Hello to all, I have callmanager express version 4,1, in I registered a telephone model 7920, this telephone it receives and it makes calls without no problem, but when it makes the forward by nonanswer or by occupied to the voice mail, after reading the voice mail leaves the line retained, is to say of the 2 ephone-dn that I form to him, 1 of them this retained by the forward to the voice mail and I cannot do called by that channel somebody it knows that I must do so that the telephones or the CUE releases the line and it does not leave it retained. Thanks