- Tue 1st Jun 2021, 09:04
The Cisco 7940/7941/7972 and 7975 phones are not SIP phones by default and although they can be flashed with SIP firmware their features and functions are limited. If you haven't purchased these phones yet, don't. They are obsolete! Get yourself some phones that were designed for SIP/Asterisk use. Cisco, Snom, Grandstream, Yealink all do them.
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