Telephone service is provided by a variety of independent service providers. In many cases, telephone service has already been installed up to and including the telephone closets located on each floor of the building. Your chosen installer must locate your telecommunications control equipment within the confines of your leased space and coordinate with the telephone service provider on how best to route the wiring to the appropriate closet.
Any addition to the communication cabling through the ceiling above your suite needs to be cleared through Building Management. New cabling shall meet all the requirements of the NEC and other national and applicable safety codes. Any cabling in the plenum and building risers that will no longer be used must be removed at tenant's expense.