Echo in my SIP calls

Asterisk Asterisk General
1

Hello, i have 5 Linksys SPA921 phones and when i call one of them i can hear my voice in echo.
I think the trouble could be in the handset but now i setup all the Linksys SPA921 handset voulmen to a lower value, but i still hearing myself in the call.
When i say " Hello" i hear my voice in echo just 1 TIME.

What could be the problem? How can i fix this problem? I’m using asterisk-1.4.21.1

2

What’s the call path?

VoIP phone to VoIP phone?

VoIP phone to PSTN card?

VoIP phone to SIP/IAX provider?

Cheers.

3

Sip to SIP, internal calls at office in the same LAN.
Calling to reception i hear an echo, calling to sales i hear an echo,etc…
In my local LAN.

4

Howdy,

Nothing to do with Asterisk in that case, it’s the handset’s responsibility to do its own acoustic echo cancellation. Try newer firmwares, if they’re available, and cut the gains.

Cheers.

5

Hi

you asked this same question last week

viewtopic.php?f=13&t=75867&p=149866&sid=d5251c4613c91e4811f165f820e9379d#p149866

Did you check the volume ? TBH the Sipura handsets have pretty poor audio performance any way

Ian