Recent content by vancuong

  1. Unsupported Problem With Cisco Phone 7821&7841 on 3CX

    Hi everyone i am having some problems with cisco phone when using on 3cx: Cisco phone 7841 & 7821 (firmware: sip78xx.14-1-1-0211-134) 3cx version 18.0 update 5(Build 418) 1 - on cisco cannot display contacts and call history as shown below: 2 - the call cannot be transferred. When pressing...
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