snom ONE Technical Manual - Atcom

2
Deploying the snom ONE IP Telephone System
Memory/Hardware Requirements
Memory is usually not a problem today, but influencing factors include the number of voice mails, the
amount of logging information that is stored on the system, and the number of CDRs. If you want to keep
2 weeks’ worth of information and you have heavy traffic, you will need enough memory to store that information.
At minimum, any system needs at least 40 MB of memory. For 20 extensions, 50 MB is recommended,
and for 150 extensions, 150 MB.
10 Extensions 20 Extensions 150 Extensions
Memory* 40 MB 50 MB 150 MB
Hard Disk** 100 MB 100 MB 150 MB
* Memory requirements will increase according to voicemails, CDR duration, etc.
** Hardware requirements are significantly impacted by recordings, as they consume lots of disk space.
CPU requirements can often be a challenge. The ideal scenario will be to have a dual-core CPU, wherein the
entire system is bound to one of the cores (processor affinity mask), and the operating system and other nonreal-time
applications use the other core. In this scenario, the operating system will use one core whenever
possible.
(Virtualization is also an option.)
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 you will be recording calls and the length of time those
recordings will be kept on the system. At minimum, 100 MB will be 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), it is essential that you
keep an eye on the system once it has been in production for a while. Additional languages, recorded calls,
and log files can fill the disk quickly.
USB Device
The snom ONE software has been loaded onto the 1 GB USB drive that was shipped with this book. This
section contains information about the USB drive.
Warnings
The USB drive is for indoor use or storage with a temperature range between +0°C and +70°C. Not for
outdoor use! Do not use or store product in rooms with high humidity (for example, in bathrooms, laundry
rooms, damp basements). Do not immerse product in water and do not spill or pour liquids of any kind
onto or into any part of it. Do not use product in surroundings at risk for explosions and do not use the
handset in such surroundings (paint shops, for example). Your device may contain small parts. Keep them
out of the reach of small children.
Standards Conformance
This device is CE and FCC-certified and meets European and U.S. health, safety, and environmental standards.
Unauthorized opening, changing, or modifying the device will cause the warranty to lapse and may
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