A smart-home or residential AV firm does not need a message pad. It needs a first-touch system that can tell the difference between a theater project, whole-home automation inquiry, builder walkthrough request, lighting-control opportunity, support call, and upgrade-sensitive installed-base issue.
Traditional answering services keep the line from sounding completely dead, but they usually do not protect what matters here: project type, partner source, scope fit, budget reality, service-versus-project routing, and the next step that holds a serious consult.
That is why so many integrators technically have phone coverage and still feel exposed every weekend, every install day, and every time a builder or affluent homeowner wants a fast answer. The call got answered. The project still went somewhere else.