How to overcome echo problem with Voice over wireless

[bangoram]

Hi!

Recently we have deployed a wireless network of 5Km range by using a repeater set in between, this network is basically being used for Telemedicine where the hospital from a city is connected to a village trough this link.But unfortunately the setup is up but it is not supporting the basic need ie., as per our requirement it should suporrt VoIP.The connectivity is there but it is annoying to hear the echo of our own voice.How to overcome this problem is there any software to be installed in our machines any solutions!

Thanks in advance!

[M/Q]

The most likely cause is delay. The fact that you have a repeater in the link will introduce a great deal of delay as well as reduce the packet throughput. If at all possible remove the repeater and just have one straight through link. Try to increase signal strength and quality as well. This link will explain Echo.

http://www.voiptroubleshooter.com/problems/echo.html

[bangoram]

Thanks M/Q!

Is there no other options to overcome this problem?? the main reason for having the repeater we were unable to deploy a point-to-point link due to the terrain (Hill station) so we have erected a repeater on a hill which acts as an intermediate between both transmitter and receiver.

I would like to know whether by incereasing the power the problem will get solved??

I am not sure but is there any way to overcome this problem by installing some software(in the communicating stations)to suppresses the echo/delay ?? any idea bout this...

Thanks!

[M/Q]

How are you repeating the signal? Are you using two radios or just one?

[bangoram]

I am using two radios.

[VoCS]

Thanks M/Q!

Is there no other options to overcome this problem?? the main reason for having the repeater we were unable to deploy a point-to-point link due to the terrain (Hill station) so we have erected a repeater on a hill which acts as an intermediate between both transmitter and receiver.

I would like to know whether by incereasing the power the problem will get solved??

I am not sure but is there any way to overcome this problem by installing some software(in the communicating stations)to suppresses the echo/delay ?? any idea bout this...

Thanks!

You would have to be a bit more specific in what your setup is.

Delay on the network side is almost always unavoidable when dealing with a hybrid wireless/wired network. There is no 'network' device that will fix the real source of the problem which is on the end users side.

Whatever you are using to transcode from PSTN to VoIP is where you want to start looking for answers. That is where most people resolve echo caused by packet latency.

Edit: Your physical location makes a difference to. The PSTN in some areas may cause 'LOUD' echo within their own network.

[John_in_NC]

radios does not cause echo. It causes latency

Two wire to four wire is where echo happens.

In other words, it is when voip meets wireline.