Nortel TDM Recorder, Installation Manual

Page: 26 / 128

Recorder Hardware Installation Standard 3.0
26 Nortel TDM Recorder
Digital station side wiring
The following sections describe how to plan for the Ai-Logix SmartWorks
NGX family of digital voice cards, including typical wiring diagrams for the
three common connection types (Y-Splitter, Bridge Clips, and Dual Punch
Blocks). This information is described in the following topics:
„
Planning your NGX system
„
Using a Bridging Adapter
„
Using Bridge Clips
„
Using dual punch-down blocks
Planning your NGX system
Before you set up your NGX system you must answer a few questions. By
doing so, you will narrow the field of variables that exist in planning and
configuring an NGX digital voice card.
1. What type of system are you looking to set up? There are two
possibilities:
„
Vox Only: The NGX is used for voice recording only, using activity
detection to trigger recording. This method is the simplest configuration,
and provides the least control. At the same time, the VOX option
requires more tuning for individual environments and is more sensitive
to variations in the length and amount of silence in any particular call.
„
D-Channel: Using the D-Channel method allows the user application to
collect raw D-Channel information to determine call states and control
the NGX at the same time. This method provides the greatest amount of
control. In general, while it is recommended that the D-Channel option
for fallback is used, some customers may need to choose VOX because
the D-Channel events may not match their interpretation of what a call is.
Note: Vox Only and D-Channel can be combined. For example, an
application can be designed to record voice data and report raw D-
Channel information.
2. How will you connect the NGX card to your PBX and phones? There
are three possibilities: