Table of Contents
Advertisement
For a heavily loaded system, we recommend 2 GB of RAM. However, the system can
run on machines with far less RAM, but this will depend on your operating system.
Factors influencing memory requirements include the number of voice mails that ac-
cumulate, how much logging information is stored on the system, and the number of
CDRs you store. To keep 2 weeks' worth of information on a heavily trafficked system,
you will need sufficient memory to store that information. The following table reflects
our recommended minimums:
Memory*
Hard Disk**
* Memory requirements will increase according to voicemails, CDR duration, etc.
** Hardware requirements are significantly impacted by recordings, as they consume
large amounts of disk space.
CPU requirements can be a challenge; however, the affinity mask can be used to im-
prove the performance of the PBX. The ideal scenario will be to have a dual-core CPU,
wherein the PBX is bound to one of the cores. This setting instructs the operating sys-
tem to run the PBX on the specified core, eliminating the context switching issues that
can cause problems for time-critical RTP threads.
When determining hardware requirements, you need to factor in the number of parallel
calls, the number of registrations that will be kept alive on the system, and transcoding
issues (i.e., will the CPU need to translate the codecs?). If the CPU only has to pass the
packets through, the CPU performance is practically limited by the I/O-subsystem.
Hard disk space is also dependent on whether or not you'll be recording calls and the
length of time the recordings will be kept on the system. At minimum, 100 MB is
needed, but call volume and other variables will determine whether 100 MB is really
sufficient.
Although the hard disk requirement for the installation is minimal (less than 20 MB),
keeping an eye on the system once it has been in production for a while is essential. Ad-
ditional languages, recorded calls, and log files can fill the disk quickly.
10 Extensions
40 MB
100 MB
Chapter 1: Getting Started
20 Extensions
50 MB
100 MB
3
150 Extensions
150 MB
150 MB
Advertisement
Table of Contents
