Solved

Delay hearing incoming caller

Posted on 2014-12-30
5
123 Views
Last Modified: 2015-02-20
We have several sites all recently moved to a hosted broadworks PBX solution provided by Hostcomm.

All sites use netgear POE switches and Yealink T26P handsets, with Draytek 2830 routers.
We experience a delay when incoming callers ring in, the operator answers and cannot hear the caller speak for approximately 10 seconds.
Sometimes it works sometimes it doesnt, approx 50% of the time the call is fine.

We have spoken with Hostcomm who have told us it is a local issue, perhaps bandwidth, but the sites are on fibre and speedtests show there is plenty of available bandwidth, Draytek have talked us through enabling / disabling SIP ALG on the router (no difference),  extending the UDP portmap time with the command portmaptime -u 86400, updating the firmware  and adding STUN servers - again no difference.

Any help would be greatfully accepted - this is a serious issue.
0
Comment
Question by:benchets
  • 3
  • 2
5 Comments
 
LVL 23

Expert Comment

by:Mohammed Hamada
ID: 40524906
Do you have any IDS/IPS in the routers or firewalls ? you may want to disable those to just check if it will make any difference!

What's the latency delay between you and the PBX solution provider? that might be the reason why you're having issues between them even if your internet connection is super fast the latency would highly affect your VoIP calls.
0
 

Author Comment

by:benchets
ID: 40525104
Thanks for the respone - there is no IDS/IPS enabled on the router.

How can I test the latency between my site and the PBX host?
0
 
LVL 23

Expert Comment

by:Mohammed Hamada
ID: 40525267
Normally the host company should have a place where you can test your connectivity, quality...etc with them like this company Intermedia
http://www.intermedia.net/products/hosted-pbx/voip-bandwidth-test

But you can also do a simple ping to the PBX host would show you the latency like in the following link
http://www.wikihow.com/Test-Network-and-Internet-Latency-(Lag)-in-Microsoft-Windows

But I would recommend that you the ping and also use the following site to test not just latency but any other thing that might be affecting your connectivity, try to use the following link and choose the closest ISP location to your Host company

http://www.pingtest.net/

If the latency is higher than 60ms then that would cause issues like delay in call or even cause call quality issues.
0
 

Accepted Solution

by:
benchets earned 0 total points
ID: 40610973
This turned out to be a firmware upgrade on the phone that sorted it - thanks for your help.
0
 

Author Closing Comment

by:benchets
ID: 40620829
.
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

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…
I recently purchased a Bluetooth headset called the Music Jogger (model BSH10). The control buttons on it look like this: One of my goals is to use it as the microphone and speakers for Skype calls. In that respect, it works well. However, I …
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

747 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now