Page372 of 544 NT8D09Analog Message Waiting Line Card
553-3011-100 Standard14.00 January 2002
The analog message waiting line card interfaces to and is compatible with the
equipment listed in Table109.
Physical
In Meridian 1 Option 11C systems the NT8D09 Analog Message Waiting
Line Card is installed in slots 1 through 10 of the Main cabinet, or in slots 11
through 50 in the Expansion cabinets. In Option 11C Mini, the card is
installed in slots 1 to 3 in the main chassis, or 7 to 10 in the chassis expander.
The line card circuits connects to the backplane through a 160-pin connector.
The backplane is cabled to a connector in the bottom of the cabinet which is
cabled to the cross-connect terminal (main distribution frame) through 25-
pair cables. Station apparatus then connects to the card at the cross-connect
terminal.
The faceplate of the analog message waiting line card is equipped with a red
light emitting diode (LED) which lights when the card is disabled. At power-
up, the LED flashes as the analog line card runs a self-test. If the test
completes successfully, the card is automatically enabled (if it is configured
in software) and the LED goes out.
Table 1 09
NT8D09 Analog Message Waiting Line Card application and compatibility
Equipment Specifications
500 type rotary dial sets (or equivalent):
dial speed 8.0 to 12.5 pps
percent break 58 to 70%
interdigital time 150 ms
2500 type Digitone sets (or equivalent):
frequency accuracy + 1.5%
pulse duration 40 ms
interdigital time 40 m s
speed 12.5 digits/s