GTE Omni Si Database Technical Practices Issue 1 Manual

TL-130500-1001
On four-wire trunks, the level change is performed by using
standard-level coordination pads. The values of the transmit
and receive analog pads (PT and PR, respectively) required
to adjust levels differ, depending on the loss plan implemented.
Also, under the VNLP, PR varies with the VNL of the trunk. Under
the FLP, PT is always 15.5 dl3 and PR is 7.0 df3 (Figure 36.9).
Under the VNLP, PT is always 13.5 
dB and PR is (VNL + 6.5) dB(Figure 36.3). In those cases where carrier terminals are...

TL-130500-1001Table 36.3
ICL and FLP Digital Pad Switching Rules
IICONNECTIONDIGITAL PAD DIGITAL PAD
END ‘;;FD IcL(A) RECEIVE
(B) RECEIVE
(WNW
NOTES:
-7REMARKS
Transmission
Performance and
Testing Proceduress-3541. Trunk group 1 consists of PABX-CO, foreign exchange, and
class 5 WATS trunks.
2. Trunk group 2 consists of Tie and class 4 WATS trunk.
3. Gain and loss for two-wire trunks must be done in trunks by
changing strapping resistors.
36.4 This paragraph provides information on transmission...

TL-130500-1001
0
0
0-2.0-3.2
-3.5
OMNI PABX
B PADClass 5 CO0.5
A PAD
!
1.2 dB
facility
t
0.3dB
Office
Loss
-3.5-3.0 0
0 --1.5
-0.30
Notes:1. Strapping resistors are changed to compensate
for the facility to obtain a 3.5 
dB circuit.
2.Digital pads are labeled A and B to Table 36.3
Figure 
36.5Line to CO Trunk Call (FLP)
The systems are designed to be installed as new PABXs orto replace existing installations. They may operate as main,
tandem, or satellite PABXs within a TTTN (Tandem Tie Trunk
Network),...

TL-130500-1001-3.2
OMNI PABX
B PADvoice
Class 5 CO
0.5A PAD
-3.5-3.000-3.0+0.3-0.30
Note:Strapping resistors are changed to compensate
for the facility to obtain a 3.5 
dB circuit.
Figure 36.6Line to CO Trunk Call (FLP) with Voice Frequency RepeaterIf a system is intended to replace an existing analog PABX,
due to growth or feature enhancements, no special treatment
of trunks or facilities is required, assuming the trunks and
facilities were properly engineered for the analog PABX. The
PABXs provide pad...

TL-130500-10010-0
Line
Card
OMNI PABX
B PADClass 5 COvoice frequency
repeater
PABX
cablecable-5.5 -5
00 --3.0+1.5-3.60
Notes:1. Strapping resistors are changed to compensate for the facility to obtain a 5.5 
dB circuit.
2. Digital pads are labeled A and 
8 to allow correlation to Table 36.3.
Figure 36.7Line to Nontandem Tie Trunk Call (FLP)
000+7-3.2
-3.5
OMNI PABXClass 5 CO
BPAD/-
; .Av 1 /1/-------
0.5A PAD0.3 dB
office
loss
-3.5-3.0 0
-0.30Note: Digital pads are labeled A and 
B to to allow...

TL-130500-10010.00
0-0.5+7-3.5
OMNI PABX
\B PAD 0.5 
’ PT
0.5A PAD
4-wire
trunk
card
tMain PABX 
office
-5.5-5.0 00+7-16-2 0
Notes:
1. Pads PT and PR are selected to obtain an FLP loss of 5.6 dB.2. Digital pads are labeled A and B to allow correlation to Table 36.3
Figure 36.9Line to Intertandem Tie Trunk Call (FLP)When a trunk group is provided on different facilities (i.e., direct
digital interface and physical facilities), the physical facilities
should be reviewed to ensure that proper transmission...

TL-130500-100100
0+7-3.5-5.5
OMNI PABXMain PABX
j Line
! Card
--------A 1IrMatrix
9+7 A- ,0 test
i0 level 
;
5d5i2 point 
:8 -16A---I\,
3
i-l
2s-5.5 -5
00 --16-2.00.0Note: Digital pads are labeled A and B to Table 36.3
Figure 36.10Line to Intertandem Tie Trunk Call (FLP) with Tl-Type Repeater Line
0-2.0+ 5.0 -5.2-5.5Main PABX
PABXClass 5 CO
B PAD
Tl -tyberepeater
line-------I .A PADITl -typerepeater
line
0.3
dBoffice
loss
-5.5-3.5+70-0-16-0.3Note: Digital pads are labeled A and B to Table 36.3
Figure...

TL-130500-1001Transmission
Performance
Specifications
Impedance
and Resistance
Insertion Loss
Frequency
Response
Level Tracking
Error
Signal to Distortion
(C-Notch)
S-36036.6 This paragraph lists the transmission specifications for the
OMNI SI PABXs. The specifications are for the PABX alone and
do not include any outside plant effects. Short lengths of cabling
(50 feet or less) from the PABX to an MDF (Main Distributing
Frame), or equivalent, are accounted for.36.6.1 Impedance and resistance are defined...

Intermodulation
Distortion
(Four-Tone Method)
Single Frequency
Distortion
Envelope Delay
Distortion
SW 5210TL-130500-1001
36.6.6 This test method uses two sets of tones (one set at 856
and 863 Hz with a 
~-HZ spacing, and the second set at 1,374
and 1,385 Hz with an 11 -Hz spacing) that are applied
simultaneously to the path at a combined level of -10 
dBm with
the second and third order distortion products being measured.
The requirements are as follows:
l The second order distortion shall measure less...

TL-130500-1001Path Message
Noise36.6.9 Path message noise on any path through the system
should not exceed the following values:
l Message noise maximum: 23 dBrnC, 35 
dBrn 3KHz.
l Average: 18 dBrnC.
Path Impulse
Noise
The typical noise on any station-to-station path is in the 15 to
18 dBrnC range.36.6.10 Impulse noise on any path through the system should be
less than or equal to 5 counts in 5 minutes at the 
52-dBrnC
level.
Crosstalk
Attenuation36.6.11 The worst case crosstalk attenuation measured...