Solved

Need Best QoS for VPN VoIP Solution in Router / Firewall Combination

Posted on 2004-09-08
6
1,813 Views
Last Modified: 2008-01-09
After speaking to many people and trying some different solutions, there seems to be differing opinion on the best answer to my question.

I am looking for the best router / firewall combination which provides a reliable, secure site-to-site VPN over DSL and supports QoS features for the VPN traffic carrying VoIP packets.

Specific Situation:

4 Sites - Max 8 Users at each site
SDSL 512k Up / 512k Down at each site (except main site - ADSL 768k Up / 1536k Down)
Altigen VoIP Phone System (Main server at main site, rest of sites just have phone sets - no gateways)
VoIP Codec - G723.1 (6.4k bandwidth)
Mostly VoIP, Windows domain traffic and file traffic over WAN
Currently am using Cisco 837's for Site-To-Site VPN for WAN

I would appreciate any significant suggestions on this subject as I am racking my brain to provide VoIP phone service which doesn't have delays or voice quality issues.  Please help!

0
Comment
Question by:zhoffman
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 2

Assisted Solution

by:apostle12
apostle12 earned 250 total points
ID: 12029127
Get a Netscreen Firewall. They are relatively inexpensive and you have total control over the traffic shaping. I used it when I had video conferencing going on, it had priority and everything else took a back seat, VoIP, internet browsing etc. When the video conferencing was done everything went back to normal. You can pick the 5 user model up on ebay for about $200.00
0
 
LVL 2

Expert Comment

by:apostle12
ID: 12029135
I also used the Altigen System.
0
 
LVL 2

Accepted Solution

by:
tabush earned 250 total points
ID: 12038318
If routing traffic over the internet you can't get any guaranteed QoS as the internet is not controlled by one single entity. But for best results, you should:
1. Get all SDSL lines (more reliable and generally lower latency than ADSL)
2. Get all DSL lines from the same carrier (so you will have minimal hops from one office to the next)
3. Set up QoS on the Firewalls which will help manage traffic.
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:zhoffman
ID: 12038733
Are there any specific firewalls you would recommend for providing QoS?  I haven't seen many which provide this service.  It appears that the QoS function is usually on the router side.

Please let me know your suggestions.  Thanks.
0
 
LVL 2

Expert Comment

by:apostle12
ID: 12130011
Netscreen. QoS and traffic shaping.
0
 

Expert Comment

by:topherguy
ID: 12363579
I second the Netscreen solution, a proven VOIP performer in all our VOIP installations.  Sonicwall is great as well, not sure that the SOnic has traffic shaping.  That's whats great about the netscreen.  A TFP session won't take out a voice call ojn VOIP.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my office we had 10 Cisco 7940G IP phones that were useless as they were showing PROTOCOL APPLICATION INVALID when started. I searched through Google and worked for a week continuously on those phones, and finally got them working. This is a di…
Why do some people recommend buying business VoIP from an ISP? What are the benefits to my company? What are the costs?
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

632 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question