GTE Omni Si Database Technical Practices Issue 1 Manual

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Table 34.2 Table T2541
ENTRYENTRY NO. WORD CONTENTS ADDRESSHEXCONVERSION
TYPEDEC (HEX) NO.BINARYHEXENTRYTABLE A
67543210
12DECBINHEX
LINE SOFTWARE IDNO.0
(0)cl00010000101010000000
LINE SOFTWARE IDNO.
8(8)00001110010111c100011LINE SOFTWARE IDNO.16
(10)00001100010121B200102
LINE SOFTWARE IDNO.24
(18)00010110010132c300113LINE SOFTWARE IDNO.32
(20)00010100010142B401004
LINE SOFTWARE IDNO.40
(28)000100100101524501015
LINE SOFTWARE IDNO.48
(30)000100000101620601106
LINE SOFTWARE IDNO.56...

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Table 34.3 T2541 DescriptiontT2541 - PEC-0 LINE CARD ADDRESSTABLE.
(I l .t * 1. t .t f .* l l * .(I l 0 l f .* .*.* 1THIS TABLE PROVIDES THE HARDWARE POSITION OF EACH EQUIPPED LINE CARD, DETERMINES THE ORDER OF LINE
SCANNING, AND ESTABLISHES THE SOFTWARE ID FOR EVERY LINE IN PERIPHERAL EQUIPMENT COMPLEX 0
LOCATION:CEC DATA PAGE 0 FOR THE St SYSTEM.
COMMON MEMORY FOR PEG0 FOR THE 53 SYSTEM.
TABLE SIZE:
33 BYTES
TABLE LAYOUT:32 IDENTICAL 1 BYTE BLOCKS WITH A HEX FF END OF TABLE MARK IN THE...

TL-130500-1001Processing342.2 This paragraph describes the various tasks
a Callperformed by the system when a call is processed. The
example presumes that a station-to-station call is being
processed and that particular pieces of equipment are
used. (Table 34.4). Specific hardware items have been chosen
so that descriptions of the system activities can also be
illustrated in terms of the time-switch network memories and
their data contents. Illustrations are presented to show the
changes in memories that...

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An arrow head (>) is used in the memory illustrations to indicate
the changes in content. For example, FO 
> 24 means that
channel memory address has changed from idle status (FO) and
now contains the hardware identify number (24) assigned to a
piece of equipment.
The CPU routinely executes a 
IOO-millisecond slow scan of
sense points on all the line, trunk, and feature equipment
interface cards. All circuits on equipment interface cards have
request-for-service sense points. Some...

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0 The CPU then examines the eight sense point status bit inputs
to determine if the status changed on any of the sense points
from the last time they were read. As an example, when a
telephone connected to a line card is taken off-hook, the tip
and ring input to the line card will change from an open
condition to a closed condition. This causes the related
seizure request input to the CPU from the MPB85 card to
change from a high to a low level. This change is detected as
a line...

TL-130500-1001Time Slot34.2.5 When the system CPU detects a request for service in an
Assignmentevent data message, it looks for an available time slot to assign
to the requesting interface card.
The following sequence of.events occurs when the CPU receives
a request for service from an equipment interface card:
* Based on the equipment interface card hardware identification
number in the event data message, the CPU examines tables
(data base) in CPU memory that give the software identity for
the...

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- The CPU loads an attenuation factor address into the time
slot associated address in PAD memory on the EPCMN
card. The contents of this PAD memory address are used
by the PROM PAD attenuator chip on the EPCMN card,
which provides the proper attenuation as the system
transmits (PCM) tones or voice to the originating party or
called party. The attenuation factor address bits that are
loaded into PAD memory are based on the CPU’s
determination of the type of line or trunk to which...

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The DTMF receivers (just as any other peripheral equipment) are
assigned time slots and have sense points that are scanned by
the CPU. A dedicated time slot is assigned to a DTMF receiver,
so that the receiver’s hardware identification number is always
present in a time slot’s channel memory. Thus, the information
memory address of the subscriber’s time slot is put into the
receiver’s control memory so that the receiver can listen to the
subscriber tones when dialing. As memory sampling...

 r
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l The CPU accesses the control memory of the subscriber’s
time slot and prepares to write an information memory address
into control memory. The address now in control memory is
one of the special, extra information memory addresses that
contains the quiet code. For this particular case (dial tone),
the control memory must contain the address of information
memory that has dial tone (another special, extra information
memory address).e The CPU, therefore, writes into the...

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DTMF RECEIVER ASSIGNED AND ORIGINATING TELEPHONE HEARS DIAL TONE
;WITCHNO. 3 CHANNELCONTROL-ACONTROL BPAD
INFORMATION
;+%%Ii////
; FO i
;?32q;5Y2%vzpz478 
I Da I
#5///j78 
I Da I78 : 07 I781 -- I
I/////AI Y////4VWA40 
;FO ’a0 I Da I
y////A
A0 ;07>371
!5SH44
Figure 34.4DTMF Receiver Assignment and Dial Tonel After dial tone is connected to the subscriber, a read control
signal is activated from the 
INCKS card. This causes dial tone
PCM to be read out of information memory and to...