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Cisco 1711/1712 Application:
DDR Backup
DDR Initiated failover to
Analog Modem/ISDN Port
DDR Initiated failover to
DDR Initiated failover to
Analog Modem/ISDN Port
Analog Modem/ISDN Port
Internet Connection Failure
Internet Connection Failure
Internet Connection Failure
LAN
PSTN
Cisco IOS Firewall
Applied to Internet
Connection
Internet
X
X
10/100BaseT
Switch
10/100BaseT
10/100BaseT
Switch
Switch
Analog Modem/
ISDN Port
Analog Modem/
Analog Modem/
ISDN Port
ISDN Port
10/100BaseT Port
10/100BaseT Port
10/100BaseT Port
Cable/DSL Modem
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