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“Real” Cisco phones like those behind President Zelenskyy on magazine covers take .cop.sgn files, and can deal with SSL-VPN, encrypted media and/or signaling, I
by numpad0 4y ago
“Real” Cisco phones like those behind President Zelenskyy on magazine covers take .cop.sgn files, and can deal with SSL-VPN, encrypted media and/or signaling, IPv6, device certificates, etc. those features with a guard on duty usually suffices. It’s available if you need it and are willing to pay for, and freemium version is just coming later.
(They’re EOL too and on eBay dirt cheap. I don’t know if my calls are actually encrypted but it can be fun to burn a weekend trying to register it to FreePBX)
- simfree 4y agoCisco phones are rough even with CUCM as the central server. They freeze randomly when connected to CUCM, to the point that its a pastime to walk into an office and look at the time and date shown onscreen on all the frozen Cisco phones. Note that this freezing issue primarily affects phones made in the last decade from Cisco.
- bombcar 4y agoCUCM was originally developed by Selsius and never really felt like a "Cisco-quality" product.