What is "quorum call"

In legislatures, a quorum call is used to determine if a quorum is present. Since attendance at debates is not mandatory in most legislatures, it is often the case that a quorum of members is not present while debate is ongoing. In many bodies, motions such as amendments, introduction of new legislation, and recommitment may be approved in the absence of a quorum, provided no member then present objects. A member wishing to delay proceedings (for example, to allow other members time to get to the chamber in order to join debate) may request that the presiding officer determine whether a quorum is present. If a quorum does not appear to be present, debate is suspended, as the only business allowed without a quorum is to adjourn, recess, summon absent members, or compel their attendance if the body has the power to do so.