This document summarizes techniques for optimizing satellite capacity and reducing the total cost of satellite communications. It discusses how adaptive coding and modulation (ACM), low density parity check codes (LDPC), and carrier-in-carrier (CnC) bandwidth compression can increase throughput and efficiency. VersaFEC is highlighted as a short-block LDPC code that provides coding gain with low latency. The document also provides examples of how these technologies can reduce operating expenses and capital expenses for satellite networks.
Introducing the Cambium Networks PMP 450 from WAVWAV Inc.
Introducing the Cambium Network's PMP 450 solution from WAV. The PMP 450 simultaneously talks to both FSK & OFDM SMs using Canopy MAC protocol, allowing more users and/or higher rate plans.
Go to www.wavonline.com to learn more!
For all of your Wireless needs... WAV's Got You Covered
Satellite IP Trunking networks provide local networks with access to the internet (or any other type of network) from a remote access point to the backbone. Providing IP Trunking and Backbone services to ISPs and Telecom operators requires constant scrutinizing of the operational expenses due to a highly competitive market with razor- thin margins.
Introducing the Cambium Networks PMP 450 from WAVWAV Inc.
Introducing the Cambium Network's PMP 450 solution from WAV. The PMP 450 simultaneously talks to both FSK & OFDM SMs using Canopy MAC protocol, allowing more users and/or higher rate plans.
Go to www.wavonline.com to learn more!
For all of your Wireless needs... WAV's Got You Covered
Satellite IP Trunking networks provide local networks with access to the internet (or any other type of network) from a remote access point to the backbone. Providing IP Trunking and Backbone services to ISPs and Telecom operators requires constant scrutinizing of the operational expenses due to a highly competitive market with razor- thin margins.
Why Direct Transmission of 5G Radio over Optical Fiber?Bob Walter
An argument for replacing CPRI in mobile wireless fronthaul links with high performance analog optical transceivers that directly transmit high order modulation, spread spectrum OFDM radio signals over optical fiber and meet 3GPP E-UTRA specs. Replacing CPRI with an RF over Fiber link enables the consolidation of the radio and the virtualization of the remote radio head (RRH) within the baseband unit (BBU). In turn, this can reduce the network complexity, power consumption, CAPEX and OPEX while increasing bandwidth and improving bandwidth efficiency. If BBU processing time could be reduced to less than 2.3 ms, fronthaul reach could be extended up to 70 km.
An SDN Based Approach To Measuring And Optimizing ABR Video Quality Of Experi...Cisco Service Provider
Reprinted with permission of NCTA, from the 2014 Cable Connection Spring Technical Forum Conference Proceedings. For more information on Cisco video solutions, visit: http://www.cisco.com/c/en/us/products/video/index.html
Why Direct Transmission of 5G Radio over Optical Fiber?Bob Walter
An argument for replacing CPRI in mobile wireless fronthaul links with high performance analog optical transceivers that directly transmit high order modulation, spread spectrum OFDM radio signals over optical fiber and meet 3GPP E-UTRA specs. Replacing CPRI with an RF over Fiber link enables the consolidation of the radio and the virtualization of the remote radio head (RRH) within the baseband unit (BBU). In turn, this can reduce the network complexity, power consumption, CAPEX and OPEX while increasing bandwidth and improving bandwidth efficiency. If BBU processing time could be reduced to less than 2.3 ms, fronthaul reach could be extended up to 70 km.
An SDN Based Approach To Measuring And Optimizing ABR Video Quality Of Experi...Cisco Service Provider
Reprinted with permission of NCTA, from the 2014 Cable Connection Spring Technical Forum Conference Proceedings. For more information on Cisco video solutions, visit: http://www.cisco.com/c/en/us/products/video/index.html
Kyeong Soo Kim, Academic Weeks Videoconference Session with Pakistan COMSATS Institute of Information Technology (CIIT), Swansea University, Swansea, Wales UK, Dec. 14, 2010.
Spectrum management best practices in a Gigabit wireless worldCisco Canada
With the introduction of 802.11ac the news is full of the potential for Gigabit networking. Very few of us will have the luxury of running a network that strictly supports 802.11ac and that means a mixed environment for most of us. Get the facts on what 802.11ac means to you, how to evaluate using 20, 40, 80 or 160 Mhz OBSS/Channels. How does RRM's DCA handle a mixed environment and what performance considerations do you need to consider to make decisions that make the best of the spectrum you have today and in the future. What is in the future for our spectrum? To learn more please visit our website here: http://www.cisco.com/ca/
Stephan Rettenberger’s presentation at NGON & DCI World explained how coherent technologies can help to create a future-proof network and examined the role that direct detect optics play at the edge.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
2. SatCom Economics – “Total Cost
of Ownership”
• Costs typically associated with satellite
communications
– Operating expenses
Satellite space segment
Recurring license fees and taxes
Support and maintenance
– Capital (Fixed) expenses
Ground equipment, codec, routers, switching
equipment, modems, converters, RF, HPA, antennas
Site preparation, civil works, one time license fees
• What does a SatCom user want?
– Reduce Operating Expenses (OPEX)
Reduce occupied bandwidth
Reduce transponder power
– Reduce Capital Expenses (CAPEX)
Reduce BUC/HPA size
Reduce antenna size
– Increase availability (margin)
– Increase throughput
2
Operating
Expenses
Capital
Expenses
Network Operations + Depreciation
Total Cost of Ownership
Operations &
Maintenance
Transmission
OPEX
Power
Spares/Support
Training
Site
Rental
Network
Equipment
Site
Equipment
Civil
Works
NRO
Transmission
Equipment
3. Traditional SatCom Optimization
• Traditionally, you could reduce bandwidth or power,
but not both without significantly increasing the
CAPEX
– Reduce occupied bandwidth
Use higher order modulation
– Increases transponder power utilization
– Increases BUC/HPA size and/or antenna size
– Reduce transponder power utilization
Use lower order modulation
– Increases occupied bandwidth
– Reduces BUC/HPA size and/or antenna size
Without using lower order modulation
– Increase antenna size
3
4. Revolutionary Forward Error
Correction & Modulation
Low-Density Parity-Check Codes (LDPC)
• At lower code rates (≤ Rate 3/4 ) gives
better performance than Turbo Product
Coding
• Can acquire and track at much lower
values and Eb/No
5
5. 6
Modulation and Coding – DVB-S2
– Goals
Increase throughput over same transponders
Advanced capabilities for one-way and interactive
applications
– Results:
30% more throughput for same transponder EIRP and BW
with constant modulation and coding
Change modulation and coding on the fly for advanced
applications and services
– Modulation and Coding Implementation
QPSK, 8-PSK, 16-APSK and 32-APSK modulation
Code rates 1/4 to 9/10 using LDPC + BCH error correction
– LDPC = Low Density Parity Codes
– BCH = Bose-Chasudhri-Hocquenghem
C/N (ideal) from -2.4 (QPSK 1/4) to 16 dB (32-APSK 9/10)
6
6. VersaFEC®
• VersaFEC is a patented (Covered by US Patents
7,353,444 and 7,415,659. System of short-block,
low latency Low Density Parity Check (LDPC)
codes designed to support latency-sensitive
applications, such as cellular backhaul over
satellite.
– VersaFEC was developed by Comtech AHA in
collaboration with Comtech EF Data
• Requires optional expansion card
– Can be field installed by a qualified technician
VersaFEC is a Trademark of Comtech AHA
7
7. Why VersaFEC ?
• For block codes such as Turbo Products Codes
(TPC) or Low Density Parity Check Codes (LDPC)
the coding gain improves with increased block
size, however increasing the block size leads to
increase in latency.
• So, the 1.0 dB improvement in Eb/No came at the
expen ses of almost 5 fold increase in latency.
• VersaFEC is designed to provide high coding gain
with much lower latency so latency sensitive
applications can take advantage of the improved
gain.
8
8. VersaFEC Modulation & Code Rates
• VersaFEC supports 12 different modulation and code
rates for ACM and CCM
9
9. Is FEC Latency Fixed ?
• For block codes such as TPC, LDPC, VersaFEC,
DVB-S2, latency is inversely proportional to the data
rate, if the data rate doubles, the latency is reduced by
50%.
• This is why a low latency FEC is critical for lower data
rate links.
10
10. Low Latency
• VersaFEC was specifically designed to support low
latency applications while providing superior coding gain
– e.g. Consider a 256 kbps link using 8-QAM, Rate 3/4, needing a
BER of 5.0E-8
In this case, VersaFEC’s Eb/No performance is as good as LDPC
with 76% lower latency and 4% improvement in spectral efficiency
Given the excellent Eb/No performance of VersaFEC, it is
recommended for all supported data rates
11
11. Adaptive Coding & Modulation
• Satellite users have traditionally relied on worst case link
margin to overcome rain fade and other dynamic
impairments which leads to significant inefficiencies
• A Constant Coding and Modulation (CCM) link is generally
over provisioned by many dBs of margin throughout the
year, just to get through a few hours of excessive
degradation.
• CCM Link – Modulation and FEC Rate are set manually
and remain unchanged until changed by the.
16
12. Adaptive Coding & Modulation
• Adaptive Coding and Modulation (ACM) is a technique
that allows for automatic change in Modulation and FEC
Code Rate in response to changing link conditions.
• Adaptive Coding & Modulation (ACM) converts the fade
margin into increased capacity – average throughput
gain of 100% (or more) is possible, compared to
traditional CCM
– This is accomplished by automatically adapting the modulation type
and FEC code rate to give highest possible throughput.
• ACM maximizes throughput under all conditions – rain
fade, inclined orbit satellite operation, antenna
mispointing, noise, interference and other impairments.
17
14. DoubleTalk® Carrier-in-Carrier®
• Based on patented “Adaptive Cancellation”, Carrier-in-
Carrier (CnC) allows carriers in a Duplex satellite link
to occupy the same transponder space
Without DoubleTalk Carrier-in-Carrier With DoubleTalk Carrier-in-Carrier
Carrier-in-Carrier is a Registered Trademark of Comtech EF Data
DoubleTalk is a Registered Trademark of Applied Signal Technology, Inc.
19
16. Multi Dimensional Optimization
• DoubleTalk Carrier-in-Carrier is a bandwidth compression
solution based on patented “Adaptive Cancellation” technique
that allows satellite carriers to share spectrum
• DoubleTalk Carrier-in-Carrier combined with proper Modulation
and FEC, makes it possible to optimize satellite communications
like never before
– Reduce OPEX
Occupied Bandwidth & Transponder Power
– Reduce CAPEX
BUC/HPA Size and/or Antenna Size
– Increase throughput
– Increase link availability
– Or a combination to meet different objectives
21
17. Carrier-in-Carrier
• CDM-625 has the most advanced Carrier-in-Carrier
implementation
• Significant Performance Enhancements
– Improved Eb/No Performance
– Ability to handle higher asymmetry
– Improved Doppler performance
– Additional optimization options when combined with LDPC/TPC
and VersaFEC
• Power ratio based on Power Spectral Density and not
absolute power
– PSD Ratio Spec (Interferer to Desired): -7 dB to +11 dB
22
19. Upgrading Asymmetric Antenna Link
(Using CDM-625)
• IS-1002, C-Band (SEZ)
• Earth Station
– 9.0 m to 2.4 m (Africa)
• Option 1 - Using different Modulation and FEC rate to
keep PSD Ratio within specification
• Power Spectral Density Ratio ~ ±5.5 dB (well within spec)
24
20. Upgrading Asymmetric Antenna Link
(Using CDM-625)
• Option 2 – Using same FEC and Modulation in each
direction, but increasing Transmit EIRP of the smaller
Antenna (if possible) to achieve similar PSD Ratio
• Increasing Remote’s TX EIRP by 1 dB, allows similar Power
Spectral Density Ratio as previous example
25
21. Upgrading Asymmetric Data Rate Link
(Using CDM-625)
• IS-905, C-Band (Global Beam)
• Earth Station
– 9.5 m to 3.8 m (Middle East/Africa)
26
22. CDM-625 Advanced Satellite Modem
• CDM-625 Advanced Satellite Modem builds on Comtech
EF Data’s legacy of providing the most bandwidth efficient
satellite modems
– First modem to support DoubleTalk® Carrier-in-Carrier® with LDPC
and VersaFECTM (short block LDPC) FEC
Provides significant OPEX and CAPEX savings compared to any other
modem
27
23. Carrier-in-Carrier + VersaFEC/ACM
• The CDM 625 Modem is the Most
Spectral Efficient satellite modem on
the market today
– VersaFEC/ACM can deliver more then
100% traffic throughput increase
– Carrier-in-Carrier can reduce satellite
Power and/or Bandwidth resources by 50%
28
25. CDM-625 Value Proposition
• Combination of DoubleTalk Carrier-in-Carrier and
LDPC
– Additional reduction in Transponder Power
– Additional increase in Margin (availability)
– Further reduction in BUC/HPA and/or Antenna
• CDM-625 can handle higher asymmetry
– No restriction on symbol rate of the 2 carriers
– Power Spectral Density Ratio limit as opposed to Total
Power Ratio
26.
27.
28.
29.
30. Recent Customer
Savings Examples
• New Network in South Asia
– 175 MHz (Traditional) vs. 125 MHz (CnC)
Annual Savings ~ $600,000 (@ $1,000 / MHz / Month)
• Existing Network in Africa
– 40% potential saving on 1st transponder (36 MHz)
Annual Savings ~ $520,000 (@ $3,000 / MHz / Month)
– 44% potential saving on 2nd transponder (54 MHz)
Annual Savings ~ $800,000 (@ $2,800 / MHz / Month)
• Existing Network in Latin America
– 38% potential saving on 1st transponder (41 MHz)
Annual Savings ~ $486,000 (@ $2,600 / MHz / Month)
35
32. CDM-570/L-IP
• Enables bandwidth efficient IP connectivity over satellite
– Managed Switch capability for simplified set up
– Static IP routing for unicast and multicast
– Options for improving bandwidth efficiency
Header Compression
Payload Compression
– Quality of Service (QoS) Option
DiffServ
Max/Priority
Min/max
– 3xDES data encryption option
– Manageable via CLI, SNMP, web interface or telnet
• Optional integration with Vipersat Management System (VMS)
33. VLAN Support
(CDM-570/L-IP)
• Native and Tagged Mode
• Ingress/Egress processing based on user
configuration
– Up to 32 VLANs can be specified
• VLAN QoS
– Priority based with option to limit maximum
34. Header & Payload Compression
(CDM-570/L-IP)
• Header Compression
– Reduces the Layer 2/3/4 header to
a few bytes
E.g., in case of Voice over IP
(VoIP) bandwidth required can be
reduced by as much as 60%
– Configurable on a per route basis
– Ethernet headers are compressed
in easyConnect Mode
• Payload Compression
– Can reduce payload size by 40%
or more
– Configurable on a per route basis
Supported Ethernet Headers (Header Comp.)
Ethernet 2.0
Ethernet 2.0 + VLAN-tag
Ethernet 2.0 + MPLS
802.3-raw
802.3-raw + VLAN-tag
802.3 + 802.2
802.3 + 802.2 + VLAN-tag
802.3 + 802.2 + SNAP
802.3 + 802.2 + SNAP + VLAN-tag
802.3 + 802.2 + SNAP + MPLS
Supported Layer 3&4 Headers (Header Comp.)
IP
TCP
UDP
RTP (Codec Independent)
35. Quality of Service (QoS)
(CDM-570/L-IP)
• Minimizes jitter and latency for real time traffic
• Provides priority treatment to mission critical applications
• Allows non-critical traffic to use the remaining bandwidth
• Modes
– DiffServ
Allows Differentiated Services in accordance with Industry standards
– Max/Priority
Assign maximum bandwidth that any traffic flow can utilize
Establish up to 8 levels of prioritization
– Min/Max
Set the minimum and maximum bandwidth for user-defined classes of
traffic
Ensures that a certain level of bandwidth is always applied
36. WAN Adaptation
• WAN adaptation capability reduces the satellite
bandwidth required to carry an E1 bearer when used
for cellular backhaul
• Cellular protocols were originally designed to use
entire E1 bearer(s) irrespective of actual traffic
• WAN Adaptation reduces the bits that need to be
transmitted, significantly reducing the transmission
bandwidth
– Possible savings of 30% or more depending on traffic profile
42
37. Modem Configuration
• WAN Adaptation feature allows users to control
savings and link quality
• Terrestrial Input
– E1 Balanced/Unbalanced
– Select up to 16 Time Slots carrying traffic
• WAN (Satellite) Output
– Configure Modem Tx Data Rate
The Modem Tx Data Rate can be as low as 0.5 x N x 64 kbps,
where N is the number of selected traffic Time Slots
E.g. if user selects 8 Time Slots as input, the Tx Data Rate can
be selected from 256 kbps (50%) to 512 kbps (100%)
43
38. Adaptation Ratio & Savings
• Adaptation Ratio is the ratio of the Modem Tx Data
Rate and the Data Rate of the selected Time Slots
– E.g. if 10 Time Slots are selected and Modem Tx Data Rate
is set to 448 kbps
Adaptation Ratio = 448/ (10 x 64) = 0.7
• % BW Savings = (1 – Adaptation Ratio) x 100
– E.g., in previous case,
Savings = (1 – 0.7) x 100 = 30%
44
42. Availability & Ordering
• WAN Adaptation is available on E1/T1 capable
CDM-570/L and CDM-570/L-IP
• Plug-in hardware module
– Can be installed in existing modems (that are E1/T1
capable) by a qualified technician
Also requires firmware upgrade to 1.7.0 (or later)
– Uses the Reed Solomon slot in the modem
i.e. Reed Solomon cannot be ordered/used with WAN Adaptation
• No software options/FAST required
49