NT8D09 Analog Message Waiting Line Card
Page 373 of 544
Option 11C and 11C Mini
Technical Reference Guide
Functional
The analog message waiting line card contains a microprocessor that provides
the following functions:
•
self-identification
•
self-test
•
control of card operation
•
status report to the controller
•
maintenance diagnostics
The analog message waiting line card also provides:
•
600-ohm balanced terminating impedance
•
analog-to-digital and digital-to-analog conversion of transmission and
reception signals for 16 audio phone lines
•
transmission and reception of scan and signaling device (SSD) signaling
messages over a DS30X signaling channel in A10 format
•
on-hook/off-hook status and switchhook flash detection
•
20-Hz ringing signal connection and automatic disconnection when the
station goes off-hook
•
synchronization for connecting and disconnecting the ringing signal to
zero crossing of ringing voltage
•
loopback of SSD messages and pulse code modulation (PCM) signals for
diagnostic purposes
•
correct initialization of all features at power-up
•
direct reporting of digit dialed (500-type telephones) by collecting dial
pulses
•
connection of -150 V DC at 1 Hz to activate message waiting lamps
•
lamp status detection
•
disabling and enabling of selected units for maintenance
Summary of Contents for Meridian 1 Option 11C Mini
Page 2: ......
Page 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Page 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Page 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Page 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Page 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Page 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Page 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Page 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Page 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Page 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Page 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Page 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Page 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Page 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Page 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Page 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Page 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Page 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
Page 545: ......