peter sutcliffe Posted November 28, 2021 Report Share Posted November 28, 2021 Hello. I have a PBX with a variety of Yealink handsets. 6x T42S, 2x T46S with expansion modules and 7x T46U with expansion modules. PBX was working fine on the previous version 66 and was upgraded by the host to 68.0.2 and we start to get problems which normally sound like the adaptive jitter buffer type of Dalek sounds. The broken audio is only inbound to the handset and intermittant in nature. I have set the jitter buffer to static and various attempts of 120, 180 and 240ms. all with the same complaint from the users. Echo cancellation is turned off as well. These T46 handsets are all autoprovisioned so I have reprovisioned one from the most vocal user and await their feedback. I am hoping that something has changed with the templates and an autoprovision might fix the issue. It did change the ringtones which they also sooked about. I dont think it is a bandwidth issue as it on a fiber NBN service here in Australia and while not high bandwidth, the downstream is greater than the upstream at the site. Transport is UDP, and the preferred CODECS are PCMA and G.729. I am fresh out of ideas and the host can find no issue in the PCAPs they are taking of the calls. Anyone have any other ideas that may help? Quote Link to comment Share on other sites More sharing options...
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