BZU PAGES: Find Presentations, Reports, Student's Assignments and Daily Discussion; Bahauddin Zakariya University Multan Right Header

HOME BZU Mail Box Online Games Radio and TV Cricket All Albums
Go Back   BZU PAGES: Find Presentations, Reports, Student's Assignments and Daily Discussion; Bahauddin Zakariya University Multan > Institute of Computing > Bachelor of Science in Telecom System > BsTS 4th Semester > Digital Telephony


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Old 18-03-2011, 05:38 PM
bonfire's Avatar
M.Arsalan Qureshi

 
Join Date: Oct 2008
Location: Garden Town, Multan Cantt
Posts: 616
Program / Discipline: BSTS
Class Roll Number: 09-31
bonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond reputebonfire has a reputation beyond repute
Default VoIP, Network Congestion, and the Importance of QoS Techniques

VoIP, Network Congestion, and the Importance of QoS Techniques

Network congestion is an issue that can lead to a variety of problems on any data network; when the data network is also supporting voice traffic, these issues are even more serious. For example, WAN interfaces on a router may already be at or very near to capacity, leading to queuing issues that may result in packets being delayed, or even dropped as queues fill up. While this might not be a huge issue for non-interactive and reliable traffic like an FTP transfer, it presents a much greater problem when the network needs to support highly interactive traffic like packet-switched voice. If the level of congestion is high enough, users may not be able to complete their calls, have existing calls dropped, or may experience a variety of delays that make it difficult to participate in a “smooth” conversation.


In order to properly design a network to support voice traffic, WAN links need to be provisioned correctly, and QoS mechanisms need to be implemented in order to ensure that voice traffic is prioritized. When provisioning a WAN link to support multiple services (including voice), the available bandwidth of the link should be provisioned such that total data traffic accounts for a maximum of 75% of the necessary bandwidth, while the remaining 25% isavailable for additional needs, such as routing protocol requirements.



When provisioning or planning a WAN link that will support voice traffic, keep in mind that the codec used will have the biggest influence on the amount of bandwidth used. Multiplying the bandwidth figure associated with a codec by the number of simultaneous phone conversations that need to be supported provides a good indication of how much bandwidth will need to be dedicated to voice traffic only across WAN links. Of course data traffic will also need to be considered, but this will vary in different network environments.
__________________

Reply With Quote
Reply

Tags
congestion, importance, network, qos, techniques, voip


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
11 importance for pakistan viky Daily News And halat-e-hazra 0 28-03-2011 12:54 PM
Congestion Control and Quality of Service bonfire Data Communication 0 18-03-2011 06:39 PM
The Importance of Network Quality When Transporting VoIP Traffic bonfire Digital Telephony 0 18-03-2011 05:40 PM
Importance of friday viky Islam 0 11-02-2011 10:40 AM
Importance of Friends irfishahpk Quotes 12 23-06-2009 12:34 PM

Best view in Firefox
Almuslimeen.info | BZU Multan | Dedicated server hosting
Note: All trademarks and copyrights held by respective owners. We will take action against any copyright violation if it is proved to us.

All times are GMT +5. The time now is 08:13 PM.
Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.