Practical VoIP Using VOCAL

Installing VOCAL onto a Multihost System

As Table 3-1 showed, VOCAL is scalable and, in a network with 26 hosts or more, can support many thousands of users. Our recommended method for deploying a multihost system is to get VOCAL running on one host as shown in Chapter 2. Then, using your preferred file transfer routine, copy the binaries to the other hosts, edit a configuration file, reprovision some of the servers, and then restart VOCAL. Here is an example set of instructions that uses scp to copy the binaries from host to host. If you prefer to use copy or ftp, it’s up to you.

Assume that there is a network with four hosts named Host1, Host2, Host3, and Host4. In the instructions, we have used the abbreviations for the different server types as they appear in the configuration file.

VOCAL Configuration File

Table 3-2 provides a list of abbreviations found in the /usr/local/vocal/etc/vocal.conf file and their definitions.

Table 3-2. /usr/local/vocal/etc/vocal.conf abbreviations and definitions

Abbreviation	Definition
snmptrapd	Simple Network Management Protocol trap daemon (see Chapter 17)
netMgnt	Network Management Station (see Chapter 17)
vmserver	Voicemail server (see Chapter 14)
hbs	Heartbeat server (see Chapter 17)
fsvm 5110	Voice Mail Feature server (see Chapter 14)
uavm 5170 uavm 5171 uavm 5172 uavm 5173 uavm 5174	Voice Mail User Agents (see Chapter 14)
siph323csgw 5155 5150	SIP H.323 Call Signaling gateway (see Chapter 16)