Kuna keskse juhtalamlüli käitumine on üsna keeruline, käsitletakse vahel teenuse juhtimise mõningaid aspekte teenuse spetsifikatsiooni osas, kuigi need on tavaliselt osa mõõteprotokollist.
As the medium access control sub-layer behavior is quite complex, some aspects of the service invocation handling are discussed in the service specification part, although these are normally part of the protocol specification.
