HPEC works using Zaptel-1.2.15 on a P4-2.4 Centos 4.4 system with a TDM400 for FXO interface. System is not Trixbox. dmesg reports HPEC in use. When I upgraded to Zaptel-1.4.1, which now supports HPEC, I get no audio in either direction on the Zap channels. SIP to SIP, SIP to IAX all OK. dmesg reports HPEC in use. Back to Zaptel-1,2,15, audio is back. Has anyone tried (not just compiled) HPEC with Zaptel-1.4.1? My answer to Digium tech support has gone unanswered so far.
I’m having this same problem: Centos 4.4 ast 1.4.2 hpec enabled and licensed. I get no audio on zap channel. If i retreat to zaptel 1.4.0, audio is back and working.
Don
Set “echotraining=no” in zapata.conf and restart Asterisk.
echotraining=no worked! Thanks… but how did you figure that out? Something in the docs that I missed?
Don
Yes, it did work for me as well. One question though. In the software ECs, you can specify a length in samples, to bound the correlation of the echo component. I thought the docs for HPEC said you programmed the HPEC length in the same way. In the case of “no”, what sample length is used, and is it even changeable? I thought it could be desirable to shorten to conserve processor loading in some cases. It works, so I probably should not be too concerned, but just interested.
Regards,
[quote=“edhorton”]Yes, it did work for me as well. One question though. In the software ECs, you can specify a length in samples, to bound the correlation of the echo component. I thought the docs for HPEC said you programmed the HPEC length in the same way. In the case of “no”, what sample length is used, and is it even changeable? I thought it could be desirable to shorten to conserve processor loading in some cases. It works, so I probably should not be too concerned, but just interested.
[/quote]
"This option is configured with a length, in taps, of echo cancellation to be
performed. For example, to set a length of 128ms (1024 taps), the appropriate
setting would be:
echocancel=1024
To set a length of 32ms (256 taps), the appropriate setting would be:
echocancel=256"
Hi Guys,
I am also very much interested in this. I have installed and enabled the HPEC on my box and it did worked fine. But now, what I experiense is a talk back (or I hear myself) when I make outgoing calls from my GXP2000 handsets. (I have TDM04B’s installed).
Is there anyother setting needed to be set or removed from zapata.conf, since I am now running the HPEC software. I am also thinking, if the “echotraining” parameter is still needed. I have it currently set to 800. (i.e echotraining=800).
Can anyone please advice on this.
Cheers to all.
can anyone help me on how to sort out the talkback issue i get on my IP Phones.
Please what and what parameters are need be added or removed, now that I have the HPEC installed and enabled.
What i experience right now is a talkback (i.e I hear myself on my phones) when making an ougoing or trunk calls. No talkback when making internal (or ext. to ext.) calls.
Cheers to all.
I would try asking this question on the asterisk-users mail list. I have found it to be much better than this and other forums. I don’t think a lot of people actively monitor them.
trixbox.org/forums/trixbox-f … runks/hpec
looks like you need echotraining set to no.
make sure you enable hpec each time asterisk starts up.