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Complete VQT Solutions
Overview
GL Communications provides a complete solution for any desired network including Wireless, VoIP, Analog, and TDM with a new capability
Automated Network-Wide Voice Quality Monitoring solution. This array of products offers a complete solution for monitoring voice quality over telecom
networks. Its simplicity and ease of use make it ideal for hybrid networks encountered in today's telecom environment.
The solution consists of 5 different parts:
- Distributed VQuad™ Nodes - supports numerous telecom termination points with each
VQuad™ Node supporting up to 8 interfaces for connecting different types of calls (Bluetooth, 2-wire Analog FXO,
VoIP SIP, T1/E1, Mobile Radio), either mobile or static, within the testing Network.
- VQuad™ Command Center - provide as flexible control/scheduling of the Network tests controlling
each VQuad™ Node as well as the Central Location. The Command Center also provides automated email functionality
based on VQuad™ Call Control errors and VQT failures based on user-defined thresholds.
- Array of analysis applications - includes ITU-P.862.1/2 PESQ, Voice Band Analyzer, Analog E-Model, Echo Measurements.
- Central Location Database - includes either MS Access or Oracle database which contains the entire analytical
and call progress events/results
- Remote Client web-browsers - consists of NetViewer™ or WebViewer™ applications providing
user-defined querying of the central location database over the internet or local network. The results include full Statistics and full graphical displays
of the current search results. Additional functionality includes remote operation of the individual VQuad™ Nodes and
the Central Location applications. Click here to view demonstration of VQT Webviewer™.
Each VQuad™ node possesses the ability to control its far end termination point using TCP/IP. This allows for a
fully synchronous and flexible automated process. Each VQuad™ node also has a very flexible and complex scripting
functionality that provides for most all types of full Network testing.
The analytical results of the individual VQuad™ nodes, including recorded voice files for VQT, call events,
measurement results, error events, timestamps, call ID, and additional information regarding location and test scenario, are all sent to the Central Location
via TCP/IP connections (or via manual transfer within a manual environment).
The Central Location includes the database (all results and information stated above), Command Center for a more flexible control/scheduling of
the Network tests, email function for automated email generation based on VQuad™/VQT errors or failures, and the
Analysis algorithms for Voice Quality along with delay and echo measurements.
Network Monitor Components
VQuad™ Nodes (Termination Points):
- Each VQuad™ device is utilized as an individual node supporting automated interfaces including -
- Bluetooth Mobile, 2-wire Analog (FXO), T1/E1 (PRI/CAS), and VoIP (SIP). The non-automated interfaces (balanced, handset, mobile radio)
can be used in a non-automated fashion or in an automated fashion with additional customer supplied call control functionality via external
applications (batch files).
- Each VQuad™ node can support up to 8 devices, each device fully independent allowing up to 8
simultaneous tests. Individual ports associated with the VQuad™ can call any other VQuad™
device as well as call multiple VQuad™ devices using the flexible script capabilities.
- VQuad™ scripting supports -
- use of variables for many of the scripting functions. The variables are accessed via user-defined variable files.
- extremely flexible and complex scripting routines that can effectively test the entire Network. Additional flexibility within the
VQuad™ scripting includes Pause and Wait events based on time and call progress (wait for connect, busy, dropped,
and failed calls).
- ability to connect to a remote VQuad™ locations to perform most of the functions.
- VQuad™ supports
- Two-stage dialing is supported by the VQuad™ along with Call ID for most all interfaces and path
confirmation once the call is established.
- additional analytical measurements supported by VQuad™ include Round Trip Delay (RTD), One Way Delay (OWD),
Post Dial Delay (PDD), Signal to Noise Ratio (SNR)
- automation of Transmit and Receive voice with synchronous triggering for Voice Quality Analysis.
- to support certain delay measurements as well as Echo measurements, the VQuad™ can Transmit/Receive
Voice Simultaneously on one side of the call or both ends of the call (requires GPS for accurate timing).
- GPS is available for each VQuad™ node in order to provide both location and precise timing.
Screen Shot of VQuad™
Central Location (Database, Command Center, Analysis, Search Engines):
- A centralized database stores all analytical measurements, call events, and error events associated with the individual
VQuad™ nodes. These results, along with the Voice Quality and Echo measurement results, are automatically transferred
to the central location for processing and analysis. If the TCP/IP connection is unavailable, the transfer process can be handled post-processing in a
manual method.
- Additional information for each result is included within the database and includes timestamp of result or measurement.
- Supports full remote access and several automated functions which prevent failure of testing operations.
- Provides hierarchy of scheduling scripts, network status scripts, for controlling all VQuad™ nodes. Also included with
the Command Center is the ability to provide user-defined automated email associated with VQuad™ errors as well as
VQT failed results.
Screen Shot of VQuad™ Command Center
Screen Shot of File Transfer Utility
Analysis (VQT, Additional Algorithms):
- Automated Voice Quality testing using ITU-P.862.1/2 PESQ algorithm.
- Automated Voice Quality testing using Analog E-Model.
- Automated Analytical results of recorded voice file using Voice Band Analyzer (VBA).
- VQuad™ with Dual UTA provides measurements for Round Trip Delay (RTD), One Way Delay (OWD),
Signal-to-Noise Ratio (SNR), and Post Dial Delay (PDD).
- Automated Echo Measurements for all interfaces.
- Support for Path Confirmation, and Call Failure Testing.
Screen Shot of VQT Algorithms
Database Results (NetViewer™/WebViewer™ Search and Display of Results):
- Centrally located database can be queried using either NetViewer™ (TCP/IP) or WebViewer™ (using WebServer capability).
- Search based on time/date range or based on last x-number of records in database.
- Supports user-defined Search Criteria associated with both the NetViewer™ and WebViewer™, you can further define the query based
on user-defined criteria such as error call progress events, Call ID, location and/or device ID (to name a few).
- Both the WebViewer™ and NetViewer™ return a full array of results including the Call Events, Measurement Results, VQT or E-Model
results along with full Statistics and graphical displays of the current search results.
- Remote operation of the Command Center as well as the individual VQuad™ nodes is supported within the
NetViewer™ and WebViewer™ clients. Network status of all nodes and the analysis tools running at the central location are also returned
to the NetViewer™ and WebViewer™ clients. Multiple NetViewer™/WebViewer™ clients can access the network and perform
database queries simultaneously.
Screen Shot of NetViewer™
Screen Shot of WebViewer™
Buyer's Guide
* Specifications are subject to change without notice.
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