Yes, you can use your own modem with PenTeleData internet service. However, it is important to ensure that the modem you choose is compatible with the specific type of internet service you are subscribed to, whether it is cable or DSL. PenTeleData supports a variety of modem models, and it is recommended to check for the specific requirements regarding technical specifications and compatibility. Typically, modems that meet DOCSIS 3.0 or higher standards are preferred for cable internet. If you decide to use your own modem, you may also need to configure it appropriately to connect to the PenTeleData network. For further information on compatible modems and configuration details, it would be advisable to refer to PenTeleData's website, where you can find updated resources and support information.