en

COVID-19: As a designated essential telecom solutions provider, EXFO remains fully operational with our employees' health and safety as our top priority.

  • EN

Products

Field network testing

FIP-500 - fiber inspection scope

Lab and manufacturing testing

LTB-12 - rackmount modular mainframe

Service assurance platform

Solutions

Service assurance solutions

Communications service providers

Contractors

Academic and research institutions

Cable MSO (multiple system operator)

Network equipment manufacturers

Webscale companies and data centers

Government

System integrators

Technologies

Services

Training

Featured Introduction to testing with OTDRs

Field network testing

Brochures and catalogs Be-an-Expert Training Catalog

Lab and manufacturing testing

Brochures and catalogs Be-an-Expert Training Catalog

Service assurance

Brochures and catalogs EXFO Astellia Training Courses

Resources

Technical documentation

Promotional documentation

Legal documentation

Blog

Mastering the Mueller method with swept IL-PDL measurements By Mathieu Bergont | May 2021
5G challenges from R&D to field deployment (TEST Talk 4 – May 6) By Leo Lin | May 2021
Rural Broadband Services Delivery – PON Topologies By Maury Wood | May 2021
View all

Webinars

Register now

En busca de la mejor estrategia de evaluación de enlaces ópticos para centros de datos

Jesus Resendiz

May 19, 2021

Register now

Fiber monitoring – the missing piece in the broadband and 5G networks monitoring puzzle

John Rich

Service assurance
May 19, 2021

Register now

FTTH New Trends & Technologies, R&M and EXFO are ready for the future

Alfonso Domesi

June 1, 2021
View all

Glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9

Videos

Success stories

Alternate Text

European operator uses Nova Context to improve trouble-ticket management

Alternate Text

WINDTRE differentiates on ‘top quality’ customer experience with Nova service assurance

Alternate Text

CenturyLink Lumen differentiates enterprise network services on ‘quality’ with Nova Active

View all

Transformations

  • EN
Corporate
Investors
Careers
Partners
Suppliers
Products
Field network testing
Lab and manufacturing testing
Service assurance platform
Solutions
Service assurance solutions
Communications service providers
Wireline
Wireless
Service assurance
Contractors
Managed services, installation and maintenance
Academic and research institutions
Cable MSO (multiple system operator)
Wireline
Service assurance
Network equipment manufacturers
Webscale companies and data centers
Government
System integrators
Technologies
Support
Services
Training
Field network testing
Lab and manufacturing testing
Service assurance
How to buy
Resources
Technical documentation
Promotional documentation
Legal documentation
Videos
Transformations
Contact

Glossary

Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business.

Carrier-Sense Multiple-Access with Collision Avoidance (CSMA/CA)

Return to glossary

Used to improve the performance of CSMA by attempting to be less "greedy" on the channel. If the channel is sensed busy before transmission then the transmission is deferred for a "random" interval. This reduces the probability of collisions on the channel.

Let's stay in touch!

Get the latest network test, monitoring and analytics news!

Thank you.