Click Next until you see the Personal Station Access (PSA) Associate Code field.
In the Personal Station Access (PSA) Associate Code field, type an FAC for a user to associate a telephone.
In the Personal Station Access (PSA) Disssociate Code field, type an FAC for a user to dissociate a telephone.
To type an FAC in the Personal Station Access (PSA) Disssociate Code field, the Personal Station Access (PSA) field in the System Parameters Customer-Options screen must be set to y.