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Direct Access to T1 E1 DS0 on OC-3/12 STM-1/4
on LightSpeed1000


 

Overview | Main Features | SONET/SDH Data Rates | SDH Mapping
SONET Mappings | Basic Software / Features | Buyer's Guide

Latest LightSpeed1000™ - OC-3 / STM-1 and OC-12 / STM-4 Analysis Software Ver 6.4.26 
is Now Available
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Overview

GL’s LightSpeed1000™ supports Channelized SONET and SDH mapping to T1/E1 framing modes. Main advantage is that any of the T1/E1 or DS0 test requirements can be met without resorting to electrical access.

GL's LightSpeed1000™ hardware platform (PCIe Card and USB Pod) is capable of OC-3/12 and STM-1/4 wire-speed processing on quad optical ports for functions such as wire-speed recording and wire-speed playback of Unchannelized and Channelized ATM, PoS, and RAW Traffic.

Please visit LightSpeed1000™ for more details.

 
pdf User's Guide
pdf USB Unit - Quick Install Guide
pdf PCIe Card - Quick Install Guide
pdf Product Brochure
pdf Quick Start Guide
pdf Installation Guide
Testing Channelized
Optical Carriers Presentation
View Presentation
pdf GL Product Lists
Product Webinar
Product Video
Application Note

Main Features

  • Allows to configure the number of T1 E1 channels to be Multiplexed/Demultiplexed to / from OC-3/12  STM-1/4
  • 2 Channelized OC-3 STM-1/OC-12 STM-4 SONET/SDH interfaces per Lightspeed1000™ card
  • 2 Unchannelized OC-3 STM-1/OC-12 STM-4 interfaces per Lightspeed1000™ card 
  • Allows direct access to anything and everything on SONET / SDH – Framing and Payload, including structured traffic (T1, E1, STS-1, DS3 etc) or unstructured traffic (ATM, PoS, etc).
  • Supports all  "basic applications" and "special applications" for T1 or E1 channels
  • Comprehensive analysis / emulation of voice, data, fax, protocol, analog, and digital signals, including echo and voice quality testing
  • Supports BERT, and Capture and Playback applications
  • Supports Protocol Analysis of structured protocols – HDLC, ISDN, CAS, and more.
  • Direct access to any or all T1s and E1s
    • 336 T1’s x 24 = 16,128 DS0s
    • 252 E1’s x 30 = 15,624 DS0s
  • Scans the received STM-4/STM-1 traffic and identifies the mapping, tributary type [T1/E1], equipped/unequipped status of the tributaries
  • Broadcasts the selected T1/E1 channel data on all the 252 E1’s or 336 T1’s
  • Supports any combination of DS0/64/56/16/8 kbps fractional T1/E1, and N x T1/E1 interface definitions (a total of 252 E1s or 336 T1s – in each port )
  • Supports multiplexing multiple T1 or E1 channels to a single channelized OC-3/12 STM-1/4 line
  • User configurable OC-3/12 STM-1/4 mapping – allows user-defined T1 and E1 channels to multiplex. The channel numbering is same as in demultiplexer
  • User configurable idle code to fill the channels when the user added channels do not have data to multiplex.
  • Unused channels will be treated as unequipped.

Comparison of Channelized OC-3/STM-1 Test Solutions


The above image depicts 2 solutions for testing channelized OC-3/STM-1 lines. The first solution shows an external multiplexer and demultiplexer hardware providing the channelized information to multiple T1 E1 access cards such as GL’s Octal T1 E1 cards for analysis and emulation. This solution would require multiple PCs, T1 E1 access cards, and numerous cables adding to the cost and complexity of the entire solution.

A more simpler solution is provided by GL’s Channelized LightSpeed1000™ board, which supports direct access to all or user-defined 2 x 336 T1s or 2 x 252 E1s per card for analysis and simulation – all within a one pc. With this hardware, any combination of DS0/64 kbps, fractional T-1/E-1, and N x T1/E1 interface definitions can be accessed for performance monitoring.


SONET/SDH Data Rates

  • SONET is the North American standard (termed OC-N) defined in Telcordia GR-253-CORE and ANSI T1.105. STS-1 (Synchronous Transport Signal Level -1) is the basic level of electrically framed signal format in SONET. Higher-level signals are integer multiples of STS-1, creating the family of STS-N signals, for N = 1, 3, 12, 48, 192 & 768.  The optical counterpart for each STS-N signal is designated as OC-N (Optical Carrier level-N).
  • SDH is the Asian and European standard (termed STM-N) defined in ITU G.707 and G.708 standard. An STM-N (Synchronous Transport Module Level-N) are the frame structures used in the SDH.
  • The following table details bit rates of SONET and SDH.
North American Standards ITU-T Designation    

Electrical Level

Optical Level

Data Rate (Mbps)

Payload Rate (Mbps)

SDH Equivalent

T1 Equivalent

LightSpeed1000™

STS-1

OC-1

51.84

48.38

STM-0

28 T1s

???

STS-3

OC-3

155.52

149.76

STM-1

84 T1s

Yes

STS-12

OC-12

622.08

599.04

STM-4

336 T1s

Yes

STS-48

OC-48

2488.32

2396.16

STM-16

1344 T1s

 

STS-192

OC-192

9953.28

9584.64

STM-64

5376 T1s

 

.

.

.

.

.

.

 

.

.

.

.

.

.

 

STS-3072

OC-3072

160Gbit/s

 

STM-1024

86016 T1s

 


SDH Mapping in GL’s LightSpeed1000™

The below diagram depicts various T1/E1 to STM-1 signal mapping possibilities in SDH. The paths colored in green are currently supported on the GL’s LightSpeed1000™ hardware.

Various T1/E1 mappings in SDH:

  • STM-4 --> STM-1 --> AU-3 --> TUG-2 --> TU-12 --> E1
  • STM-4 --> STM-1 --> AU-4 --> TUG-3 --> TUG-2 --> TU-12 --> E1
  • STM-4 --> STM-1 --> AU-3 --> TUG-2 --> TU-11 --> T1
  • STM-4 --> STM-1 --> AU-4 --> TUG-3 --> TUG-2 --> TU-11 --> T1

SONET Mappings in GL’s LightSpeed1000™

The below diagram shows various T1/E1 to OC-3/12 mapping possibilities in SONET. The paths colored in green color are supported on the GL’s LightSpeed1000™ hardware.

The T1 and E1 mappings for OC-3 in SONET are as below:

  • STS-12 --> OC-12 --> STS-3 --> STS-1 --> VT-Group --> VT2 --> E1
  • STS-12 --> OC-12 --> STS-3c --> STS-1 --> VT-Group --> VT2 --> E1
  • STS-12 --> OC-12 --> STS-3 --> STS-1 --> VT-Group --> VT1.5 --> T1
  • STS-12 --> OC-12 --> STS-3c --> STS-1 --> VT-Group --> VT1.5 --> T1

Accompanying Basic Software / Features

Almost all the basic applications and optional applications supported by T1 E1 analyzers are also supported by Channelized LightSpeed1000™. For example, capturing and transmitting an entire raw OC3 / STM1, and OC12 / STM4 RAW signals simultaneously, or performing ISDN, or SS7 analysis, can be performed using the software accompanying the channelized LightSpeed1000™.

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

Some of the applications currently supported are discussed below -

Application #1: Protocol Analysis

The protocol analysis can be performed on the packets captured non-intrusively by connecting the channelized Rx Ports of LightSpeed1000™ to a Fiber Optic tap to as shown below. The LightSpeed1000™ is capable of selectively identifying and forwarding the T1, or E1 signals from OC-3/12  STM-1/4 signal streams to GL’s wide variety of protocol analysis modules such as SS7, ISDN, CAS, and more.




Tapping Optical Lines for Channelized Protocol Analysis

Application #2: Abis Monitoring



Application #3: ATM to SDH in a 3G GSM Network




Buyer's Guide

Item No Item Description
LTS100 Lightspeed1000™ - Dual OC3/12 STM1/4 PCIe Card
LTS108
LTS116
LTS124
LTS132
LTS164
Any 16 Ports Channelized License for OC3 / STM1
Any 32 Ports Channelized License for OC3 / STM1
Any 48 Ports Channelized License for OC3 / STM1
Any 64 Ports Channelized License for OC3 / STM1
All Ports Channelized Licenses for OC3 / STM1 (84x2 for T1, 63x2 for E1)
  Channelized Analysis and Emulation Applications
LTS501
LTS502
Basic Capability to Rx/Tx RAW OC3 / STM1
Basic Capability to Rx/Tx RAW OC12 / STM4
LTS503
LTS504
Record Playback RAW OC3 / STM1
Record Playback RAW OC12 / STM4
  Related Accessories and Cables (LightSpeed1000™)
LTS400
LTS401
LTS402
DDR2 512 MB Memory
DDR2 1 GB Memory
DDR2 2 GB Memory
IPN1310a SFP Transceiver for for OC-3/STM-1 and OC-12/STM-4  Optical, Duplex LC, Single-Mode, 1310nm, IR (Intermediate Range, 15 km)
IPN850a SFP Transceiver for OC-3/STM-1 and OC-12/STM-4 Optical, Duplex LC, Multi-Mode, 850nm, SR (Short Range, 550m)
SA019a
SA019b
SA019c
SA019d
Fiber Optic Cable, Single-Mode, Duplex LC to LC, 2m
Fiber Optic Cable, Single-Mode, Duplex LC to SC, 2m
Fiber Optic Cable, Multi-Mode, Duplex LC to LC, 2m 
Fiber Optic Cable, Multi-Mode, Duplex LC to SC, 2m
SA019st Fiber Optic T-tap, Duplex LC, Single-Mode; includes one SA019a; requires one SA019sc
SA019sc Fiber Optic Analyzer Cable (Special ’Y’ Cable), Single-Mode, Duplex LC to Dual Duplex LC, 3m, Special Analyzer Cable for use with SA019st
SA019mt Fiber Optic T-tap, Duplex LC, Multi-Mode; includes one SA019c; requires one SA019mc
SA019mc Fiber Optic Analyzer Cable (Special ’Y’ Cable), Multi-Mode, Duplex LC to Dual Duplex LC, 3m, Special Analyzer Cable for use with SA019mt
SA019ska

1GB Fiber Optic Single-Mode T-tap Kit with Required Cables and SFP Transceivers

SA019mka

1GB Fiber Optic Multi-Mode T-tap Kit with Required Cables and SFP Transceivers

 
 
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