GL Advances Analog Call Simulation and Testing
14 August 2024 - 1:55AM
GL Communications Inc., a global leader in telecom test and
measurement solutions, addressed the press regarding their
high-capacity analog 2-Wire FXO/FXS or 4-Wire E&M bulk call
generator used to test a Central Office, PBX, Analog Telephone
Adapter, Optical Network Terminal/Optical Line Terminal, Gateways,
and other telecommunications equipment.
[For illustration, refer to
https://www.gl.com/images/Newsletter/maps-aps-overview.jpg]
Vijay Kulkarni, CEO of GL Communications, states, “GL’s Message
Automation & Protocol Simulation (MAPS™) is a versatile
software program that can emulate a wide variety of
telecommunications protocols. The MAPS™ Analog Phone Simulator
(APS) is a high capacity analog 2-Wire FXO/FXS or 4-Wire E&M
Bulk Call Generator that tests telecom network infrastructure such
as the Central Office, PBX, Analog Telephone Adapter, Gateways and
other devices.”
This system is a compact rack-mount solution that includes
server hardware, GL MAPS™ software, and channel banks, with
optional modules for fax emulation and voice quality testing. The
application supports up to 96 independent FXO or FXS ports and
offers automation via a Command Line Interface and APIs for Python
and Java. GL’s solution covers essential analog features like
on-hook/off-hook, ringing signal detection, dialing and hook flash,
while also supporting two-way calling, three-way conferencing,
Visual Message Waiting Indicator, call waiting, caller ID, and call
forwarding for versatile communication capabilities.
[For more information, refer to the FXO FXS Call Emulation]
The system enables comprehensive Supplementary Service and
Interactive Voice Response (IVR) testing, recognizing and
responding to voice prompts with DTMF digits or voice commands for
automated IVR system testing. It provides high-density connectivity
to 2-Wire analog interfaces for customizable, automated testing.
The MAPS™ platform supports automated, multi-user, multi-protocol,
high-capacity bulk call generation, handling various traffic types
such as voice, tones, digits, fax, data, and video. It is
compatible with legacy PSTN, TDM, SONET SDH, next-generation VoIP,
and wireless protocols, and supports a range of signaling protocols
in TDM networks, including CAS, FXO/FXS, ISDN, SS7, PPP, GSM, INAP,
CAP, and MAP.
This solution works with GL’s Voice Quality Testing (VQT)
software, which uses POLQA (versions 2 and 3) and PESQ algorithms.
The VQT software can analyze voice calls across any network
including PSTN, TDM, VoIP and Wireless. The VQT software supports
scripting and automation, logs all results to a central database
and allows access via web-based clients through GL’s
WebViewer™.
Key Features
- Test various network environments including Central Office,
PBX, Gateway, Analog/Digital/VoIP networks, as well as Optical
Network Terminal and Optical Line Terminal. Additionally, MAPS™ APS
can be used as an FXO emulator to test Gigabit Passive Optical
Network units.
- Conduct manual and automated bulk analog call simulations, with
capabilities for call monitoring, recording, and IVR using the GL
Speech Transcription Server.
- API support (Python, Java) for integration with automation
frameworks.
- Supports E&M (Type I, II, III, IV, V) signaling - immediate
start, wink start, delay start.
FXO Capabilities - Subscriber Call
Generator:
- Up to 96 independent FXO ports can be managed per system,
supporting various call scenarios such as Caller ID, two-way
calling, three-way conference calling, and three-way calling with
Calling Party Number ID. Additional features include Voice Mail
with Message Waiting Indicator and Stutter Dial Tone, call waiting
with tone detection, Call ID, flash to accept call, and Call
Forwarding.
FXS Capabilities:
- The system supports up to 96 independent FXS ports per system,
allowing for central office simulation with two-way calling. Users
can program call progress tone generation for different countries
or regions, including dial tone, ringback tone, busy tone, reorder
tone, and howler tone (extended off-hook signal). Ring generation
with programmable ring cadence is also supported.
Reporting:
- The system provides detailed reporting with Pass/Fail status,
failure details, call failure/completion events, call drop (sustain
call) events and voice quality testing. Delay Measurements,
including one-way delay and post-dial delay, are also supported,
with the ability to export reports in PDF and CSV formats.
Voiceband Measurement Capabilities for VG3 and
VG6:
- Voiceband measurement capabilities include tests such as the
1004 Hz Net Loss test, Twenty-Three Tone test, Attenuation
Distortion (304-3004 Hz, 404-2804 Hz, and 504-2504 Hz), Three Tone
Slope (Gain Slope) test, Signal/C-Notched Noise Level test,
Intermodulation Distortion test, Impulse Noise test,
Signal-to-Noise Ratio and Level test, and Voice Quality Test.
About GL Communications Inc.
GL Communications is a global provider of telecom test and
measurement solutions. GL’s solutions are used to verify the
quality and reliability of Wireless (5G, 4G, 3G, 2G), SONET/SDH,
Ethernet/IP, TDM, and PSTN networks.
Warm Regards,
Vikram Kulkarni, PhD
Phone: 301-670-4784 x114
Email: info@gl.com