Since Recent firmware Update of S20, outbound calls drop after 3-3:15 minute mark

Yeastar S20 was working fine for most of Yeastar until recent latest firmware update ( Know both inbound/outbound calls drop around the 3 -3:15 minutes.

We are using SIP Trunking, tested with all phones in our office, which are a mix of various brands Yealink T46G, GS GXP2160.

We are hoping that maybe there is a timeout setting or some new check mark somewhere.

Any help is appreciated.



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