The National Electrical Code® (NEC) 800.2 & 800.52 defines abandoned cable as, "Installed communications cable that is not terminated at both ends at a connector or other equipment and not identified for future use with a tag" and further states that, "The accessible portions of abandoned communications cables shall be removed".
Since 2002, the NEC standards have stated the removal of abandoned cable as a code requirement. The NEC codes clearly point out dangers from the fire and toxic nature of the legacy telecom cables. These cables need to be removed, not just worked around, for the safety of both tenants and emergency responders.
The legacy cable creates headaches for IT and property managers, not only in terms of labor and disposal costs, but also from a network performance and safety standpoint.