Blackberry 6710 Getting Started Manual page 71

Your handheld dials the emergency phone number.
Note: When you have a password enabled on your handheld and your
SIM card is removed, your handheld locks. Roll the trackwheel. The
Device is locked dialog box appears. Click Emergency Call to dial the
emergency phone number.
If your handheld radio is turned off when you attempt to place an
emergency call, the radio is turned on automatically and the call is
placed.
Getting Started Guide
Placing emergency calls
71