June 2004
Intermediate to advanced
408 pages
12h 6m
English
book
THE ROAD TO IP TELEPHONY: HOW CISCO SYSTEMS MIGRATED FROM PBX TO IP TELEPHONY
by Stephanie L. Carhee
Content preview from THE ROAD TO IP TELEPHONY: HOW CISCO SYSTEMS MIGRATED FROM PBX TO IP TELEPHONY
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The Road to IP Telephony
(240)
requirements. The power matrix in Table 5-4 gives a summary of how Cisco managed its
power requirements and standards.
Serviceability—Five 9s
Availability and performance goals and standards set the service expectations for the Cisco
support team and help to define service and support requirements for the IP Telephony
network. We included performance factors such as delay, jitter, maximum throughput, and
bandwidth commitments. Availability for a converged network includes IP Telephony and
gateway availability, in addition to overall network availability.
Table 5-4 Power Matrix
Reliable Networks
High-Availability
Networks ...
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