10.53.2.2. Hold of a Conference 
- A member can place the conference on consultation hold by consulting to a station outside the conference in the usual way.
- A member (DigiTe only) can place the conference on background hold by performing any type of pickup.
- A member (DigiTe only) can place the conference on manual or exclusive hold by performing manual or exclusive hold in the usual way.
In both cases the conference does not hear any hold tone and is in effect
still functional.