Physical - Meridian Nortel 1 Option 11C Technical Reference Manual

Page 372 of 544
Table 109
NT8D09 Analog Message Waiting Line Card application and compatibility
500 type rotary dial sets (or equivalent):
2500 type Digitone sets (or equivalent):
frequency accuracy

Physical

553-3011-100 Standard 14.00
NT8D09 Analog Message Waiting Line Card
The analog message waiting line card interfaces to and is compatible with the
equipment listed in Table 109.
Equipment
dial speed
percent break
interdigital time
pulse duration
interdigital time
speed
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.
January 2002
Specifications
8.0 to 12.5 pps
58 to 70%
150 ms
+ 1.5%
40 ms
40 ms
12.5 digits/s