GL Communications Inc.

T1/E1 Testing


T1/E1 carriers are used extensively throughout the world for carrying large volumes of call containing both voice and data. Their popularity can be attributed to their high reliability, manageability and flexibility. The available digitized channels, 24 for T1 and 32 for E1 can be used for carrying voice and/or data. Further, the carriers can be used separately or they can be combined in order to provide higher transmission bandwidth.

Regardless of the form-factor you choose, GL’s T1/E1 Analyzers provide a wide range of functionalities and testing capabilities.

pdf T1/E1 Test Platforms
pdf T3/E3 Test Platforms
pdf T1/E1 Platforms Comparison
pdf GL Product Lists

GL's Octal & Quad T1 E1 Analyzer Boards are high-density boards that provide Four (4) or Eight (8) RJ-48 T1 E1 ports and multiples thereof. With this, configurations of 8, 12, 16, ...64 T1 E1s in a single rack is possible. It's designed for the newer PCIe lanes for faster processing and scalability.

GL's Dual T1 E1 Express (PCIe) Boards are high-density dual T1 or E1 boards with newer PCIe (x1) bus interface.  These cards are identical to the portable tProbe™ units, except for FXO FXS and Datacom functionality.  In addition to the other basic T1/E1 line signals monitoring applications, the Dual T1 E1 Express (PCIe) Boards also support enhanced VF drop and insert capabilities  with software selectable VF Tx and Rx impedances (135Ω, 150 Ω, 600 Ω, 900 Ω, or High), Pulse Mask Compliance Testing, Jitter Generation and Measurement applications.

GL's tScan16™ extends the family of GL’s T1/E1 platforms with greater density, increased ports, and reduced power. These boards along with a breakout-box provides 16 high-density T1/E1 ports and the newer PCIe (x1) bus interface. The sixteen T1/E1 ports are Receive-only ports optimized for high performance voice and data capture, monitoring, and analysis requirements.

The portable-compact USB-based T1 E1 Analyzer units support dual T1 or E1 ports and are highly portable and designed to be hosted by small computers (e.g. notebooks, laptops) making them especially convenient in the field.

The USB-based tProbe™ T1 E1 VF and Serial Data Analyzer units also support dual T1 or E1 ports and adds new functionality and features not available with the "portable" T1/E1 USB-based Analyzer. The enhanced features and capabilities include pulse mask and jitter measurement and analysis, cross-port through and transmit modes, enhanced VF drop and insert capabilities. Planned future expansion of the tProbe™ includes FXO RJ-11, FXS RJ-11 and dual DB25 connectors. Both types of analyzers sport features such as remote access, scripted control, and they can all support a vast array of optional applications.

The Dual Universal HD T1 E1 Analyzer Boards can be plugged into either a 5V or a 3.3V PCI bus. These newer generations of the dual T1 or E1 analyzer boards are faster, smaller, more efficient, and can process hundreds of channels or timeslots   simultaneously when housed in modern PCs. PCI boards are the better choice when multiple analyzers are needed at a given location.

Main Features

  • Available in all types of platforms – PCI and PCIe boards, USB-based portable units
  • Provides a scalable test solution for T1, E1, VF, and Datacom testing; Supports 2, 4, or 8 T1 or E1 ports, DTE and DCE interfaces, FXO, and FXS interfaces.
  • Ability to monitor Power, Frequency, Signaling, Binary Byte Values, and DC Offset
  • Time and spectral graphical views of any channel or timeslot can be monitored
  • Internal speaker for DS0 Monitoring, Data, Four Wire VF-Interface, Drop and Insertion of Analog and Digital Signals, Real-time Monitor and Time-Stamped Log of all alarms and abnormal events
  • Comprehensive Voice, Data, Protocol, Analog, Digital  Analysis / Emulation
  • Call Recording, Generation, and Monitoring for hundreds to thousands of calls in one platform
  • tProbe™ units, Dual PCIe Express, and Universal T1/E1 boards supports Pulse mask, jitter generation and measurement
  • Adjustable transmit clock frequency for testing frequency lock sensitivity of tProbe™  and Universal T1/E1 equipment
  • Precision Delay Measurement, Unframed/Framed, Transmit/Receive Tone and signaling bits at user-defined frequency and power in one (or all) channels, and Tx/Rx loopback applications are provided for intrusive testing
  • Supports Full/Fractional T1/E1 Bit Error Rate Testing with detailed logging
  • Transmit Gaussian noise, Error Insertion capabilities
  • Supported on Windows® 7 and above OS
  • A variety “basic applications” and “special applications” are available with T1 E1 cards

GL’s T1 E1 Testers

QUAD and OCTAL T1 E1 Analysis and Emulation Hardware   

GL's Octal & Quad T1 E1 boards are high density and provide Four (4) or Eight (8) RJ-48 T1 E1 ports and multiples thereof. For example, configurations of 8, 12, 16, 64 T1 E1s in a single rack are possible.

tProbe™ T1 E1 VF & Serial Data Analysis & Emulation Hardware  

GL's new tProbe™ is an enhanced version of our popular USB based T1 E1 VF Analyzer / Emulator. This hardware incorporates all the features of the previous analyzer such as portability, USB interface, remote accessibility, scripting, and a vast collection of optional applications.

Dual T1 E1 Express (PCIe) T1/E1 Analyzer

GL's Dual T1 E1 Express (PCIe) Boards are high-density dual T1 or E1 boards with newer PCIe (x1) bus interface. These boards identical to the portable tProbe™ units, and support enhanced VF drop and insert capabilities  with software selectable VF Tx and Rx impedances (135Ω, 150 Ω, 600 Ω, 900 Ω, or High), Pulse Mask Compliance Testing, Jitter Generation and Measurement applications.

Universal T1/E1 Analyzer

GL’s new Universal T1/E1 card is capable of both T1 and E1 interfacing. In addition with the other basic T1/E1 line signals monitoring applications, the Universal T1/E1 cards also support Pulse Mask Compliance Testing, and Monitor Jitter Measurement applications. Cross-port and Through mode hardware loop-backs are also provided on the Universal T1/E1 cards.

Portable USB T1/E1 Analyzer

GL's new USB based T1 E1 Analyzer is the world's most powerful, full featured, and complete BERT, voiceband, data, signaling, and protocol analyzer on the market. It can perform analysis and emulation of various signal types including voice, digits, and tones; various protocols including HDLC, ISDN, SS7, CAS, Frame Relay, GSM, GPRS, CDMA, and UMTS. It is capable of T1 or E1 PCM signal visualization, capture, storage, analysis, and emulation. In addition, convenient features are available like portability, USB friendly interface to a PC, remotability, and scripting.

Ultra T1 or E1 Analyzer (Legacy)

The Ultra T1 or E1 Analysis Cards (PCI) plug into any PC and convert it into a complete T1 and E1 test platform. The Ultra Cards are available with either a single or a dual interface. A wide ranging set of software applications are available to meet your particular testing needs.


Releated Products

Laptop T3 E3 T1 E1 Ethernet Analyzer   

GL’s T3/E3 analyzer unit used in conjunction with GL’s Laptop T1/E1 analyzer provides a complete T3/E3 (44.736/34.368 Mbps), T1/E1 (1.544 Mbps / 2.048Mbps), and DS0 (64Kbps) testing solution.

T1 E1 J1 Intrusive/Monitor Switch

The T1 E1 J1 Switch provides non-intrusive failsafe monitoring and intrusive test and diagnostic capability for up to 8 full duplex T1, E1, and J1 lines. The unit provides two RJ-48c connectors for a thru connection for equipment and line connections and a Rj-48c monitor connector for monitoring both directions of a full duplex high speed line. The switch can be remotely controlled via a USB connection. GUI and scripted control software is available for placing the switch in various modes for monitoring and diagnostic purposes.

T1/E1 Multiport Repeaters

The T1 (or E1) Multiport Repeaters generate multiple identical T1 (or E1) outputs for each T1 (or E1) input. The repeaters are ideal for multicast (broadcast) applications and in lab environments for load testing and signal duplication purposes.

Hand Portable Test Instruments

GL provides a range of compact, hand held T1, E1, T3, and E3 testers, which can test a wide variety of communications facilities and equipment including Asynchronous, Synchronous, Modems, Multiplexers, CSU/DSUs, and more. With GL's LinkSim™, users can simulate a variety of communications links, inserting delays, and errors to determine what effects these impairments will have on network.

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