I have cisco phone 7821 model , has an issue with miss call notification not shown in the screen.
the phone is completely new .
any idea? why there is no notification shown
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WelshPaul wrote: You might find this useful:Before attempting to upgrade the firmware, disable your antivirus and firewall as these often prevent the phone from communicating with the TFTP server.
https://www.cisco.com/c/en/us/support/d ... 0-mul.html
http://192.168.2.139/admin/upgrade?tftp://192.168.2.147/sip88xx.11-0-1MPP-477.loadsis entered in the address bar.
Cisco wrote:If the phone is meant to register to a non-Cisco call manager solution, then ignore these files or error messages. The most important files the phones need to download are the phone firmware, dialplan and the SEPmacaddress.cnf.xml files. Any other file(s) are trivial.If the MAC address of the phone is 3C410E4B1AFE then rename the file SEP[MAC].cnf to SEP3C410E4B1AFE.cnf or SEP3C410E4B1AFE.cnf.xml
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