Overview |
Hardware Interfaces |
Applications |
Application Diagrams
UTA Connections |
Specifications |
Buyer's Guide
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Overview
The Dual Universal Telephony Adapter (Dual UTA) is a comprehensive hardware device designed to interface and test the voice quality of
telecommunication networks. The Dual UTA features all the circuitry necessary to universally adapt to any telephony instrumentation, such as
standard Plain Old Telephone Systems (POTS), digital hybrid interfaces, Voice over Internet Protocol (VoIP) networks, wireless cellular phones
and mobile radios including devices that utilize Bluetooth® technology.
As the name implies the Dual UTA contains a Side 1 and a Side 2. These sides are completely independent of each other so interfacing with
endpoints of a single network or interfacing with two completely separate networks are plausible scenarios.
Used in conjunction with GL's VQuad™ software application, the Dual UTA simplifies end-to-end testing of voice quality, echo, noise,
and other impairments of TDM, VoIP, and Wireless networks. A GPS sync port permits precise synchronization of sending and receiving audio
functions, one-way delay (OWD), and round trip delay (RTD). The Dual UTA can be directed to automatically send and record sample voice
files between nodes of a telephony network. These files can then be submitted to GL's Voice Quality Testing (VQT) software application for
analysis according to widely accepted International Telecommunications Union (ITU) voice comparison algorithms. These algorithms include
PESQ, PAMS and PSQM.
Hardware Interfaces
- Mobile Phones:
- Bluetooth Works with all Bluetooth phones for both call control and send/record audio functions.
- Audio Headset Jack - 2.5mm (typical)
- Mobile Radios with Push-to-Talk functionality: Provides radio keying and sends/records audio.
- RJ-11 POTS lines: Detect dial tone, go off hook, CallerID detection, send digits (two stage dialing), answer calls,
detect a variety of Special Information Tones (SIT), and much more as well as send/record audio for Voice Quality measurement.
- Handset Phones (POTS, Digital, VoIP): Replaces handset of any telephone (POTS, Digital, VoIP) that contains a coiled cord and handset
- Balanced I/O for connecting to a VoIP Softphone, Head and Torso Simulator (HATS), or any device supporting audio.
Applications
- Send/Record audio for Voice Quality Testing on telecom networks including WideBand 16k Samples/sec
- Network One-way delay measurements. (collocated or geographically separated)
- Network Round Trip Delay (RTD) measurements. (collocated or geographically separated)
- Echo measurement and analysis
- Acoustic echo canceller testing
- Automatic control of Push-to-talk phones/radios (key/unkey radio)
Application Diagrams
- Voice Quality Testing
Voice Quality Testing - End points at same location
Voice Quality Testing - End points at different location
- Network Delay Measurement One Way Delay (OWD)
One Way Delay (OWD) - End points at same location
One Way Delay (OWD) - End points at separate location
- Echo Identification
Echo Identification
- Acoustic Echo Canceller Testing
Acoustic Echo Canceller Testing
- Post Dial Delay (PDD) & Post Ringback Delay (PRD) measurements using GL's VQuad™ software
The analysis associated with the PDD detects the trailing edge of the last DTMF digit sent as part of the placed call. It then detects the leading edge of
the Ringback tone coming from the far end switch. The PDD is the measurement between these two events.
The PRD measurement (coming soon) would be similar, however, it would detect from the end of the Ringback to the beginning of the voice or end of the
Ringback (beginning of the call). In other words, from the end of the Ringback to the beginning of the call.
Both the analysis functions require the use of GL's 2-wire phone tap along with GL's VQuad™ software. The VQuad™ scripts provide a
mechanism to automate the required tone recording and analysis.
Screenshot- PDD Script in VQuad™
Screenshot- File Scan Setup in VQuad™
UTA Connections
Dual UTA Front Panel
1 - FXO Jack: This RJ-11 jack gives the Dual UTA the ability to act as a telephone.
This is a 2-Wire POTS interface that allows users to place calls, answer calls and utilize all of the Dual UTAs voice quality and delay features.
2 - Push-to-Talk (PTT) LED: When illuminated indicates that the PTT function is active.
The active state indicates that the radio has been placed in transmit mode. Conversely, the inactive state (LED off) indicates the radio is in
receive mode.
3 - Trigger (TRG) LED: When illuminated indicates that a Round-Trip Delay (RTD) or One-Way
Delay (OWD) pulse has been detected. This LED may also illuminate momentarily when connecting or disconnecting audio lines.
4 - In Jack: This 3.5 mm jack provides a balanced Audio In port. This jack can connect to a
wide variety of the network interfacing equipment. Multiple impedance options are also available with this input.
5 - Out Jack: This 3.5 mm jack provides a balanced Audio Out port. This jack can connect to
a wide variety of the network interfacing equipment. Multiple impedance options are also available with this output.
6 - Handset (HSET) Jack: For use with handset-type phones. Connect the curly cord of the
handset to this jack. This jack works in conjunction with the Handset (HSET) Base jack on the back of the Dual UTA.
7 - Monitor Jack: This 3.5 mm jack (stereo miniature phone type) provides for connection of a
headset or amplified speakers to monitor the Audio In/Out signals on all interfaces.
8 - Power LED: When illuminated indicates the Dual UTA is receiving power and is ready
to operate. The Dual UTA is powered from the USB bus.
9 - Side: The Dual UTA contains a Side 1 and Side 2. These sides are completely independent
of each other, so Mobile Phone Network Testing could be setup on Side 1 while FXO Network Testing could be happening on Side 2.
Dual UTA Back Panel
10 - GPS (In): Input from external GPS receiver. The Dual UTA uses location and time
to provide additional information to the user. The one pulse-per-second GPS input will allow 1 ms accurate one-way and round-trip-delay measurements.
Jack = RJ-45
11 - GPS (Out): The Dual UTA allows the GPS received data on the GPS (In) port to
be transmitted out the GPS (Out) port. This enables a single GPS receiver to provide data to multiple Dual UTAs. Jack = RJ-45
12 - Handset (HSET) Base: RJ-22 port that connects to a phone base on any
telephone (POTS, VoIP, Digital) that contains a handset.
13 - Bluetooth (BT): The Dual UTA has Bluetooth built in, which allows users to
connect to Bluetooth enabled devices. This provides call control (control of phones calling/answering functions) as well as the ability to send/record
audio in/out of these devices.
14 - USB Jack: Communications and power interface connection. Connect to the
computer USB port directly or through a USB hub.
15 - Push-to-Talk (PTT): For use with radios that require activation of a
push-to-talk function to transmit or receive audio signals. This RJ-45 jack is connected to the software-controlled relay internal to the Dual UTA.
When PTT is active (PTT LED on), pins 2 & 3 are shorted. When PTT is inactive (PTT LED off), pins 1 & 2 are shorted.
Specifications
Physical Dimensions:
Height: 1.60 in. (40.64 mm)
Width: 5.55 in. (140.97 mm)
Depth: 7.45 in. (189.23 mm)
Weight: 1.72 lb. (.778 kg) |
Power requirements:
Input Voltage: +5VDC (derived from USB bus)
Current load: 200mA |
External Connections:
USB 2.0: Type B USB Jack (Communication with PC and Power)
3.5mm In/Out Jacks (Balanced Audio - Side 1&2 )
- Input Impedance 600ohms, 1000 ohms and User-Definable
- Output Impedance - 600ohms, 1000 ohms and User-Definable
RJ-11 Jacks (FXO - Side 1&2 )
RJ-22 Jacks (Handset/Handset Base - Side 1&2 )
3.5mm (Monitor)
Dual RJ-45 Stacked Jacks (GPS In/Out and PTT - Side 1&2 )
- PTT - Side 1&2 Input Impedance - 600ohms, 1000 ohms and User-Definable
- PTT - Side 1&2 Output Impedance - 600ohms, 1000 ohms and User-Definable
Bluetooth Antennas - Side 1&2 |
Compliance
| CE, FCC, TBR21 compliant |
Frequency Range Compliance:
FXO PCI card (VQT012)
Dual UTA FXO 2-wire interface (8K samples/sec)
Dual UTA FXO 2-wire WB interface (16K samples/sec)
Dual UTA Balanced, Mobile, PTT, Handset interfaces (8K samples/sec)
Dual UTA Balanced, Mobile, PTT, Handset WB interfaces (16K samples/sec)
Dual UTA Bluetooth interface (8K samples/sec)
|
300-3400Hz
100-3500Hz
100-4000Hz
100-3500Hz
100-7000Hz
200-4000Hz
|
VQuad™ with the Dual UTA can be purchased with a NetBook PC for a truly lightweight portable solution. The Dual UTA is fully compatible with the
miniature NetBook and allows the VQuad™ software to be installed for full testing without any performance issues.
For more information please click here
Buyer's Guide:
* Specifications are subject to change without notice.
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