220 ILCS 65/5
Any mortgage or deed of trust which shall hereafter be executed by any telephone company upon its real and personal property in the manner provided for the execution of mortgages upon real estate shall be and constitute a valid lien against the rights and interests of any third persons upon all and every part of the property of said company which is described in said mortgage and which is situated in any county in this state where said deed of trust or mortgage shall be recorded in the manner provided for the recording of mortgages upon real estate; and all mortgages or deeds of trust which have heretofore been executed and recorded in the manner provided by law for the execution and recording of mortgages upon real estate, shall be and constitute valid liens as against the rights and interests of third parties which shall be acquired subsequently to the recording in any county where any property of said corporation may be situate of confirmatory conveyance or assurance: Provided, if said original mortgage or deed of trust shall not have been recorded in any county where any property of said company shall be situated, then the recording of the original instrument in such county shall make said deed of trust or mortgage a valid lien as against the rights and interests of third parties acquired subsequently to such recording of said instrument.
220 ILCS 65/5