Digital Loggers T-1 User manual

T-1 Audio Logger
Installation Guide

Features
Taps and digitally combines East and West audio for 24 channel
T-1 TDM recording without PBX configuration.
High impedance (Hi-Z) T-1 Tapper quickly bridges RJ-48 lines.
No rewiring is necessary.
Supports AMI, B8ZS line codes and most common T-1 formats
including D4 and PRI.
Records in full G.711 64kb quality on all channels simultaneously.
Each DS-0 audio path can be individually configured. Fractional
T-1 (FT-1) is supported via DS-0 drops.
Recording trigger options include voice-operated (VOX), ABCD
bit signaling, idle code and Q.731 PRI D-Channel.
Digital signatures with time, date, and recording details are
included within the audio log files.
Maximum recording length can be set to split large files into
easily manipulated sections. Maximum disk usage can be limited
on a per-line basis to conserve disk space.
Evidence Builder and Call Investigator utilities sort and analyze
calls in spreadsheet format, concatenate and email recordings.
Provides 48 channels of separate recording when a PBX
combines them or 24 channels combined by the logger.
Compatible with USB 2.0/3.0 and Windows XP to 10.
Requirements
A dedicated PC is recommended, due to the CPU usage required
for streaming real-time audio. Modern 2GHz or faster processor
machines with 4-8GB of memory run fine.
A free USB 480Mbps 2.0 or USB 3.0 port. Slower USB 1.1 ports
do not have the bandwidth necessary to stream.
Installation goes smoothly when you know the T-1 line code and
format.
Anti-virus software should be set to disassociate audio files while
streaming.

Included Hardware
The hardware install kit includes:
T-1 Tapper
Provides a simultaneous Hi-Z East and West tap in 24 channel
mode. Use the press-to-test button to confirm you are properly
connected to the T-1 line.
T-1 USB 2.0 audio logger
The heart of the system. The logger accepts TDM data from the
East and West audio inputs, encodes and buffers it, and streams
data to the PC USB port for recording.
USB “A” to USB “B” High-speed cable with filter
Connects the host PC USB 2.0 or 3.0 port to the T-1 Logger.
Extending this cable past the 2.0m specification is not
recommended.
Short red RJ-48 cable
Completes the connection between the T-1 Tapper and the
demark. Keeping this cable short aids signal integrity.
Long black RJ-48 cables
Connect between to T-1 Tapper or PBX. These cables may be
extended or replaced with longer ones if necessary.

5 volt power supply
A standard 120/240VAC supply with 2.5mm jack. Do not
substitute a 12V supply.
Optional Installation Accessories
Call [phone] if you need help with:
T1 Surge Suppressors
Punch down blocks, adapters, and T1 cabling.
T1 Test Sets –We have loaners available.
Quick Installation Summary
1. When bridging an outside T-1 span, use the T-1 Tapper to
combine East and West sides of the line in 24 channel
configuration. Continue to step 3.
2. To record 48 channels separately from a PBX or CSU without
using the T1 Tapper, skip ahead to the instructions on page 8.
3. Attach the T-1 Tapper between the PBX and Telco demark.
4. Press the button on the T-1 Tapper and confirm you have two
green lights. Verify the PBX clears the alarm and make a test call
to confirm normal T-1 operation before proceeding.
5. Attach the two black East and West cables from the T-1 Tapper
to the logger. These carry East and West TDM data to the logger
at -20dBSx.
6. Insert the CD and install the logging application. Don’t connect
the logger USB cable and power until prompted.
7. Select the T-1 line type and code.
8. Attach the USB cable to a dedicated PC. Connect directly to a
primary USB 2.0 or 3.0 port, not to a hub. We recommend that
the logger is the only external USB device attached to your PC.
Once attached, the USB configuration on this PC should not be
changed. The logger is a high-speed USB 2.0 device, running at
480Mbps. USB 1.1 ports will not work with this device. Beware of

extended length USB cables which may cause errors. Cables longer than the
3 meter USB specification are not recommended. If you need more cable
length, substitute longer cables to the tapper.
9. Shut down the PC. Connect the power adapter to the 5V jack on
the logger. Switch the PC power on after powering the logger.
10. Restart the PC. Install the drivers as prompted. Start the logging
application.
11. Click on each line name to listen to recordings and verify audio
quality using Windows Media Player.
12. Map a network drive to the workstations used for playback. Use
Windows file system security to limit access to authorized
individuals.
13. Install Evidence Builder or Call Investigator software on playback
workstations. These programs allow you to scan recordings and
catalog calls by DTMF and Caller-ID.
14. Install “Real Time Player”as needed for remote monitoring.
15. Install “Call Detail Recorder” if desired for SMDR, ANI, or ALI
recording from RS-232 sources. This will allow correlation of
recordings using time and date.
Cabling the Logger
Connect the T-1 Tapper between the telco and PBX
The T-1 logger supports two configurations, “Combine” and
“Separate”. The most common “Combine” mode is used in
conjunction with T-1 Tapper to bridge an outside T-1 span. This
mode monitors all audio going in both directions on a T-1 line
without terminating it. In “Combine” mode, the logging software
combines the East and West sides of the conversation into a single
audio file. The T-1 Tapper provides a “high-Z” connection, which
will not load the T-1 line. Connect the T-1 Tapper as shown below,
allow time for the T-1 line to resync, then check the PBX for normal
operation before continuing. Insertion of the T-1 Tapper should
have no effect on a properly wired system.

Check T-1 Cabling and Continuity
Depress the button on the T-1 Tapper to confirm there is continuity
in the T-1 Loop. Two green LEDs will illuminate. Both the PBX
and the Telco side must be wired correctly for the LEDs to
illuminate. If you don’t see two green LEDs, check wiring against the
RJ-48C standard:

Cable TDM Data from T-1 Tapper to Logger
Use the two black RJ-48 cables provided to connect the East and
West TDM data from the T-1Tapper to the Logger. If necessary,
these two cables can be substituted with longer cables. Use of cables
with ESD shielding is recommended. When wiring is completed, the
installation should look similar to this:
Power
The adapter is a standard universal input 5VDC 2.5mm switching
adapter. Do not substitute a 12V adapter. The SYNC LEDs may
not illuminate when power is applied if the logging application is
inactive.
USB 2.0 / 3.0 to PC connection
Connect the USB cable between the PC and the logger when
prompted by the installation program, not before. The USB cable
provided has a rectangular “Type A” plug on one end and a square
“Type B” connector on the other. The square connector is the only
connector that can be plugged into the logger. You must connect

this cable to a high-speed USB 2.0 480Mbps port or to a USB 3.0
port. The logger will not function when attached to a slower
11MBps USB 1.1 port. Do not connect to a hub, as delays from
other devices can interrupt the smooth streaming of audio.
48-Channel “Separate” Mode
The 48-channel mode is an alternative to the standard combine
mode. Recording 48 channels can require PBX familiarity and
programming. In 48 Channel mode, the tapper is not used. In most
cases, the PBX must be “looped” to maintain a carrier. Looping is
accomplished either by programming a CSU/DSU, or by wiring the
East and West sides of each DS1 port together . Pin 1 ties to pin 5,
and pin 2 ties to Pin 4. Use cables as short as possible in this
configuration. The input to the logger is pins 1 and 2 on both the
East and West jacks. In this mode, the PBX must be programmed to
cross connect a specified speech path (ie. a particular extension) to a
corresponding timeslot on the T-1. PBX programming may be
required to direct each desired speech path to one of the 48 available
channels.

Software Installation
A Microsoft Windows update is recommended prior to installation.
Visit windowsupdate.microsoft.com. Microsoft has made several
improvements in Windows USB drivers. The application also
requires Microsoft .NET framework version 2.0 or later.
After starting the installation CD, this window appears:
Select “Install Recording Software”. This screen appears:

Click on the image of the T-1 Logger and then “Install Selected
Logger”.