Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring
Reexamination Certificate
2005-08-16
2005-08-16
Nguyen, Duc (Department: 2643)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Monitoring
C379S001010, C379S015010, C379S016000
Reexamination Certificate
active
06931103
ABSTRACT:
A method of providing failover service to network phones. A failure of communication between a network phone and a primary call manager is identified. Communication is established with a default network device and directory information is provided to the default network device. The network phones needing failover service then use the directory constructed at the default network device as a failover call manager.
REFERENCES:
patent: 5515418 (1996-05-01), Yamaguchi et al.
patent: 5757904 (1998-05-01), Anderson
patent: 5832222 (1998-11-01), Dziadosz et al.
patent: 6005920 (1999-12-01), Fuller et al.
patent: 6434700 (2002-08-01), Alonso et al.
Butaney Vikas
Tasker Michael Edric
Cisco Technology Inc.
Marger & Johnson & McCollom, P.C.
Nguyen Duc
Taylor Barry W
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