Source note · Echo on VoIP calls
In Asterisk chan_dahdi, echocancel accepts yes, no, or a power of two from 32 to 256 taps, and taps divided by 8 gives milliseconds, so 256 taps is 32 ms.
Checked 2026-09-25
echocancel=256 means 256 / 8 = 32 ms.
- Vendor
- Asterisk
- Product
- chan_dahdi
- Subsystem
- echo-canceller-tail
- Deployment
- on-premises
- Region
- not restricted
- Release range
- master branch as of 2026-09-25
- Checked
- 2026-09-25
Sources
- asterisk/configs/samples/chan_dahdi.conf.sample — Asterisk project (Sangoma) · tier 3 vendor-maintained repositories · chan_dahdi.conf.sample, echocancel comment block
Cite this note
APA
WarmTransfer. (2026, September 25). Echo on VoIP calls: source note echo-on-calls-dahdi-taps-to-ms. WarmTransfer. https://warmtransfer.net/knowledge/claims/echo-on-calls-dahdi-taps-to-ms
BibTeX
@misc{warmtransfer-claim-echo-on-calls-dahdi-taps-to-ms,
title = {Echo on VoIP calls: source note echo-on-calls-dahdi-taps-to-ms},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/echo-on-calls-dahdi-taps-to-ms},
note = {Source note echo-on-calls-dahdi-taps-to-ms, checked 2026-09-25}
}