The digital pad provides gain or attenuation values to condition the level of the digitized
transmission signal according to the network loss plan. This sets transmission levels for the
B-channel circuit-switched voice calls.
The clock recovery circuit recovers the clock from the local exchange.
The clock converter converts the 5.12 MHz clock from the IPE backplane into a 2.56 MHz clock
to time the IPE bus channels and an 8 kHz clock to provide PCM framing bits.
The PE interface logic consists of a Card-LAN interface, a PE bus interface, a maintenance
signaling channel interface, a digital pad, and a clock controller and converter.
The Card-LAN interface is used for routine card maintenance, which includes polling the line
cards to find the card slot where the SILC is installed. It also queries the status and identification
of the card and reports the configuration data and firmware version of the card.
The PE bus interface connects one PE bus loop that has 32 channels operating at 64 kbps
and one additional validation and signaling bit.
The Maintenance Signaling Channel (MSC) interface communicates signaling and card
identification information from the CS 1000CPU to the SILC MCU. The signaling information
also contains maintenance instructions.
The digital pad provides gain or attenuation values to condition the level of the digitized
transmission signal according to the network loss plan. This sets transmission levels for the
B-channel voice calls.
The clock recovery circuit recovers the clock from the local exchange.
The clock converter converts the 5.12-MHz clock from the PE backplane into a 2.56-MHz clock
to time the PE bus channels and an 8-kHz clock to provide PCM framing bits.
S/T interface logic
The S/T interface logic consists of a transceiver circuit and the DSL power source. This
interface supports DSLs of different distances and different numbers and types of terminal.
The transceiver circuits provide four-wire full-duplex S/T bus interface. This bus supports
multiple physical terminations on one DSL where each physical termination supports multiple
logical B-channel and D-channel ISDN BRI terminals. Idle circuit-switched B-channels can be
allocated for voice or data transmission to terminals making calls on a DSL. When those
terminals become idle, the channels are automatically made available to other terminals
making calls on the same DSL.
The power on the DSL comes from the SILC, which accepts –48 V from the IPE backplane
and provides two watts of power to physical terminations on each DSL. It provides -48 V for
ANSI-compliant ISDN BRI terminals and –40 V for CCITT (such as ETSI NET-3, INS NET-64)
compliant terminals. The total power used by the terminals on each DSL must not exceed two
watts.The S/T interface logic consists of a transceiver circuit and the DSL power source. This
interface supports DSLs of different distances and different number and types of terminals.
Functional description
Circuit Card Reference
July 2011 309
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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