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Avaya Definity Gx/PBXLink Integration Guide for CiscoUnity 4.0
OL-3105-15
Avaya Definity Gx/PBXLink Integration Guide for CiscoUnity 4.0 Integrating a Secondary Server for CiscoUnity Failover
Integrating a Secondary Server for Cisco Unity Failover
The Cisco Unity failover feature enables a secondary server to provide voice messaging services when
the primary server becomes inactive. For information on installing a secondary server for failover, refer
to the applicable Cisco Unity installation guide, available at
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/prod_installation_guides_list.html.
For information on failover, refer to the CiscoUnity Failover Configuration and Administration Guide.
The Domino version of the guide is available at
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_unity/fail/fail401/dom/index.htm. The
Exchange version of the guide is available at
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_unity/fail/fail401/ex/index.htm.

Requirements

The following components are required to integrate a secondary server:
Phone System
A data splitter unit to split the single serial cable from the first PBXLink box (which connects to the
Cisco Unity servers) into two serial cables.
Two additional RS-232 serial cables (to be used with the serial cable that was connected from the
PBXLink box directly to the primary server when it was integrated with the phone system). With
these three serial cables, connect one serial cable from the SMDI port in the first PBXLink box to
the data splitter unit; connect the second serial cable from the data splitter unit to the serial port on
the primary server; and connect the third serial cable from the data splitter unit to the serial port on
the secondary server.
CiscoUnity Server
One secondary server for each primary server installed and ready for the integration, as described in
the applicable CiscoUnity installation guide and earlier in this integration guide.
The applicable cable configuration for each analog voice messaging port to simultaneously connect
the phone system to the corresponding ports on both the primary and the secondary servers. For
example, connect port1 on the phone system with both port 1 on the primary server and port 1 on
the secondary server.
A license that enables failover.

Integration Description

The phone system uses PBXLink boxes to send call information to the primary and secondary servers.
The analog voice messaging lines from the phone system provide voice connectivity to the primary and
secondary servers. Figure3 shows the required connections.