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COMPONENT DESCRIPTIONS
10-15
Edition One
XC1000 Service
and control information over a PCM bus. The PCM bus connects only the DLCs
and TICs in a line-card group, with each line-card group using a separate PCM
bus. The PCM buses are not connected to other cards in the system. Digitized
voice signals from the 24 TIC channels are multiplexed and transmitted across
the PCM bus to the DLCs at a rate of 64 kbps per channel.
TICs and DLCs are located in card slots 7 through 18 in a single-cabinet
XC1000 and in slots 25 through 36 in cabinet 2 of a dual-cabinet XC1000.
Figure 10-10 shows an example of a card configuration for all line-card
groups.
CPU
FILE
CARDS
DLC FOR
CHANNELS
1A – 1L
DLC FOR
CHANNELS
2A – 2L
DLC FOR
CHANNELS
3A – 3L
DLC FOR
CHANNELS
4A – 4L
DLC FOR
CHANNELS
5A – 5L
DLC FOR
CHANNELS
6A – 6L
DLC FOR
CHANNELS
7A – 7H
ATIC,
DID TIC, OR
E&M TIC FOR
CHANNELS
1A – 1L
ATIC,
DID TIC, OR
E&M TIC FOR
CHANNELS
2A – 2L
T1 TIC FOR
CHANNELS
3A – 4L
E1 TIC OR
CHANNELS
5A – 7H
PTIC FOR
DATA AND CONTROL BUSES
12 PORTS
24 PORTS
30 PORTS
12 PORTS
PCM BUS
PCM BUS
PCM BUS
MONITOR
ACP
Figure 10-10. Example of Line-Card Groups.
10.3.1 Digital Line Cards (DLCs)
The DLC performs three major functions:
Voice compression
Voice expansion
Call control
During the recording of a message, six digital-signal-processing (DSP) cells
located on the DLC compress digitized voice samples sent from the TIC. Each
SECTION 10.3
SECTION 10.3
Содержание XC1000
Страница 1: ...EDITION ONE XC1000 P N 101 1345 000 SERVICE MANUAL ...
Страница 8: ...CONTENTS ...
Страница 19: ...1 INTRODUCTION ...
Страница 30: ...2 SITE PREPARATION ...
Страница 60: ...3 PLATFORM INSTALLATION ...
Страница 112: ...4 STARTUP AND INITIALIZATION ...
Страница 177: ...5 ROUTINE MAINTENANCE ...
Страница 195: ...6 TROUBLESHOOTING ...
Страница 237: ...7 STATUS LOG ...
Страница 297: ...STATUS LOG 7 54 Edition One XC1000 Service ...
Страница 302: ...8 REPAIR AND REPLACEMENT ...
Страница 380: ...9 SYSTEM UTILITIES ...
Страница 424: ...10 COMPONENT DESCRIPTIONS ...
Страница 465: ...11 OPTIONAL FEATURES ...
Страница 485: ...12 RELEASE 1 55 UPGRADE INSTRUCTIONS ...
Страница 516: ...13 RELEASE 2 X UPGRADE INSTRUCTIONS ...
Страница 559: ...14 RELEASE 3 02 FCP CONVERSION INSTRUCTIONS ...
Страница 603: ...15 RELEASE 3 02 ONLINE UPGRADE INSTRUCTIONS ...
Страница 631: ...16 RELEASE 3 0 SYSTEM UTILITIES ...
Страница 683: ...17 RELEASE 4 X FCP CONVERSION INSTRUCTIONS r P N 281 0023 002 1 of 3 ...
Страница 725: ...18 RELEASE 4 X ONLINE UPGRADE INSTRUCTIONS r P N 281 0023 002 2 of 3 ...
Страница 760: ...19 RELEASE 4 0 SYSTEM UTILITIES P N 281 0023 002 Part 3 of 3 r ...
Страница 776: ...20 RELEASE 4 1 SYSTEM UTILITIES P N 281 0033 000 ...
Страница 787: ...APPENDIXES ...