
NT8D14 Universal Trunk card
Page 603 of 906
Circuit Card
Description and Installation
Recorded announcement trunk operation
Note:
Refer to “Multi-Channel RAN modes” on
page 605
for
information on Multi-Channel RAN modes, which are not linked to a
RAN machine or a given trunk.
When configured for Recorded Announcement (RAN) operation, a trunk unit
is connected to a customer-provided recorded announcement machine.
Announcement machines must be compatible with RAN trunks. Use the
manufacturer’s instructions to set up the Announcement machines.
Each trunk unit provides the following for operation with RAN equipment:
•
pulse start, level start, or continuous operation modes
•
selectable termination of tip and ring leads into 600 or 900 ohms for
interface with a low-impedance (2 or 4 ohms) source
•
connection of up to 24 trunk units to a single announcement machine
channel
Recorded announcement machines
Recorded announcement machines store prerecorded voice messages that are
played back to the trunk units to which they are connected. Most
commercially available announcement machines store recordings digitally,
although some drum and tape units are still in service.
An announcement machine can provide one or more channels and each
channel may be prerecorded with a different message. Some announcement
machines also provide a Special Information Tone (SIT) capability. These
tones are inserted at the beginning of intercept messages such as “Your call
cannot be completed as dialed. Please check the number and try again.”
Figure 138 on
page 604
shows a typical connection from a single
announcement machine channel to unit 0 on a universal trunk card.
Summary of Contents for Circuit Card
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Page 4: ...Page 4 of 906 Revision history 553 3001 211 Standard 3 00 August 2005...
Page 18: ...Page 18 of 906 Contents 553 3001 211 Standard 3 00 August 2005...
Page 78: ...Page 78 of 906 Overview 553 3001 211 Standard 3 00 August 2005...
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Page 156: ...Page 156 of 906 Option settings 553 3001 211 Standard 3 00 August 2005...
Page 192: ...Page 192 of 906 NT4N39AA CP Pentium IV Card 553 3001 211 Standard 3 00 August 2005...
Page 378: ...Page 378 of 906 NT5K21 XMFC MFE card 553 3001 211 Standard 3 00 August 2005...
Page 384: ...Page 384 of 906 NT6D70 SILC Line card 553 3001 211 Standard 3 00 August 2005...
Page 388: ...Page 388 of 906 NT6D71 UILC Line card 553 3001 211 Standard 3 00 August 2005...
Page 544: ...Page 544 of 906 NT8D02 and NTDK16 Digital Line cards 553 3001 211 Standard 3 00 August 2005...
Page 546: ...Page 546 of 906 NT8D03 Analog Line card 553 3001 211 Standard 3 00 August 2005...
Page 564: ...Page 564 of 906 NT8D09 Analog Message Waiting Line card 553 3001 211 Standard 3 00 August 2005...
Page 626: ...Page 626 of 906 NT8D14 Universal Trunk card 553 3001 211 Standard 3 00 August 2005...
Page 720: ...Page 720 of 906 NTAK09 1 5 Mb DTI PRI card 553 3001 211 Standard 3 00 August 2005...
Page 734: ...Page 734 of 906 NTAK10 2 0 Mb DTI card 553 3001 211 Standard 3 00 August 2005...
Page 744: ...Page 744 of 906 NTAK20 Clock Controller daughterboard 553 3001 211 Standard 3 00 August 2005...
Page 762: ...Page 762 of 906 NTAK79 2 0 Mb PRI card 553 3001 211 Standard 3 00 August 2005...
Page 772: ...Page 772 of 906 NTBK22 MISP card 553 3001 211 Standard 3 00 August 2005...
Page 844: ...Page 844 of 906 NTVQ01xx Media Card 553 3001 211 Standard 3 00 August 2005...
Page 850: ...Page 850 of 906 NTVQ55AA ITG Pentium card 553 3001 211 Standard 3 00 August 2005...
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