03-12-2016 08:40 PM - edited 07-05-2021 04:46 AM
Hi,
I have a Cisco IP 7920 and I think I need to upgrade the firmware to use SIP (Asterisk). Can someone tell me where I can get the firmware and instructions to upgrade this phone?
Thanks,
Scott
03-12-2016 09:39 PM
Read THIS.
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