Echo on IP Phones using Analog Trunks

[juliend2011]

Hi all,

I have echo problems on IP Phone 9621G/9620.

I'm using IP Office 500v2 7.0 (23)
Combo/ATM
VCM32/ATM

I'm using analog trunks ( basic loop PSTN )

Its an intermittent trouble , we tried to trace the call in trouble, and we use Wireshark, when we listen to the call, we dont hear the echo .. but on the phone we have truly echo problem ..

Do you think it could be the phone IOS ? We tried to play in the analog options of the trunks, switching echo latency to 64 MS, still giving problem.

If you have an idea, please reply, thk

 

[IPGuru]

IP handset & analog lines is not rea;y an Ideal setup.
GSM silence suppression can help with this one

Computers are like Air conditioners:-
Both stop working when you open Windows

 

[djmtrar]

ip (lines & phones, etc...) and analoge lines.... echo sure...!


Regards!
Djmtrar

 

[TheZCom]

I also avoid analog trunk & IP phone designs. However, I did use the analog trunk impedance value of 'Alternate2' or 'Alternate3' to fix a problem that was similar to the one you describe. Give it a shot. Z

 

[juliend2011]

Hey, thanks all for your reponse, very appreciated,

Il take a look with what you gave me.

Regards

Julien

 

[juliend2011]

@TheZCom

I have 8 analog lines, should I put ''alternate2'' for all of them ? Or some with alternate2 and other with alternate3 ?

Thanks

Julien

 

[TheZCom]

You would try "Alternate2" on each analog trunk. If that doesn't work out, then try "Alternate3" on each.

 

[juliend2011]

Deal ! Il try this,

Since the installation ( 4 months ago ) that we have this problem, If it could resolve, that will be my christmas job gift

Thanks again

 

[VoIPP]

Is echo a common problem with all Voip/analogue systems or is this just an IPO thing?

 

[amriddle01]

No, it's a common issue, but some deal with it better than the IPO does

Not happy with Avaya ATM....

http://www.ipoffice.tel

 

[juliend2011]

With my personal experience, yes its a common issue, but like amriddle01 saied, depend on what system, I know that Cisco provide a nice ''Echo Cancelation'' automatic option, so it's easier for us and seems to works well too.