We appear to have found an intermittent issue with the GSM codec when we use the Monitor( ) application, possibly when packet loss is encountered. We appear to have DC shift once it has occurred. I raised an issue via the ticketing system for this, but the version we are using is too old to support… which is fair enough, but we are not in a position to upgrade at present.
For reference the issue raised was here: issues.asterisk.org/view.php?id=18934
My question is, has anybody else seen this issue? Does anybody know of any workarounds?
At the moment, we are having to considering giving a small number of customers the ability to use Record( ) in a raw
format rather than have it compressed using the GSM codec.
Asterisk version is 1.4.11 with some back-ported code.