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Protocol Emulation
Overview of MFC-R2 Software Packages |
Overview of MFC-R2 Software |
E1 Interface Capability
MFC-R2 Call Recording and Capture Features |
Call Playback and Viewing Features
MFC-R2 Analysis using R2ANA |
Additional Sample Screens
Summary of Related Transmission and Capture Software |
Buyer's Guide
Overview of GL's MFC-R2 Analysis Software Packages
GL provides a variety of software to perform MFC-R2 signaling analysis and call capture. They are available as,
- MFC-R2 Capture and Analysis (xx070) - This software described in greater detail below permits automatic capture of calls in
systems using MFC-R2 protocol. The user can use signaling bits to trigger the start and stop of capture. Both directions of the call
are captured in an "east" and "west" file along with a "signaling" file. All inband PCM data is captured including digits and voice.
This software is identical to Call Capture and Analysis (xx030) but includes some additional documentation
on MFC-R2 protocol.
- R2ANA - This is a companion program to xx070. It's a stand alone DOS based program that
processes the captured files from xx070 ("east", "west", and "signaling") and displays the ABCD signaling along with the compelled
digit sequence. This is discussed in further detail below.
- VB Client - a Visual Basic GUI Client that connects to the GL Server and performs
MFC-R2 signaling and digit analysis and other functions.
- DTMF/MF/MFC-R2 Detector/Generator - The detector application detects and displays in real-time
DTMF, MF, MFCR2-forward, and MFR2-backward digits as they are received. The generator application can generate the same digits
along with signaling bits. Real-time bi-directional detection of MFCR2 forward and backward digits is possible with two instances of
the capture application.
- Windows Client Server (WCS) Scripted Control - This non-GUI based program is great for
remote and scripted control of captures, transmission, detection and more. MFC-R2 detection and analysis can be done thru simple
scripts transmitted to the server or using the VB GUI Client described above.
- Strip Chart Application - a real-time graphical application that captures signaling as well as PCM
data. Timing relationship of signaling bits and MFCR2 digits is easily viewed and analyzed.
Overview of MFC-R2 Call Capture and Analysis Software
The MFC-R2 Call Capture and Analysis Software (xx070) provides the capability to non-intrusively record calls directly from E1 lines.
The system uses Dual PCI Ultra E1 Cards, or GL's Dual Laptop E1 Analyzer to interface non-intrusively with E1 lines. Calls can be
manually captured or automatically triggered for capture from both directions (east and west) of transmission. ISDN and CAS (R1,
wink start, MFC-R2) signaling triggers are supported. Automatic Call triggering can be done in one of the following ways:
- A,B,C,D - Signaling Bits- with user-defined start and stop ABCD signaling bits to initiate and terminate recording of files on chosen
timeslots - useful for CAS calls. In addition, CAS signaling such as DTMF digits, MF digits, and MFC-R2 digits conveying "called and
calling numbers" are decoded and attached as part of the captured file name.
- Tone - user-defined mono or dual tones can trigger the capturing of a call CCA - useful for fax calls
- Signaling + Tone - a combination of user-defined Start/Stop signaling bits followed by a mono or dual tone (user-defined) within a
specified timeout period - useful for capturing fax calls
- ISDN calls - capture gets triggered when any ISDN calls are placed. Called and calling number can be gathered as part of the
capture process and attached to the captured file name. During call capture, the following parameters are displayed: ISDN message
types, CRV, Time slot, card number, called and calling numbers.
Subsequently, captured calls can be played back and analyzed in time and spectral modes using a commercial sound card, built-in
high fidelity speakers, and audio viewing software (Cool Edit, Cool Edit Pro, Adobe Audition, Goldwave). This software works in
conjunction with the CMU (Call Management Utility), to automatically identify captured calls
and calls being captured. You can also listen to calls that are in progress.
Typical applications are:
- Call recording for post analysis
- Analysis of single/dual tones, DTMF and MF digit analysis (frequency, power, duration)
- Analysis of call quality (speech levels, noise levels, echo return loss, speech clipping, impulse noise, and other impairments)
- Call activity, call density, and call volume analysis
- Monitoring and recording ISDN and CAS calls
- Sorting of Calls by "called" and "calling" number
- Listening to finished calls and active calls as they are occurring
- Remote monitoring of calls including remotely listening to calls
E1 Interface Capability:
- Uses any of the following hardware:
- One Dual PCI Ultra E1 Cards, or - Two Single PCI Ultra E1 Cards, or - One
Dual Laptop E1 Analyzer
Side View of Ultra E1 Cards
One Dual or Two Single Ultra E1 Cards having digital and analog inputs and
outputs are shown. Alternatively, GL's Dual Laptop E1 Analyzer can be used for convenience and portability.
Digital inputs are used to non-intrusively interface to E1 lines in bridge or monitor modes. Digital outputs can be used to generate
digital E1 signals. Analog outputs can be used to listen, in real-time, to DS0 audio in both directions.
Analog inputs can be used to insert audio signals into E1 streams. An external clock input/output provides clocking flexibility. A
Sound Card (provided with Lunchbox PC) provides playback of recorded calls via a PC multimedia system/speakers.
Dual Laptop E1 Unit
The Laptop E1 Analyzer is an innovative new product that consolidates the essential
pieces of industry-standard test equipment into a powerful, portable, PC-Based E1 testing solution.
Utilizing familiar computer user interfaces, it provides a comprehensive and versatile E1 test set at a competitive price.

- Terminate, Bridge, or Monitor interfaces to E1 lines with RJ-45 connectors (Bantam conversion cables available), for non-intrusive
connection refer to diagrams:
- RJ-45 Y Bridges and cables
- Alternative RJ-45 Y Bridges and cables
- DSX Patch Panel Monitor connections
- RJ-45 Splitter connection method
MFC-R2 Call Recording and Capture Features:
Call Capture Menu
The MFC-R2 Call Capture Menu is used to initiate recording of calls, either automatically or manually. The signaling bits status/
frequency/power of the East and West directions can be shown in real-time for all the channels in both directions.
Indicated is the channel for which a recording is taking place and the files names to which data is being stored. Any channel can be
monitored without recording taking place. Speaker and volume settings can be adjusted. Scanning mode is possible
wherein all 30 channels are scanned for call initiation and recording. A message area provides status of the capture process. Other
features include,
- Automatic or manual initiation of call recording
- Real time display of signaling bits for all channels in both directions
- 'Scan' or 'Channel' mode for call initiation detection and capture
- User specified record time, or termination at call completion, or manual termination
- PCM data captured to two synchronized disk files (east and west directions) for post processing
- All call data are captured including signaling bits, voiceband data, and signaling protocol data (e.g. DTMF or MF or MFC-R2 digits)
- ISDN calls recorded with CRV, ISDN message type, channel, direction, called and calling numbers. ISDN calls can be captured with
customized called and calling number filter.
- Various File naming conventions based on the type of capture. The file naming conventions suit various types of capture
applications such as MFC-R2, signaling, ISDN capture, manual capture etc.
Call Playback and Viewing Features:
Combined Time and Spectral Views
Time Series View
For a recorded call, a graph of the amplitude vs. time can be displayed. The display can be for either one side or both sides of
the call. Playback, zoom-in, zoom-out, and other options are available for
analysis of partial and/or full call data/ Signaling data during call set-up can be analyzed e.g. DTMF/MF, dial and busy, tones at
microsecond duration granularity. Every sample is recorded and displayed.
Spectral View
A graph of power level vs. frequency is displayed for the user-selected portion of the recorded call. The frequency resolution
and frequency band of interest is also user settable.
The display can be either one side or both sides of the call. Useful for analysis of DTMF/MF, dial and busy tone analysis and speech
and modem frequency analysis. Spectrogram displays are also possible.
MFC-R2 Protocol Analysis using R2ANA.EXE
R2 Tabular Analysis
A special DOS application is provided for MFC-R2 digit analysis (r2ana.exe). With this software captured files can be analyzed
for R2 tones and signaling. Forward and backward paired tones are detected
and displayed with time stamped indications of digit durations and signaling changes. Call duration, timeslot, date, and time of
occurrence are also recorded.
Additional Sample Screens:
Summary of Related Transmission and Capture Software
- xx020 - Record and Playback of Files - Simple GUI based software can record an entire T1 or E1 or
individual timeslots in both directions;
- xx030 - Call Capture and Analysis - GUI based software that provides the capability to record
complete calls directly from T1/E1 lines, non-intrusively. Call capture can be manually or automatically triggered by signals from both
directions (east and west) of transmission;
- xx070 - MFC-R2 Capture and Analysis - GUI based software for call based recording on E1 lines, can record based on CAS or
ISDN call triggering;
- xx019 - Tx/Rx File Utility - this is a console program and can be invoked from any user
program for capturing or transmission of files;
- xx600 and xx610 - Windows Client Server Scripted Control - A non-GUI based program - great
for remote and scripted control of captures, transmission, and more;
Bridge and Monitor Connections
Buyer's Guide
Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide,
which the software will be running on. Therefore, XX can either be DPT, DPE, PCT, PCE, HDT, HDE, DLT, DLE or UTE depending upon
the hardware.
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