GTE Omni Si Database Technical Practices Issue 1 Manual

SVR 5210TL-130500-1001
Removal of an E&M or FX ground-start loop dial channel unit at
the far end causes an incoming seizure to the system. If the
system data base is configured for the trunk circuit as aringdownto the attendant, removal of the far-end channel unit causes an
incoming call to the attendant’s loop. If a channel unit at the CO
channel is equipped with a busy key, operation of the busy key is
equivalent to removing the channel unit from service. The
system can support one 24-channel, Tl-type...

TL-130500-1001UNIPOLAR BITIS I HtAM
ll---lIl BIPOLARSPAN
OFFICEb INTERFACEFRAMELINECARD- DETECTORCOMPENSATORINGFB-15277-l ACARDCARDORFB-I FB-15280-AIFB-17277-A15278-AIIBIPOLARPCM OUT 8
BITPCM8 BIT
Il-UUI(BIPOLAR)
vc
REMOTEPOWERITlIFRAMING11 1 Tl 11 FAIL
ALARM,1 SUPERVISORYF,1CARD w Li B:%y 11 FB-20718-A 11 FB-17192-A 1IIr-----I-
-----7II
II
III 
IINTERFACE I4,: INTERFACE
r-----------3III
II
II
’ SYSTEM I4ICPUIfI
II
II
L------------J
I.I
I’ NETWORKIL-----------J
Figure 29.2Tl Digital Trunk Interface in...

T
SVR 5210TL-130500-10011 Interface29.2 The Tl interface (Figure 29.2) is comparable to the CO-type Siemens Transmissions Systems 91258 FX Channel Unit or
equivalent. Data base programming determines whether the 
Tlinterface responds to ground-start or loop-start signaling. The
interface can be either incoming, outgoing, or two-way
operation. Since the digital interface is transparent, remote
channel units can be either two-wire or four-wire.
NOTE: When the serving end offices use digital switching,...

TL-130500-1001
l Converts and synchronizes the eight-bit PCM data bytes,
representing voice and tone samples, into serial bipolar frames
of data.
l Outputs the serial bipolar frames of data onto the Tl
connection to the repeater located at the system end of the Tlspan. The 
Tl interface uses time-division-mulitplexing
methods to insert each frame of output data synchronously into
its assigned channel time slot on the multiplexed 24-channel
output to the 
Tl repeater.
The 
Tl interface in the system can...

SW 5210USE CABLE
CONNECTOR 0
ONLY FOR S ITL-130500-1001
F
SINX 0
FB-15277-1ASPAN INTERFACE
CARD HANDLE
Figure 29.3FB-15277-1A Span Interface Card Handle
Frame Detector29.3.2 The FB-15278-A FDC (Frame Detector Card) performs
Cardthe following functions:
l Monitors for errors in framing synchronization patterns.
0 Provides a framing alarm signal to the Tl-Type Supervisory
card when three or more bit-pattern errors are detected out of
five incoming synchronization bits examined.
l Provides a signal to the...

TL-130500-1001
Line CompensatorCard
Tl Buffer
Card
Tl -Type
Supervisory
CardMaster Mode
Operation
S-28829.3.3 The FB-15280-A LCM (Line Compensator Module)
card provides buffering to compensate for propagation delay
variations due to changes in temperature of the span line. Two
PCM frames are stored in the buffer on this card. This card
receives the unipolar bit stream from the span interface card.
This 
unipolar stream is received in serial format and converted to
an eight-bit voice sample that is...

TL-130500-1001RED
INDICATORLAMPS
REDINDICATOR 
-LAMPS
‘B-2071 8-A
LOC
0
REM
0
SYS
0
RPF
0
AC0
0
AC0
v
LP
0
LPTLOCAL ALARM (LOC) LAMP THAT LIGHTS WHEN THE FRAMING OF
-THE INCOMING BIPOLAR SIGNAL IS LOST (INDICATES MISFRAMING;
LOSS OF FRAMING SYNCHRONIZATION).
REMOTE ALARM (REM) LAMP THAT LIGHTS WHEN BIT POSITION 2 OF
-THE INCOMING BIPOLAR STREAM IS INHIBITED FOR A PERIOD OF
1.32 TO 1.44 SECONDS.SYSTEM ALARM (SYS) LAMP THAT LIGHTS WHEN ANY ALARM
-CONDITION EXISTS, INCLUDING WHEN THE SYSTEM IS FULLY...

s-29029.5 System slave mode operation is typically used when theTl data link handles digital data transmissionthat must adhere to
PCM toll communication standards. Present PCM toll
communication standards require a maximum slip rate of one
frame in 20 hours over a particular digital communication link.
The system network clock card 
(FB-20771-1A) does not have
the frequency stability to allow only one frame slip in 20 hours
when the system is operating in the master mode. Therefore, it
is necessary to...

SVR 52108187s-291 

TL-130500-1001Table 29.2Analog Tl Nailed Connections Allowed
FROM
TO
GRD. STARTLOOPE&MLOOP DIDGRD. STARTNo
NoNoNo
LOOP
No
YesYesNo
E&M
LOOP DIDNo
NoYes
NoYes
NoNo
No
1.The supervisory signals must be at least 200 msec in duration.
2.When unlike trunks are connected and any incoming signals are not translatable
to the outgoing type of signal, the signal will be ignored.
SW 5210