GL's Facility Data Link (FDL) software consisting of several powerful modules that have the capability to transmit, receive, and decode FDL data in many ways as described below:
FDL Protocol Analyzer: Analyzes the incoming FDL data stream according to different FDL standards and specifications like T1.403, T1.408, G.963, I.431, and G.704. Whether the FDL data is HDLC frames or "bit oriented messages", the data is decoded, stored and presented for visual inspection. FDL data can be stored for later analysis as well.
FDL Playback GUI application: This software can playback raw data from files as well as files containing HDLC frames into the T1 FDL. The user may transmit valid HDLC frames (properly formed HDLC frame file required), or the user may transmit raw data from a file of raw (hex) bytes (codeword strings, etc.). When transmitting HDLC frames, the number of flags between frames may be selected. File playback for HDLC or raw bytes may be set to continuous, to end-of-file, or for a specified number of bytes.
FDL View & Save GUI application: Displays captured FDL bits, CRC bits, and framing bits as well as logging for future analysis. The view window refreshes automatically, and the user has the option of saving to a file the complete capture of all bytes received since the capture was started.
FDL VB Client for Windows Client Server: The Client Server Scripted Control Software has commands to record FDL data, playback FDL files, and playback user specified FDL data. A user friendly VB Client has been written to interface with the Server to emulate various FDL functions. Options for Tx and Rx different Performance Report Messages (PRM/SPRM/NPRM) are provided. The VB client also can playback/receive a list of code words and it also can transmit/receive user defined Rawdata /ASCII words.
FDL Protocol Analyzer
The FDLA module performs FDL decode and analysis on T1 channels in both real time and off-line using saved files with high level data link (HDLC) frames and bit-patterned extended super frame (ESF) data link messages. The FDL requires ESF mode.
The real-time mode of operation is used to capture stream of HDLC frames on the selected cards and also embedded bit-patterned ESF data link messages. Captured information can be saved to disk for later off-line analysis.
Both real-time and off-line analysis present information in two layers:
Raw HDLC Frame data as a hexadecimal and ASCII octet dump
FDL message information
HDLC frames are parsed according to Q.921, FDL messages are decoded based on the AT&T TR54016, ANSI T1.403, T1.408, I.431, G.963 and G.704.
Multiple instances of FDLA can run simultaneously capturing data from several T1 lines. Each instance can capture data from up to four T1 lines.
The frame information is displayed in two panes: summary view and detailed view. The detailed view pane displays the detailed information that includes all layers and can be exported to an ASCII file for the further off-line analysis.
Captured Frames can later be used for traffic simulation using the FDL transmit application.
GL's Facility Data Link (FDL) software consisting of several powerful modules that have the capability to transmit, receive, and decode FDL data in many ways as described below:
- FDL Protocol Analyzer: Analyzes the incoming FDL data stream according to different FDL standards and specifications like T1.403, T1.408, G.963, I.431, and G.704. Whether the FDL data is HDLC frames or "bit oriented messages", the data is decoded, stored and presented for visual inspection. FDL data can be stored for later analysis as well.
- FDL Playback GUI application: This software can playback raw data from files as well as files containing HDLC frames into the T1 FDL. The user may transmit valid HDLC frames (properly formed HDLC frame file required), or the user may transmit raw data from a file of raw (hex) bytes (codeword strings, etc.). When transmitting HDLC frames, the number of flags between frames may be selected. File playback for HDLC or raw bytes may be set to continuous, to end-of-file, or for a specified number of bytes.
- FDL View & Save GUI application: Displays captured FDL bits, CRC bits, and framing bits as well as logging for future analysis. The view window refreshes automatically, and the user has the option of saving to a file the complete capture of all bytes received since the capture was started.
- FDL VB Client for Windows Client Server: The Client Server Scripted Control Software has commands to record FDL data, playback FDL files, and playback user specified FDL data. A user friendly VB Client has been written to interface with the Server to emulate various FDL functions. Options for Tx and Rx different Performance Report Messages (PRM/SPRM/NPRM) are provided. The VB client also can playback/receive a list of code words and it also can transmit/receive user defined Rawdata /ASCII words.
FDL Protocol Analyzer
The FDLA module performs FDL decode and analysis on T1 channels in both real time and off-line using saved files with high level data link (HDLC) frames and bit-patterned extended super frame (ESF) data link messages. The FDL requires ESF mode.
The real-time mode of operation is used to capture stream of HDLC frames on the selected cards and also embedded bit-patterned ESF data link messages. Captured information can be saved to disk for later off-line analysis.
Both real-time and off-line analysis present information in two layers:
- Raw HDLC Frame data as a hexadecimal and ASCII octet dump
- FDL message information
HDLC frames are parsed according to Q.921, FDL messages are decoded based on the AT&T TR54016, ANSI T1.403, T1.408, I.431, G.963 and G.704.
Multiple instances of FDLA can run simultaneously capturing data from several T1 lines. Each instance can capture data from up to four T1 lines.
The frame information is displayed in two panes: summary view and detailed view. The detailed view pane displays the detailed information that includes all layers and can be exported to an ASCII file for the further off-line analysis.
Captured Frames can later be used for traffic simulation using the FDL transmit application.
