Ann15B And Ann16B Options; Figure 82. Ann15B And Ann16B Switch Locations; Table Al; Table Al. Switch Settings - AT&T System 85 Installation And Test

ANN15B and ANN16B Options
One switch package (Si) containing three rocker switch sections is positioned on the circuit
pack as shown in Figure 82.
CONNECTOR
END
UP
DOWN
Figure 82. ANN15B and ANN16B Switch Locations
Set the option switches based on the length of the DS1 cross-connect point using Table AL.
If a DS1 trunk port from a System 85 is connected to another system or device that has
similar equalization options, a phantom point midway between the two systems should be
chosen as the distance. The options at both systems should be set at the distance to the
phantom point. If the unit being connected to the DS1 trunk port does not have equalization
options, the distance should be set to the input of the device.
TABLE AL. Switch Settings
CABLE LENGTH
SW1 SW2 SW3
0-133 feet
D D U
133-266 feet D U
D
266-399 feet D U U
399-533 feet U
D D
533-655 feet U D U
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