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T1E1 Quad and Octal Analysis & Emulation Hardware
          Octal/Quad T1 E1 PCI Board

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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.

Octal/Quad T1 E1 PCI Board on Rack PC


Increased Performance with 64-bit Support

GL’s T1/E1 analyzers supports both 32-bit and 64-bit applications. 64-bit support improves the performance of Protocol Analysers viz., ISDN, ISUP, GSM and allow users to monitor Hundreds to Thousands of Signalling Links simultaneously and continuously. Also, provides improved processing and response time for Statistics, Call Data Records, Search and other such functions.

Enhanced CCA application allows better processing and response time for multiple instances of CCA applications for long run tests. Similarly, all basic Intrusive and Non Intrusive applications such as BERT, Monitoring Applications, Oscilloscope, Spectral Display etc provide better processing and response time for multiple instances of monitoring and simulations windows.

MAPS™ Protocol Emulators are enhanced to provide improved performance for load generation and simulation of Protocols on 16 T1/E1 ports simultaneously.

Client Server commands support Thousands of Tasks simultaneously with number of successful thread creation. This helps to run Tx Rx File, Tx and Rx Tone and Tx Rx Digits on 24/31 Timeslots * 8 Ports * n (where n is the number of Octal T1 E1 Cards)

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
  • Physical layer analysis includes ability to send alarms and errors via SNMP Traps
  • All protocol analyzers now include frame length in protocol statistics selection choice for data link layer
  • VoIP, Frame Relay, Multilink Frame Relay, PPP and Multilink PPP, HDLC
  • Most all “basic applications” and “special applications” are available for Quad and Octal T1 E1 cards
  • 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
  • Windows and Linux Drivers for Open Source Applications
  • Media (VoIP) Gateway, IP PBX, and IVR Applications i.e. Asterisk (TM)
  • Routing and Bridging emulation over Multi T1/E1 WAN interfaces using MLPPP (Multi Link PPP) and MFR (Multi Link Frame relay) protocols
  • Supports “Cross-Port Through” and “Cross-Port Transmit” Modes – these configurations make cabling with Drop/Insert and Fail-Safe Inline Monitoring very easy
  • High Density and High Speed – The boards (with Direct Memory Access) are significantly faster and significantly more efficient
  • Octal boards are compatible with dual, quad, and higher core motherboards and software that simulate dual and quad cores (hyper-threading)
  •  Supports both 32-bit and 64-bit Windows® operating system.

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

Comparison and advantages of the new Quad and Octal Cards over Dual T1 E1 Universal Cards are given in the following table.

Feature Universal Dual T1 E1 Boards Quad, Octal T1 E1 Boards
Number of Ports 2 4, 8
PCI Slot Type Uses a PCI Bus / Connector Uses a PCI Express x1 Bus / Connector
Output Frequency Offset Each port can be individually set with an output frequency offset A single frequency offset which is applied to all 8 ports
Pulse Mask Application Supported Not Supported
Jitter Measurement Supported Not Supported
External Clock Mode Supported No clock port connector
VF and Drop and Insert Supported No VF connectors; Digital Drop/Insert supported
Speaker (on board) Supported No speakers
DSX level 20 dB, 26 dB 26 dB +/- 2.5dB



Physical Interface  

T1/E1 Signal

RJ48c Connectors Four (4) or Eight (8) per board

PC Interface

PCI Express X1 Lane
Compliant to PCI Express Base Specification v1.1

T1/E1 Line Interface  

Line Code format

AMI, B8ZS (T1) or HDB3 (E1)

Framing Formats

Unframed, D4 (T1), ESF (T1), ESF (J1), CAS (E1), FAS (E1), CRC4

BERT Pattern Generation

Pseudorandom patterns: (63) 2ˆ6-1, (511) 2ˆ9-1, (2047) 2ˆ11-1, (32767) 2ˆ15-1, (1048575) 2ˆ20-1, (8388607) 2ˆ23-1, QRSS. T1 In-Band Loop Code Generation and Detection, Fixed patterns: All Ones, All Zeros, 1:1, 1:7, 3 in 24. Hardware Compliant: User pattern of up to 32 bits in length International, National & Extra Bits: User Defined (E1)

Display and Logging

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.

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.

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.


Normal (Outward and Inward)
Cross-Port Transmit Loopback
Cross-Port Through Loopback


T1/E1 Interface

Hardware Compliant:
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 Specification
ETSI: ETS 300 011, ETS 300 166, ETS 300 233, CTR12, CRT4
Japanese: JTG.703, JTI.431, (Future enhancement - JJ-20.11 - CMI Coding Only)

T1 Output Level

T1: 3.0V Base to Peak Selectable 0-655Ft Pulse Equalization Setting

E1 Output Level

E1: 3.0V ±0.3V Base to Peak

Line Build-Out Selections

0dB, -7.5dB, -15dB, -22.5dB for T1 only

Tx Capability

DSX-1 Outputs (to 655 feet)

Alarm Insertion

Blue, Yellow, Remote, Distant Multiframe, Bit 7 Zero Suppression
D4 Yellow: 1 in S bit of frame 12
Carrier Loss

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.

Internal Clock Specification

Standard: ± 3ppm
Optional: ± 1ppm

Output Clock Source / Synchronization Options

Internal, Recovered

Frequency offset

OctalE1: +\- 615 Hz
OctalT1: +\- 464 Hz


Input Impedance

100 ohms for Terminate and monitor (T1)
120 ohms for Terminate and monitor (E1)
>1K ohms for Bridge


Terminate, Monitor, Bridge

T1 Input Frequency

1.544 MHz ± 20 Khz

E1 Input Frequency

2.048 Mhz ± 20 KHz

Frequency Measurement

± 1ppm

Error Detection

Frame Error, CRC Error, CAS Mulitframe Error, BPV Error, Logic Error, Frame Alignment Error

  • 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

  • Path Code Violation

Alarm Detection

D4 Yellow Alarm, ESF Yellow Alarm
 Hardware Compliant: J1 Yellow Alarm

Input Range


  • 0 to 36 dB (Long haul)

  • Monitor

  • Bridge


  • 26 dB +/- 2.5dB


  • 0 to 43 dB (Long haul)

  • Monitor

  • Bridge


  • 26 dB +/- 2.5dB

Intrinsic Jitter

Jitter Tolerance: Meets AT&T TR 62411 (Dec. 90)and Meets ITU-T G.823
Jitter Transfer: Meets AT&T TR 62411 (Dec. 90)

PCM Interface  


Synthesized Tone: 15 Hz to 3975 Hz selectable in 1Hz steps, +3.0 dBm to -40 dBm 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, ISDN, MFC-R2

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, and 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/J1 Timeslots to hard disk file.


Propagation Delay Simulation

Up to 2 Seconds

Precision Delay Measurement

Up to 8 Seconds

Physical Dimensions  

Main Board

7.7 inches x 4.4 inches
PCIe X1 Connector Interface to PC

Daughter Board

3.8 inches x 4.2 inches
Without PC Interface

Hardware Requirement

Available with user-friendly GUI for Windows® 7 / 8 operating systems with support for almost all existing T1 E1 Analyzer applications including Comprehensive Analysis / Emulation of Voice, Data, Protocol, Analog, Digital, and Echo Testing.

* Specifications subject to change without notice.


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.


Basic Applications
Optional Applications
Buyers Guide
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