link for specified performance criteria and reports on problems
detected. One of the ways it can report information is through this external alarm connection.
If connected, the LEI's microprocessor activates the external alarm hardware if it detects
certain E1 link problems it has classified as alarm levels 1 or 2. See
maintenance interface software
on page 222 for a detailed description of alarm levels and
configuration. If an alarm level 1 or 2 is detected by the MMI, the LEI closes the contact that
is normally open, and opens the contact that is normally closed. The MMI command "Clear
Alarm" returns the alarm contacts to their normal state.
MMI Connections
P5 connector pins 2, 3, 5, 7 and 9 are used to connect the LEI to the MMI terminal, connecting
LEIs in a daisy chain for access to a shared MMI terminal. When logging into a LEI, "control
2" is asserted by that card, which informs all of the other cards not to talk on the bus, but rather
to pass the data straight through. The pins labeled "control 1" are reserved for future use. As
Installation
Circuit Card Reference
July 2011 215
Summary of Contents for 1000 Series
Page 1: ...Circuit Card Reference Nortel Communication Server 1000 7 0 NN43001 311 04 04 July 2011 ...
Page 20: ...20 Circuit Card Reference July 2011 ...
Page 30: ...Introduction 30 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 116: ...Option settings 116 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 143: ...Figure 25 CP PIV card front Physical description Circuit Card Reference July 2011 143 ...
Page 148: ...NT4N39AA CP Pentium IV Card 148 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 287: ...Figure 86 Clock Controller Option 3 Operation Circuit Card Reference July 2011 287 ...
Page 302: ...NT5K21 XMFC MFE card 302 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 346: ...NT6D80 MSDL card 346 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 353: ...Figure 96 NTDK16 DLC Functional description Circuit Card Reference July 2011 353 ...
Page 461: ...Figure 147 Paging trunk operation Applications Circuit Card Reference July 2011 461 ...
Page 462: ...NT8D15 E and M Trunk card 462 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 500: ...NTAK09 1 5 Mb DTI PRI card 500 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 512: ...NTAK10 2 0 Mb DTI card 512 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 534: ...NTAK79 2 0 Mb PRI card 534 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 550: ...NTBK22 MISP card 550 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 560: ...NTBK50 2 0 Mb PRI card 560 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 595: ...Figure 165 MGC block diagram Introduction Circuit Card Reference July 2011 595 ...
Page 662: ...NTRB21 DTI PRI DCH TMDI card 662 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 668: ...NTVQ01xx Media Card 668 Circuit Card Reference July 2011 Comments infodev avaya com ...
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