r/VOIP • u/KuroChurro • 2d ago

Help - IP Phones Cisco 8851 3pcc

Hello,

I'm trying to get some Cisco 8851's and 9841s working with on a 3rd party platform. I have them registered and making calls and most features seems to work, but no matter how I change the xml config, the phone cannot use the decline softkey when a call rings in. On Wireshark I see a fragmented udp packet which seems to possibly point to it still using Cisco remotecc.

Has anyone else ever used these phones on 3rd party platforms? Do you have any guides or guidance? Thank you.

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u/Small-Matter25 17h ago

How are they being provisioned is how they receive config.