[John Clark]

This message is to inform you of scheduled network maintenance.

Maintenance Summary: Email roaming connectivity interruption to accommodate Americas BlackBerry Infrastructure administrative maintenance

**** Correction to: Impact, Maintenance Summary ****

Impact: BlackBerry subscribers using their home SIM card when roaming in another location (GRX roaming) are not expected to be affected by the maintenance. BlackBerry subscribers who switched to a local SIM card when roaming in another location (Relay roaming) may be unable to use BlackBerry services during the maintenance. [0379]

Ticket Number: BBCHG36098

Change Window Start Date and Time: 22 June 2008 06:00:00 (GMT)
Change Window End Date and Time: 22 June 2008 10:00:00 (GMT)
Estimated Duration of Service Impact: 4 hour(s) and 0 minute(s)
% of Subscribers Affected: 100.00 (estimated)

Purpose: RIM Software Upgrade

EST = GMT - 5 hours
EDT = GMT - 4 hours
AEST = GMT + 10 hours