The disadvantages of business phone systems aren’t many but like every other system, there are a few shortcomings.u003cbr /u003eu003cbr /u003eBusiness phone systems are VoIP phone systems andu003cstrongu003e are connected over the internetu003c/strongu003e. This means thatu003cstrongu003e if your internet is down, your phone system is down toou003c/strongu003e. u003cbr /u003eu003cbr /u003eThere u003cstrongu003emay often be a time lag in receiving messagesu003c/strongu003e and u003cstrongu003epoor sound or video quality u003c/strongu003edepending on the signal strength.