Specifications

66 Hardware Description and Reference for Avaya Communication Manager
In fiber-PNC configurations, the bearer paths and control paths are separate. The control
information for port networks travels over a control network. The control information
terminates on the S8720 or S8710 Media Server at one end and an IP Server Interface
(IPSI) circuit pack on the other. The control network can be of one of the following networks:
- A dedicated control network in which an Ethernet switch is used only for the control
network and therefore creates a private LAN
- A nondedicated control network in which control data passes through an Ethernet switch
that is also connected to the customer LAN
Note:
Note: For information on port network connectivity, see Administration for Network
Connectivity for Avaya Communication Manager, 555-233-504.
IPSIs required based on PNs
For configurations where voice bearer is over IP, there must be one IPSI in each PN.
For a direct connect configuration, a single IPSI is installed in only one of the PNs, and this IPSI
controls the other PNs.
For configurations where voice bearer is over CSS or ATM, each IPSI usually controls up to five
port networks. The IPSI tunnels control messages over the bearer network to PNs that do not
have IPSIs.
Note:
Note: An IPSI cannot be placed in:
- A PN that has a Stratum-3 clock interface
- A Survivable Remote Expansion Port Network (SREPN)
For more information on the IP Server Interface, see TN2312BP IP server interface
on
page 258.
Components
S8700-series media server control complex
Both configurations, voice bearer over IP and voice bearer over direct-connect, CSS or ATM,
use the following components and software:
● Two media servers. See either S8720 Media Server on page 68 or S8710 Media
Server on page 72.