Chapter 1 Planning for Personal Assistant

Creating Server Clusters

2.Choose a server, for example the MCS-7835-H1-IPC1.

3.Determine how to install the Personal Assistant components, for example, whether you want the Personal Assistant server and speech-recognition servers on separate systems.

4.Determine how many sessions you must support for your users:

1750 users divided by 25 = 70 call-interception sessions

1750 users divided by 50 = 35 speech-recognition sessions

You need enough servers to support at least this number of sessions. When you configure the servers, you specify the actual number of ports in use, so if you intend to use fewer than the maximum, take this into consideration when determining the number of servers that you need.

5.Use the information in Table 1-2to determine that if you install the Personal Assistant server and the speech-recognition server on separate MCS-7835-H1-IPC1 systems (for a total of two systems) you can support:

70 call-interception sessions

36 speech-recognition sessions

Therefore, you can support 1750 users by using two MCS-7835-H1-IPC1 systems: one system for the Personal Assistant server and one system for the speech-recognition server.

6.Be sure to add the servers by using the Personal Assistant administrative interface:

Add the speech-recognition servers to the System Configuration settings. See the “Configuring Speech Recognition” section on page 4-4.

Add the Personal Assistant servers to the Server Configuration settings. See the “Configuring Personal Assistant Servers” section on page 4-10.

7.You also must add the number of supported ports by using the Personal Assistant administrative interface:

Add the supported number of media ports in the Server Configuration settings. See the “Configuring Personal Assistant Servers” section on page 4-10. Although your selected server configuration supports up to 36 ports, you only need 35 ports for your users.

Add the interceptor port addresses in Server Configuration settings. See the “Configuring Personal Assistant Servers” section on page 4-10. In this setting, enter the interceptor ports that cover all 1750 users. Although your configuration supports 70 simultaneous sessions, the interceptor ports must cover all users you are supporting.

8.Consider configuring load balancing (see the “Setting Up Personal Assistant Server Load Balancing” section on page 1-13) or adding failover servers (see the “Creating a Personal Assistant Server Cluster With Failover” section on page 1-15) for greater redundancy.

Setting Up Personal Assistant Server Load Balancing

A single Personal Assistant server can handle a number of simultaneous sessions, which you define when you set the number of media ports (see the “Server Configuration” section on page A-16). When all media ports are being used, new callers receive a busy signal from Personal Assistant unless you set up load balancing among the Personal Assistant servers in each Personal Assistant server cluster.

If you are not using failover servers, and if a Personal Assistant server becomes disabled, no other server takes over the media ports of the disabled server. This reduces the number of available simultaneous sessions with Personal Assistant. However, you can set up load balancing in the cluster to mitigate the effects of a disabled server.

Cisco Personal Assistant 1.4 Installation and Administration Guide

 

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Cisco Systems 1.4 manual Setting Up Personal Assistant Server Load Balancing

1.4 specifications

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