SonetExpert™ Channelized Analyzer

When SEC Monitor and Control is running, it does not affect the functionality of the SEC service, the application just monitors the service. The latter is running undisturbed regardless SEC Monitor and Control application is up or it is closed. The monitoring features allow users to see the operational status of the service otherwise invisible. Users can open and close SEC Monitoring and Control application as many times as needed without disturbing operations. The only way to cause interference with the service operation is to invoke the “STOP SERVICE” function.

The picture below shows GUI based SonetExpert™ Channelized Analyzer Service Monitor, which provides users with the following functionality:

• Starting and stopping the SEC service
• Configuring the SEC service
• Launching Soft T1 E1 Analyzer
• Viewing and clearing the SEC service log
• Displaying alarms, error counters and operational statistics

SEC Monitor and Control Window

SEC Configuration Utility

The utility configures Sonet/SDH parameters, UDP endpoints for T1 E1 frame data transfer between STEA and SEC services, T1 E1 channels used and clock setting of Sonet/SDH ports.

Monitoring Applications

The T1 (E1) analyzer boards provides in-service monitoring of T1 (E1) circuit connections, alarms, frame errors, sync loss, bipolar violation signals, including received frequency, received signal level, data bytes, and DC offset. Also included are applications such as oscilloscope and spectral display to graphically analyze signals. The T1 (E1) analyzer boards emulates and decodes all 24 (32) channels simultaneously for Signaling Bits, Power Level, Frequency, and Multi-Frame Data. VF interface for monitoring and inserting audio with Drop and Insert are also provided.

Monitor T1/E1 Line Status

This application displays the T1/E1 line conditions for all the T1/E1 ports. You can monitor line sync loss, HDB3 violation, carrier loss, frame error, distant MF, alarm indication signal (AIS) and ES overflow/underflow in case of E1, and line sync loss, BPV, carrier loss, frame error, blue alarm, yellow alarm, alarm indication signal (AIS) and ES overflow/underflow in case of T1. Additionally, the application allows users to monitor the T1/E1 line conditions such as frequency, the power level and clock (or frame/bit slips) slips.

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Extensive Use of Graphics for Rx Signal Monitoring

Bytes Values Display for all time slots

This box displays the data values for each time slot in HEX data format. These values will be changing very rapidly, as each timeslot's data rate is 8000 bytes/sec.

Binary Byte Values Display for all time slots

This box displays the data values for each time slot in binary data format. These values will be changing very rapidly as each timeslot's data rate is 8000 bytes/sec.

Monitor signaling bits

The signaling bits associated with each timeslot are displayed in real-time.

• For T1 cards, the received signaling bits A and B for 193S (D4 Framing
• Format) and A, B, C, and D for 193E (ESF Framing Format) are displayed for all channels
• For E1 Cards, this application should be used in CAS mode only
• The signaling bits A, B, C, and D are displayed for all channels. These bits are demultiplexed from timeslot 16

Power Level Display for all time slots

The rms (root-mean-square) value of the digital codewords (after expansion from µ-Law or A-law) for each timeslot is computed and continuously displayed in dBm. The number of samples used in the computation is 192.

DC Offset Display for all time slots

The DC Offset application provides the capability to measure and display DC offsets for all timeslots. Multiple instances of this application may be opened simultaneously to monitor DC offsets on more than one GL card.

Frequency Display for all time slots

A continuous display of the signal frequency in each timeslot is displayed. The frequency is computed using the zero-crossing rate of the samples from each channel. The number of samples used in the calculation is 4000.

Multiframe Byte Display

This application permits viewing of complete multiframes. Approximately one second of data is captured, or 682 multiframes in T1 ESF/193E, 1364 multiframes in T1 D4/193S, 1024 multiframes for E1. The data is displayed with each frame identified. For T1 systems, twelve (12) frames are displayed per multiframe in D4 (193S) framing format, and twenty-four (24) frames in ESF (193E) framing format. For E1 systems, 16 frames are displayed per multiframe.

Real Time Multiframe Monitoring

This application permits viewing of multiframes in real-time. The data is refreshed for about every second. For T1 systems, twelve frames are displayed per multiframe in D4 (193S) framing format. Twenty-four (24) frames are displayed in ESF (193E) framing format. For E1 systems, 16 frames are displayed per multiframe.

Real Time Bitmap Monitoring

This application permits a graphical view of complete multiframes as a real-time bitmap. A snapshot of several multiframes of data is obtained at a given instance and the view is rendered as a pixel map with zeros represented by white dots and ones represented by black dots.

Time Slot Byte Display

This window displays the timeslot value for about '1' second duration for a desired timeslot. Ability to change the particular timeslot is also provided. "New Buffer" button allows refreshing of the data. The "Timeslot Window" module differs from "Multiframes" module, in which all the multiframes for a particular timeslot are displayed.

Data of about one-second duration is displayed. In "Multiframes",
T1 D4/193S: 1364 multiframes are displayed
T1 ESF/193E: 682 multiframes are displayed
E1: 1024 multiframes are displayed

ASCII Timeslot Display

This application permits viewing of real-time ASCII events that are present on the T1 or E1. The ability to display the ASCII events for a particular port and timeslot is provided. Each event is properly time-stamped for tests that require time correlation. Logging real-time events to the hard drive is also possible; this is useful during overnight or long-term testing.

Real Time Oscilloscope Display of DS0

The PCM codes (amplitude of the incoming signal) of any selected timeslot are displayed in real-time graphically as a function of time. Timeslot selection and time base can be changed either to view different incoming timeslots or modify the duration of the display. The time base can be adjusted from approximately 0.005 sec full scale to 1.000 sec full scale. This application can be used to visually assess activities on the channel such as noise, tone, speech, etc. The data may be displayed for all signaling formats – alaw, mulaw, pcm16, pcm13, pcm14, pcm8, and different byte order for INTEL (Little Endian), and MOTOROLA (Big Endian).

Real Time Power Spectral Display of DS0

The data received on a specified timeslot can be viewed in the spectral domain (spectral amplitude Vs frequency). A Fast Fourier Transform (FFT) is applied to successive sample sets of the incoming data and displayed in graphically. Adjust the frequency resolution by the FFT length (from 32 points to 8192 points). The data can be smoothed to lessen the effects of truncation by applying Hamming, Hanning, Harris, Blackman, Triangular, or Rectangular filter windows.

Audio Monitoring

Audio monitoring allows the control of VF output (speakers) of all T1/E1 cards connected to a PC under a single program. This application permits the combined display of all T1/E1 cards speakers in the PC and thereby facilitating the user a single application for all speaker controls.

Active Voice Level Monitoring

The Active Voice Level Monitor computes the Active Voice Level of a signal according to the ITU-T P.56 specification, Method B. This analyzes the source signal in real-time from T1/E1 timeslots, or process the captured signal data files offline. This application is available under the Monitor Menu in T1/E1 analyzer software.

Pulse Mask Compliance Testing (Available only with tProbe™ and Universal HD T1 E1 cards)

In T1 E1 transmission systems, signals are dropped, inserted, and accessed at the electrical level at a point called DSX patch panel or at some similar point. To reliably receive, monitor, or access these signals, they must first conform to a standard that establishes parameters such as pulse width, rise time, amplitude, allowable undershoot and overshoot. If the pulse meets the pulse mask, then a properly designed receiver should be able to decode the bits transmitted.

GL's Universal T1 E1 Cards provides pulse mask compliance testing using Pulse Mask Display for both T1 and E1 applications. Software has been developed to determine if the pulse shape fits within a "pulse mask" as specified by standards ITU G.703 and ANSI T1.102-1993. The software is available in both visual and tabular formats. Tabular formats are convenient for automation and scripted test environments.

Jitter Measurement (Available only with tProbe™ and Universal HD T1 E1 cards)

Jitter along with wander and frequency drift are major impairments of clocks in synchronous systems. Jitter is the time discrepancy between the time of arrival of a clock pulse and its theoretical arrival time. GL's Jitter Measurement module allows evaluation of jitter on either a tick-by-tick or a cumulative basis. Cumulative jitter is of primary importance as network equipment must cope with the cumulative jitter by the use of appropriately sized “jitter buffers”. Tick-by-tick measurements provide instantaneous jitter.

Real-time strip chart software

Real-time Strip Chart option allows users to capture and analyze signaling as well as PCM data captured at a specified timeslot.

Real-time Multi-Channel Audio Bridge

The Multi-Channel Audio Monitor is an optional (XX017) application available with the T1/E1 Analyzer. Audio monitoring application allows users to insert speech on T1/E1 lines using microphone and listen to the speech on T1/E1 lines using speaker (requires internal or external sound card to be connected to the PC).

The speech can be inserted or extracted on selected T1/E1 card, channel and sub channel. It supports A-law, Mu-law, G.726 40 Kbps, 32 Kbps, 24 Kbps, and 16 Kbps data rates. Optional Mono and Stereo audio modes are also available.

Capture Dialed Digits (DTMF / MF/ MFR2-f/ MFR2-B Detection)

The Capture Dialed Digits application provides the capability to capture and display DTMF and MF (along with MFR2-forward and MFR2-backward) digits as they are received on one or several time slots.

Signaling Transitions Recording

This optional software provides time-stamped indications of all signaling bit changes. The application works with one or multiple Ultra T1/E1 Cards or with the Single or Dual USB T1/E1 Analyzers. Signaling bit changes are recorded for all timeslots simultaneously

Intrusive Testing Applications

A variety of standard data patterns including static and user defined patterns are available for intrusive testing purposes. The Software Delay Measurement under basic software measures the delay by tracking a byte mark's transmission and reception timestamps using precise computer time. Tone / Multiframe / Noise generation, signaling bit manipulation, including error insertion features provide complete signaling ability for T1 E1 analyzer.

Transmit Tone, Transmit Gaussian Noise, User-defined Multiframe, Signaling Bits

Transmit Tone / Multiframe / Noise generation and detection, signaling bit manipulation and recording, including error insertion features provide complete signaling ability for T1/E1 analyzer.

Rx-to-Tx Loopback

The Tx Rx Loopback application is only for diagnostic purposes. It loops all the receive data from all timeslots back to the transmitting port. It is used in conjunction with a Bit Error Rate Test to verify the operation of Cards and USB units.

Precision Loopback and Broadcast

The Precision Loopback and Broadcast Interface enables data transmission from an Rx port to one or multiple Tx ports with configurable timing and safety margins. It ensures accurate loopback while monitoring delays, data availability, and overruns.

23-Tone Test Director (Tx) and Responder (Rx).

The 23-Tone Test is a diagnostic tool used to evaluate the performance of communication channels. It consists of two main components: the Test Director (Tx) and the Test Responder (Rx). The Test Director transmits 23 distinct tones, while the Test Responder receives and analyzes these tones to assess signal integrity, frequency response, and channel impairments.

Software Delay Measurement

The software delay measurement utility operates in both hardware and software-based T1 E1 analyzers, measuring delay by tracking a byte mark's transmission and reception timestamps using precise computer time.