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106 Avaya Application Solutions IP Telephony Deployment Guide
Mixed reliability options
The reliability options separately available for each PNC method still apply except that
fiber-connected PNs (fiber-PNC) with single control networks cannot be mixed with
IP-connected PNs (IP-PNC) with duplicated control networks. To have duplicated control in the
IP-PNC portion of the configuration, the fiber-PNC portion must have duplicated control.
The PNs in a mixed fiber-PNC and IP-PNC configuration can collectively have multiple levels of
reliability. However, within the fiber-PNC portion of a system (direct, CSS, or ATM-connected
PNs), all port networks must have the same reliability level --- all single control and bearer
networks, all duplicated control and single bearer networks, or all duplicated control and bearer
networks.
The following table summarizes the valid IP-PNC reliability options in a combined IP-PNC and
fiber-PNC configuration.
Connection Method for Mixed PNC Configurations
Fiber Port Network Connectivity
(
Direct-connect/CSS/ATM)
IP Port Network Connectivity
1
1. Any of these configurations can also have duplicated IP bearer.
Reliability Option
Single control network only and Single control network only
Duplicated control network
2
2. Not available with S8500 Servers
and Single control network only
and Duplicated control network
3
3. Only if the fiber-PNC portion has a duplicated control network
and
Single control network for some PNs
and duplicated control network for
other PNs
Duplicated control network and
duplicated bearer network
and Single control network only
and Duplicated control network
and
Single control network for some PNs
and duplicated control network for
other PNs. Duplicated IP bearer
network.