Grandstream Networks 502 Installation Manual page 7

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9-1-1 Information
9-1-1
Take a moment to review the 9-1-1 terms at www.comwave.net/911.
Be sure that your 9-1-1 address is up to date.
Log into My Account at www.comwave.net to verify or update your 9-1-1 address.
IMPORTANT:
Every time you change your billing address or travel with your Comwave VoIP Adapter
you will need to update your 9-1-1 address .
7.