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Dual T1E1 Express (PCIe) Analysis & Emulation Boards

Octal/Quad T1 E1 PCI Board

Overview | Main Features | Basic Softwares & Features | Specifications | Buyer's Guide

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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.

pdf User's Guide
pdf Quick Install Guide
pdf Product Brochure
pdf T1 E1 Release Notes
pdf GL Product Lists

Main Features

  • Software Selectable T1 or E1 interfacing along with Drop and Insert
  • PCI Express x1 Lane/Board
  • Monitor the T1/E1 line conditions such as frame errors, violations, alarms, frequency, power level, and clock (or frame/bit) slips.
  • TDM, ISDN, SS7 – High Density Voice
  • VoIP, Frame Relay, Multilink Frame Relay, PPP and Multilink PPP, HDLC
  • Routing and Bridging emulation over Multi T1/E1 WAN interfaces using MLPPP (Multi Link PPP) and MFR (Multi Link Frame relay) protocols
  • Most all "basic applications" and "special applications" are available for Dual T1 E1 Express boards
  • Comprehensive Analysis / Emulation of Voice, Data, Fax, Protocol, Analog, and Digital signals, including Echo and Voice Quality testing
  • Call Recording, Generation, and Monitoring for hundreds to thousands of calls in one platform
  • Supports T1 E1 Pulse Mask and Jitter Generation and Measurement Analysis
  • "Cross-port Through" and "Cross-port Transmit" Modes – these configurations make cabling with Drop/Insert and Fail-Safe Inline Monitoring very easy
  • Enhanced VF Drop and VF Insert Capabilities using 3.5mm Balanced (Stereo), or Unbalanced (Mono) physical connections.
  • The VF Tx and Rx impedance for Dual T1 E1 Express (PCIe) Card analyzer supports software selectable 135, 150, 600, or 900 Ohm terminations.
  • Includes individual speakers (one speaker per card).
  • Supports software selectable VF Tx and Rx impedances - 135, 150, 600, or 900 Ohm terminations. Additionally, the VF Rx impedance supports New High Impedance Monitor Termination (>50K Ohms), and external Microphone and Headset (Mic/HS) impedance. 
  • VF Tx Gains ranges from -12 dB to +59.5 dB in 0.5 dB steps, and VF Rx Gains ranges from -63.5 dB to +9 dB in 0.5 dB steps.
  • Windows and Linux Drivers for Open Source Applications
  • Compatible with Windows® XP , 7 and 8 operating systems and user friendly real-time software

GL offers other popular forms of T1 E1 analysis hardware such as

Comparison with other PCI based GL's T1 E1 Cards

Feature Universal Dual T1 E1 Boards Quad, Octal T1 E1
Dual T1 E1 Express (PCIe) Boards
Number of Ports 2 4, 8 2
PCI Slot Type PCI Bus / Connector PCI Express x1 Bus/ Connector PCI Express x1 Bus / Connector
Speaker (on board) Supported No speakers Supported
Cross-port and Through Modes Supported Supported Supported
Pulse Mask Application Supported Not Supported Supported
Jitter Generation and Measurement Supported Not Supported Supported
External Clock Mode Supported No clock port connector Supported
Clock Offset Capability 2 Ports Independent All ports at the same time 1 Port at a time
VF Interface and Impedance Supported ;
600 Ohms
Not Supported Supported; 135/150/600/900/High
VF Interface for Mic/Headset Not Supported Not Supported Supported
Drop and Insert
(VF and T1/E1)
Supported No VF connectors; Digital Drop/Insert supported Supported
Onboard RAM Not Supported Not Supported Supported

Accompanying Basic Software / Features

Dual T1 E1 Express (PCIe) Card comes with "basic applications" for basic testing needs and optional "special applications" that extend the capability far beyond the most expensive T1 E1 VF and Serial Data testers. All the basic applications and optional applications supported by tProbe™ T1 E1 analyzers are also supported by Dual T1 E1 Express (PCIe) Card. For example, capturing and transmitting an entire raw T1 E1 VF or Serial Data signal simultaneously on two full duplex ports, or performing ISDN emulation, or SS7 analysis, or analyzing echo and voice quality on voiceband channels, to name a few.

A list of all the basic applications and other optional applications (requiring additional licenses) are listed here -

Additional applications supported by Dual T1 E1 Express (PCIe) Card are as follows -

Pulse Mask Compliance Testing

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 Dual T1 E1 Express (PCIe) Card 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.

For more details, please click here

Jitter Generation and Measurement

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.

Jitter Generation allows the user to generate a jittered output T1 E1 signal with user-selected jitter frequency and amplitude.  It is suitable for testing jitter tolerance and compliance with standards such as G.823.  Jitter Generation application in conjunction with Jitter Measurement application may also be used to test jitter transfer. 

For more details, please click here


Cross-port Through Loopback

Cross-port Through Loopback

This mode is similar to the standard Outward Loopback except that the signal received on Card 1 (Port 1) is transmitted out onto Card 2 (Port 2). Likewise the signal received on Card 2 (Port 2) is transmitted out onto Card 1 (Port 1). This feature allows monitoring T1/E1 lines in-line while still being protected from loss of power to the board. This mode is effected entirely thru relays and eliminates complex cabling.

Cross-port Transmit Mode Loopback

Cross-port Transmit Mode Loopback

In this mode, the data that would normally be transmitted on Card 1 (Port 1) is diverted and transmitted on Card 2 (Port 2) and the data that would normally be transmitted on Card 2 (Port 2) is diverted and transmitted on Card 1 (Port 1). The receive paths are completely unaffected. This mode is particularly useful for Drop and Insert and Error Injection applications in which the board analyzes and may insert traffic running between two pieces of T1/E1 equipment. This feature also eliminates complex cabling.


Physical Interface  
T1/E1 Dual RJ48c Connectors
Audio Signal (4) 3.5 mm Balanced (Stereo) or Unbalanced (or Mono) Audio Jacks (TX & RX)
PC Interface PCI Express x1 Lane
Compliant to PCI Express Base Specification v1.1
External clock (1) MCX Coaxial Jack

Environmental Specifications  
Temperature Operating: 0 to 50° C
Storage: -50 to 70° C
Relative Humidity Operating: 10% to 90% (non-condensing)
Storage: 0% to 95% (non-condensing)
Altitude Operating: -100 to 12,000 ft.
Storage: -100 to 40,000 ft.

T1/E1 Line Interface  
Framing Formats Unframed, D4 (T1) , ESF(T1), ESF(J1), CAS(E1), FAS(E1), CRC4
Hardware Compliant: SLC96, T1ESF ZBTSI
Line Code format AMI, B8ZS (T1) or HDB3 (E1)
Internal Clock Specification Standard: +/- 3ppm  Optional: +/- 1ppm
Output Clock Source Internal (+/- 1 ppm or 3 ppm), Recovered, External Clock
T1 Output Level T1: 3.0V Base to Peak Selectable 0-655Ft Pulse Equalization Setting; Tx Capability - DSX-1 Outputs (to 655 feet)
E1 Output Level E1: 3.0V ±  0.3V Base to Peak
Input Level 75 mV to 6V base to peak or -30 dBsx to -6 dBsx
Line Build-Out Selections 0dB, -7.5dB, -15dB, -22.5dB for T1 only
Loopback Normal (Outward and Inward)
Cross-Port Transmit Loopback
Cross-Port Through Loopback

PCM Interface  

Synthesized Tone: 15 Hz to 3975 Hz selectable in 1Hz steps, +3.0dBm to -40dBm in 0.1 steps selectable, Frequency sweep.
Dual Tone: Single or any combination of tones.
Supervision: User defined states of A, B, (C, D) bits.

Signaling: DTMF/MF Dialing Digits.
File Playback: User created or recorded file.

Special Codes: Milliwatt Codes, CSU Loop Up/Down Codes.

Displays for All Channels: Signaling Bits, Power Level, Frequency, & Data.
Graphical displays: Oscilloscope, Spectral, Spectrogram, Signal-to-Noise
Signaling: DTMF/MF Dialed Digit Detection and Analysis, ISDN, MFC-R2

Recorder: Record Full/Fractional T1/E1 Timeslots to hard disk file.

T1/E1 Interface Hardware Compliance
  • ANSI: T1.403.1995, T1.231-1993, T1.408
  • AT&T: TR54016, TR62411
  • ITU: G.703, G.704, G.706, G.736, G.775,  G.823, G.932, I.431, O.151, Q.161
  • ITU-T: Recommendation I.432-03/93 B-ISDN User-Network Interface-Physical Layer Spec
  • ETSI: ETS 300 011, ETS 300 166, ETS 300 233, CTR12, CRT4
  • Japanese: JTG.703, JTI.431, JJ-20.11 (CMI Coding Only)
Bert Pattern Generation Pseudorandom patterns: (63) 2^6-1, (511) 2^9-1, (2047) 2^11-1, (32767) 2^15-1, (1048575) 2^20-1, (8388607) 2^23-1, QRSS.
Hardware Compliant: T1 In-Band Loop Code Generation and Detection
Fixed patterns: All Ones, All Zeros, 1:1, 1:7, 3 in 24, User Defined 24- Bits
Hardware Compliant: User pattern of up to 32 bits in length
International, National & Extra Bits: User Defined (E1)
Alarm Insertion Blue, Yellow, Remote, Distant Multiframe, Bit 7 Zero Suppression
D4 Yellow: 1 in S bit of frame 12
Receive Carrier Loss: 0's for 2047 or 255 bits (For E1 only)
Error Insertion BPV, Bit Error, Frame Error, CRC Errors, Burst Frames, Fixed Error Rate, Random Error Rate, auto logic from 10-2 to 10-9 for selectable 56K or 64Kps channels.
Drop and Insert Any contiguous set of digital timeslots and/or audio input
Facility Data Link T1 ESF Mode: Transmit/Receive Messages, Bit-Oriented Messages, and Files.
Zero Suppression B7 Stuffing, Transparent, & B8ZS (T1)
Signaling Robbed-Bit or Clear Channel
Frequency Offset E1: +/- 615Hz

Input Impedance 100 ohms for Terminate and Monitor (T1)
120 ohms for Terminate and Monitor (E1)
> 1K ohms for Bridge
Terminations Terminate, Monitor, Bridge
T1 Input Frequency 1.544MHz +/- 20KHz
E1 Input Frequency 2.048Mhz +/- 20KHz
Frequency Measurement +/- 1ppm
Error Detection Frame Error, CRC Error, BPV Error, Logic Error, Frame Alignment Error
Hardware Compliant:
* 10 or 24 bits for sync time
* 2/4, 2/5, or 2/6 frame bit in error frame select
* Frame error bit corruption for 1 or 3 frame bits
* E-Bit Error
* Line Code Violation
Alarm Detection T1 - D4 Yellow Alarm, ESF Yellow Alarm
Yellow Alarm (B2 Suppressed-2nd MSB)
Yellow Alarm (S-Bit)
Yellow Alarm (00FF in FDL)
Blue Alarm (Framed or Unframed All Ones)
E1 - Remote Alarm
Distant MultiFrame Alarm
Signaling All Ones
Unframed All Ones
Hardware Compliant: J1 Yellow Alarm
Intrinsic Jitter Jitter Tolerance:
Meets AT&T TR 62411 (Dec. 90) and ITU-T G.823 Jitter Transfer:
Meets AT&T TR 62411 (Dec. 90)
Input Range T1:
Terminate:  0 to 36dB (Long Haul), 0 to 15dB (Limited Long Haul),
DSX Monitor: 20dB, 26dB, 32dB
Bridge E1: Terminate, 0 to 43dB (Long Haul), 0 to 13dB (Short Haul),
DSX  Monitor: 20dB, 26dB, 32dB

Display and Logging  
BERT Bit Errors, Bit Error Rate, Error Seconds, Error Free Seconds, %EFS, Severely Error Seconds, % SES, Degraded Minutes, %Dmin, Loss Pattern Sync Count, Loss of Sync Seconds, Available Seconds, %Available Seconds, Unavailable Seconds, Bipolar Violations, BPV Rate, BPV Seconds, BPV Free Seconds, Frame Errors, FE Rate, FE Seconds, FE Free Seconds, with Detailed logging into disk file.
Alarms Resync In Progress, Loss of Signal, Blue Alarm, Change of Frame Alignment, Bipolar Violation, Frame Error, Carrier Loss, Yellow Alarm, Out of Frame Events Counter, Error Super frame Counter, Bipolar Violations, Remote Alarm, Distant Multiframe Alarm, Signaling All Ones, CAS Multiframe Error, CRC4 Error.

VF Audio, Drop and Insert  
Transmit Signal Level Measurement Accuracy: 0.0dBm +/- 0.1dBm
Range:  -7.2 dB to +18.2 dB selectable gain in 0.1 dB steps
Output Impedance: 135, 150, 600, 900 Ohms
Receive Audio Monitoring: Built-in Speaker
Audio Insertion: Selected DS0 replaced with inserted audio from VF Input -Range: 18.0 dB to +7.3 dB selectable gain in 0.1 dB step.
Volume Control: User specified software controller
Input Impedance: Software selectable 135, 150, 600, 900 Ohms for Intrusive Testing. High Impedance (>50K Ohms) for Non-Intrusive Testing
Provision for external Microphone (Mic/HS) on VF ports connection
Sampling Rates 8 KHz, 16 kHz
Datawidth (bits) Supports 8, 16, 20, 24, 32 Bit Data
VF Tx Gains Supports -12 dB to +59 dB in 0.5dB Steps Gain (0.1 dB steps can also be accommodated)
VF Rx Gains Supports -63.5 dB to +9 dB in 0.5dB Steps Attenuation (0.1 dB steps can also be accommodated)
Connectors (4) 3.5 mm Balanced (Stereo) or Unbalanced (Mono) Audio Jacks (TX & RX)

Computer Requirement  
  Pentium IV or higher with MS-Windows® XP,  7 or 8 with PCIe expansion slots (3.3V or 5.0V)

Physical Dimensions  
Dimensions 6.7 inches x 4.4 inches

Buyer's Guide

Item No. Item Description
XTE001 Dual Express (PCIe) T1 E1 Boards
XUT001 Dual T1 E1 Express Card Basic T1 Software
XUE001 Dual T1 E1 Express Card Basic E1 Software
  Related Hardware
tProbe™ T1 E1 Base Unit
tProbe™ Basic T1 Software
tProbe™ Basic E1 Software
High Stability Internal Clock Option
QuadXpress T1E1 Main Board (requires additional licenses)
OctalXpress T1E1 Main Board plus Daughter Board (requires additional licenses)
Basic Software for T1
(zero dollar, but required with appropriate licenses)
Basic Software for E1 (zero dollar, but required with appropriate licenses)
HD Universal Dual T1/E1 Card
HD Universal Card Basic T1 Software
HD Universal Card Basic E1 Software
High Stability Internal Clock Option
  Related Software
  For Buyer's Guide details on related software for tProbe, refer to this webpage.

*Specifications are subjected to change

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