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- Jun 24, 2020
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We are using Yealink T21P E2 for our extensions with firmware 52.84.0.95 and a reception model Yealink T29G with firmware 46.83.0.130. All are giving an unregistered error and we want to do a provision on the Yealink web interface the passwords and usernames do not want to access the system. Do anyone have some advice.