Hi,I was using cisco unified configuration on uc 500 and deleted extention while phone was plugedinNow the phone does not connect and says registration failedWhat should i do i am in big problem it was my boss extentionI did same misstake with 7975 a...

Dear friends ,I was using cisco unified communication assisstent on uc 500 and deleted extention while phone was pliged inNow its not registering say registration rejected some thong like thisI am freaking out its my bosses extentionPlz help me i am ...