18 CHAPTER 1: VCX SYSTEM CONFIGURATION OVERVIEW
Tab le 3 VCX Software Configuration Options
Depending on the hardware configuration, some services are typically
installed in redundant pairs. For example, the Call Processor Service is
designed to run on redundant servers so if the primary server fails, the
secondary server can take over processing.
However, during installation, specific software services may or may not be
enabled in a given software configuration. For example, the Call Records
Service is designed to run on a single hardware platform. In single-site
configurations, the Call Records Service is enabled on the primary IP
Telephony and Messaging or primary IP Telephony server only.
VCX Hardware Configurations
This section briefly describes the basic hardware configurations that
support VCX systems. Refer to the VCX Installation Guide for more
information. Because VCX system software can be installed in a wide
variety of hardware configurations, you must understand how your VCX
system has been installed before you configure its components.
Standard Software Configurations
Software
Service
IP Telephony
and
IP Messaging
Server
Call
Server
IP
Telephony
Server
IP
Messaging
Server
Authentication
and
Directory
Server
Call
Records
Server
Global
VM
Central
Server
Call Processor Yes Yes Yes
SIP Downloader Yes Yes Yes
Authentication
and Directory
Services
Yes Yes Yes
Accounting
Services
Yes Yes Yes
Provisioning
Services
Yes Yes Yes
Common
Agent
Yes Yes Yes Yes Yes Yes Yes
IP Messaging
Services
Yes Yes Yes
Call Records
Services
Yes Yes Yes