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The server is the central component of a hardware infrastructure designed to offer Unified Communications. It is 's a physical machine with an Internet connection to which all computers and phone terminals are connected. Linux (CentOS and Rhel are also supported by VoipNow) and your PBX should be installed on this server. Its The hardware specifications rely vary depending on the network capacity and on the expected performance.There are several ways you can make good use of a server.
In-house
If you already own an adequate server, you may install an IP PBX and you'll be ready to provide Unified Communications.
Hosted
Your server can be held within a data center; it is highly recommended to resides in a remote data center. It's vital that you choose a data center that is geographically close to most of your customers as the . The quality of the service relies on this.
In the cloud
Some organizations offer infrastructure as a service; for . For instance, you can rent a server from Amazon.com.
You need to make sure your hardware configuration meets your network's needs. You can decide on the performance of your sever taking into consideration the maximum number of concurrent calls you expect to be made on the server. The general formula is that for every concurrent call (with a ulaw codec - G711), you your server will use the resources detailed below.
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The total number of extensions on your server will have a great impact on the server performance. For example, if your server will provide VoIP for to residential clients, most of the extensions will probably be Phone Terminals, which do not require many resources. On the other hand, But if you resell towards businesses, IVRsthings like IVR, Queues and other costly extensions will require a more powerful hardware configuration.
How the server handles PSTN
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For instance, G711u and G711a do not compress packages upon sending them. This means that they will improve your call quality, but they will consume bandwidth. On the other hand, if you use G729 – which is one of the most used codecs – the packages will be compressed and your call quality will be amplified, but this action consumes a larger amount of CPU.translates into more CPU workload.
This is why it's recommended that you A fair conclusion would be that you should always calculate your system to have at least 30% resources free most of the time, so that you won't have to worry about peaks.
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