?
Solved

SIP and VPN`

Posted on 2012-03-12
2
Medium Priority
?
303 Views
Last Modified: 2012-08-13
Hi

We have just recently opened up a new office in Spain and one of the services we have made available to them is VOIP via are SIP trunks here in London.

The requirements of this set-up is that the voice has to come though London to are controller and then out to the Internet. We have got this working great but the connection between the phones in Spain and are controller is intermittent and the phones keep loosing service which is very annoying.

We have managed to get the latency down over the vpn from 350ms to 137ms. The VPN is always up and we don't lose any pings but it keeps saying on the controller that its occasionally  missing heartbeats between the phones and controller. I have prioritized the traffic on both sides. We have got good bandwidth on either side of the link.

Any ideas as to what could be happening here or how I might improve the situation? Are system is Mitel if that helps.
0
Comment
Question by:Leedham2answers
2 Comments
 
LVL 19

Accepted Solution

by:
Miguel Angel Perez Muñoz earned 2000 total points
ID: 37709312
Have you calculated jitter on this vpn?. This link may help you: http://www.voip-info.org/wiki/view/VPN+Test+Tool
0
 

Author Comment

by:Leedham2answers
ID: 37710559
Hi

I'm actually using PRTG to monitor the uptime and jitter at the moment. Over the last 2 hours it has been up 100% and the jitter on average is between 5 and 10 with a couple of small spikes of about 20ish. I read online that if it is around 10 its good for IP phones.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

There’s a movement in Information Technology (IT), and while it’s hard to define, it is gaining momentum. Some call it “stream-lined IT;” others call it “thin-model IT.”
Why do some people recommend buying business VoIP from an ISP? What are the benefits to my company? What are the costs?
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…
Suggested Courses
Course of the Month4 days, 16 hours left to enroll

601 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