I had the same issue with some grandstream wifi phones, switched to ethernet still the same, swapped to a different firmware still the same, swapped phones to a different model and all was cured, but not before wasting a ton of time troubleshooting the network
On Fri, Oct 22, 2021 at 12:58 PM <[email protected]> wrote: > VoIP issues are almost always network issues. Like 99% of the time. > > It sounds like you’ve looked for a network issue, but if it’s at all > possible to look harder then look harder. > > > > *From:* AF <[email protected]> *On Behalf Of *[email protected] > *Sent:* Friday, October 22, 2021 10:39 AM > *To:* [email protected] > *Subject:* [AFMUG] Yealink Phones > > > > Good morning all, > > > > We have recently ran into major issues using Yealink phones, particularly > T54W and T57W. Calls are broken and dropping. We have determined the ISP > and internal networking is not the issue due to the fact that these issues > are not specific to one customer. Does anyone have experience these > products they would like to share the do’s and don’t’s with the Yealink > platform? We have been making small adjustment to the voice settings of the > hardware but are not having any luck. We are not showing any packet loss > between customer and cloud. We are using Unifi switches and Mikrotik RB2011 > firewall. We also head similar results using a SonicWALL. VOIP traffic is > all travels though the Mikrotik and LAN uses the Sonic wall. Quality > issues are becoming more and more frequent but are still very random. > Yealink support is looking into this but not moving fast enough. Thank you > in advance for any information you can share. I am open to any suggestions > at this point. If there is a better suited platform to ask this question > please let me know. I figured I would start with the smartest group of > people I know. > > > > Darrick Potter > > Structured Cabling and Security > > 517 797 3710 ext 110 > > [email protected] > > > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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