Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

SIP and VPN`

Posted on 2012-03-12
2
Medium Priority
?
300 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
[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
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

Veeam Disaster Recovery in Microsoft Azure

Veeam PN for Microsoft Azure is a FREE solution designed to simplify and automate the setup of a DR site in Microsoft Azure using lightweight software-defined networking. It reduces the complexity of VPN deployments and is designed for businesses of ALL sizes.

Question has a verified solution.

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

WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
On Feb. 28, Amazon’s Simple Storage Service (S3) went down after an employee issued the wrong command during a debugging exercise. Among those affected were big names like Netflix, Spotify and Expedia.
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 …
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

722 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