https://community.cisco.com/t5/accessories/headset-plantronics-hw520/m-p/4526524#M146 <P>Hi,</P><P>Good day!!</P><P>&nbsp;</P><P>I purchased CISCO 7821 IP Phone , i want to connect Plantronics headset HW520 butt when i connect the headset throught direct cable with u10 phone not worked.As RND it is compaitiable with cisco 7841 .By default Analogue Wideband is also enabled butt still same problem .</P><P>Firmware Version of CISCO Phone:&nbsp; &nbsp;sip78xx.12-8-1-0101-482</P> Thu, 10 Mar 2022 07:15:30 GMT JB786 2022-03-10T07:15:30Z https://community.cisco.com/t5/accessories/headset-plantronics-hw520/m-p/4526524#M146 <P>Hi,</P><P>Good day!!</P><P>&nbsp;</P><P>I purchased CISCO 7821 IP Phone , i want to connect Plantronics headset HW520 butt when i connect the headset throught direct cable with u10 phone not worked.As RND it is compaitiable with cisco 7841 .By default Analogue Wideband is also enabled butt still same problem .</P><P>Firmware Version of CISCO Phone:&nbsp; &nbsp;sip78xx.12-8-1-0101-482</P> Thu, 10 Mar 2022 07:15:30 GMT https://community.cisco.com/t5/accessories/headset-plantronics-hw520/m-p/4526524#M146 JB786 2022-03-10T07:15:30Z