If service is also being used with Astound’s High-Speed Internet (“HSI”) service, continued use of the HSI service during a power outage will decrease the battery backup life. Customers who wish to have back up power for both for their internet service and/or extended backup time for their telephone service may purchase from a third-party retailer, at their own cost, an external UPS (Uninterruptable Power Supply). These systems are commonly available through electronics and office supply retailers, whose websites provide additional information on capacity and prices.