VoIP phone service depends not only on your continued subscription (and payment) for the service, but also on Internet connectivity and power to function. In the event of power, network, or Internet outages (including congestion), or if your service is disconnected or suspended due to non-payment, you may experience a failure, disruption or delay in your 9-1-1 service. We recommend that you keep an alternative phone service (such as a cellular telephone) handy to increase the reliability of your access to emergency services during any service interruption.