GTE Omni Si Database Technical Practices Issue 1 Manual

TL-130500-1001Table 4.1
Memory Cross-Reference Get Started FileChannel Memory to EPCMN Network Memory Cross-Reference
Group 0 Slots AO, A2, A4, 
A5, A7, A9, Group 1 Slots BO, B2, B3, B5, B6, B7
AlO, All
B8, B9, BllChannelEPCMN Network Memory Channel EPCMN Network Memory
Memory
Memory
CMA
CMBPAD
04. . .CMACMBPAD
08. . .OA. . .oc. . .04. . .08. . .OA. . .oc. . .
CH 00. .oo
. . .00. . .01. . .
02CH 01. . 
.04
. . .08. .05. .OACH 02. . 
.08. . .
10. .09. . .12CH 03
. . .OC
. . .18. . .OD. . .1ACH 04. . 
.lO....

TL-130500-1001
Table 4.2Memory Cross-Reference Expansion File
Channel Memory to EPCMN Network Memory Cross-ReferenceGroup 4 Slots Cl 
- C6Group 5 Slots C7 - Cl 1
ChannelEPCMN Network Memory Channel EPCMN Network Memory
MemoryMemory
CMACMBPAD .CMACMBPAD
02.. .
08.. .OA. . .OC. . .02.. .08. . . OA. . .oc. . .
CH 00. .OO
. . .01. . .01. . .03CH 01. . 
.04
. . .09. . .05. . .OBCH 02. 
.08. . .11. ..09. . .13CH 03. . 
.oC
. . .19. .OD. . .1BCH 04. . 
.lO. . .21. . .11. . .23CH 05. . 
.14
. . .29. . .15. ....

TL-130500-1001
Table 4.2Memory Cross-Reference Expansion File
Channel Memory to EPCMN Network Memory Cross-Reference (Continued)Group 6 Slots DO 
- D5
Group 7 Slots D6 - DllChannelEPCMN Network Memory Channel EPCMN Network Memory
Memory
Memory
CMA
02. . .CMBPAD
CMACMBPAD08. . .OA. . .oc. . .02. . .08. .OA. .
oc. . .
CH 00. 
.02
. . .
05. . .03.07CH 01. 
.06
. . .OD. . .07. .OFCH 02
. . .OA
. . .
15. . .OB. .17CH 03
. . .OE
. . .1D. . .OF. . .1FCH04 . ..12
. . .25. . .13. .27CH 05. . 
.16
. . .2D. . .17
....

TL-130500-1001
Each time slot also includes other memories not yet discussed:
control memory B, pad memory and some extra memory
locations allocated to information memory. The purpose of these
memories follows:
Control Memory B4.3.3 Control memory B accommodates three-way conference
calls. This is done as follows:
1. The third party (phone off-hook) has been assigned a different
time slot; and, in this arrangement, each time slot contains the
information memory address of the other two time slots (one...

TL-130500-1001
4. The process continues until the subscriber connects to the
information memory address that is associated with the time
slot assigned to the party being called.Line Card Interface4.4 Transmission of voice/tone signals through the time-switch
network is performed using time-division multiplex techniques
and by collecting samples of the input signal
1. The incoming signal passes through to the CODEC converter
circuits on the line card.
2. A digital sample is taken and put onto the PCM IN...

TL-130500-1001
Time Slot Group4.4.2 In the system, each group has 24 time slots or channelsDivision(Figure 4.6). The channel memory connects to the EPMN
(Expanded Pulse Code Modulation Network) card by front tab
plug-in cables and uses one-half of the EPCMN card
containing information memory. Therefore, 24 time slots per
group times 6 groups per system equals 144 time slots. See
Section 10.0 for more information on time slots.
I-PCMUS GROUP C 48 TIME SLOTS--IFILE A
f24-t--4-
:::::;12345678901...

TL-130500-1001Network Hardware4.5 The time-switch network is a self-sustainina ooeration. It
A
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IT
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A
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A
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10
a
64
2ZERO
-2
-4
-6
-8-10
-12
Operationcontinuously performs memory reading functiois and acts on the
data obtained without intervention from the system
microprocessors. Once the system microprocessor has written
instructions into the time-switch network memories for a given
phase of any call progression, no further intervention is required.
The 
INCKS (Synchronizable...

TL-130500-1001LIa
Tu6
D
E4
A2NZEROD
LA
-6
RI-aT
Y-10
-12ANALOG SIGNAL BEING SAMPLED
TIME+
Figure 4.8Sampling an Analog Signal
- II -5.18 MICROSECONDS
PER CHANNEL IN EACH FILE
CHANNEL
00000000001111111111 22220000000000111111llll22220000NUMBEH01234567890123456789 01230123456769012345676901230123erc
,o I- 125MICROSLCONDS ---Ia
6
4
l-l
#2#32E FADEAZERO
-2DGEl c1G
-4
-6
-8-10f i-Y-r
A = PRECEDING ANALOG SAMPLE AS IT APPEARS ON THE PCM BUSB.C,D. ETC = OTHER ANALOG SAMPLES FROM OTHER FILE INTERFACE
Figure...

TL-130500-1001
The INCKS card provides 8-phase sequences or synchronizing
intervals for each cycle so that its base rate is 49.408 MHz. The
PCMTS (Pulse Code Modulation Tone Source) card and the
EPCMN card are time-synchronized by the INCKS card. The
instantaneous digital equivalent of the tone samples are loaded
into information memory addresses 192 through 255
(hexadecimal CO through FF) during every pass of time slots 64
though 128. Both EPCMNs repeatedly sequence time slots 1
through 192. Thus,...