3Com VCX V7000, Installation Manual

Page: 21 / 488

Hardware Configurations 21
The version 7.1 upgrade procedure allows you to enable Global Voicemail
Integration on servers running IP Messaging software. However, you
must
install IP Messaging software on a GVCS, and then set up the GVCS
through the IP Messaging administrator configuration interface
before
enabling Global Voicemail Integration on regional and branch office IP
Messaging servers. Refer to the
IP Messaging Module Operations and
System Administration Guide for more information and for configuration
options.
With VCX software version 7.0 and higher, you can set up IP Messaging
in a client/server configuration. An IP Messaging server can support up to
20 IP Messaging clients. One client can be dedicated to non-voice
applications such as Web provisioning, e-mail synchronization, and
logging. The remaining clients can be dedicated to voice functions. This
type of setup diverts the stream of voice traffic and improves the IP
Messaging server performance. Clients should be located on the subnet
with both management servers or have a minimum of 200 Mbps IP
backbone on a dual subnet network configuration. See the
IP Messaging
Operations and System Administration Guide for details.
Network Interface
Configuration
VCX systems require that each server in a regional office have both eth0
and eth1 configured. Branch office servers must have only eth0
configured. Single office systems are considered to be the same as
regional offices for this purpose.
CAUTION: For each regional server, both Network Interface Cards (NICs)
must be connected to only one subnetwork. However, if you configure
the primary regional server on one subnetwork, you can configure the
associated secondary server on a different subnetwork.
For regional servers, individual software services use either eth0 or eth1
as follows:
eth0 eth1
IP Messaging Call Processor
Common Agent SIP Downloader
Authentication and
Directory Server Accounting Server
Provisioning Interface