Channel and Link testing specifications are from the EIA/TIA 568 standards, they are not codes. The standards are produced as voluntary guidelines although some jurisdictions adopt the standards much as they adopt the NEC as a code. Where this is done, the installations must be compliant with the EIA/TIA standards. It is only my opinion, based on my experience and education...I am always willing to learn, educate me!
Daron J. Wilson, RCDD
daron.wilson@lhmorris.com