Page 65 of 1315.8.1.1 How to Make/Receive Voice CallsUsing the smartphone or tablet Settings, connect to the Optimizer Voice wireless network'wxa-153-xxxx'.Open the XGate Phone App to make and receive calls.Note: Standard voice calling rates apply.Only one phone call can be active at a time. (Multi-userVoice and SMS is possible -- up to four consectivesessions -- with the optional RedPort VoIP service. Contactyour service provider for details.)IMPORTANT: Inmarsat IsatHub (iSavi) users. Please seeAppendix C for the iSavi Quick Start Guide containinginformation and instructions for setup and use of theOptimizer Voice with the iSavi terminal for voice calls andsms messaging.