<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255); ">I'm trying to use Asterisk as a PSTN simulator to run performance tests for echo cancellation algorithms. I'm using the following configuration:<div>
<br></div><div>SIP <-----> Asterisk 1 <----> Asterisk 2 <----> Echo()<br clear="all"><div><br></div><div>Asterisk 1 and Asterisk 2 are connected using E1. Echo() is the dialplan application.</div><div><br>
</div><div>The problem is the high delay using this configuration: 20 ms only in Asterisk 2. I've read the source code of chan_dahdi, and I think the channel has a 20 ms "buffer" (160 samples). Algorithms like mg2 and kb1 are configured to accept 128 taps (16 ms), so 20 ms is too high.</div>
<div><br></div><div>Someone knows how I can reduce the delay to at least 10 ms? Should I change something in the source code?</div><div><br></div>Thanks in advance,<div>Gustavo Santos.</div></div></span><div><br></div>-- <br>
Atenciosamente,<div>Gustavo Santos.</div><br>