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Patent Application Publication
Jan. 29, 2004 Sheet 3 0f 9
US 2004/0019691 A1
FIGURE 3A
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\,
PING INTERN ET
SERVICE
PROVIDER
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v
INTERNET
PING FAILS‘?
SET FLAG FOR
INTERNE
‘
FAILURE
NO
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\/
PING LOCAL
NETWORK
LOCAL
NETWORK
PING FAILS?
YES
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SET FLAG FOR
LOCAL NETWORK
FAILURE