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OZEKI NG SMS Gateway - Product Guide

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Automated phone calls?
Ozeki Phone System XE VoIP PBX software is an advanced PBX built for automated voice calls and 2 way SMS messaging. It has outstanding APIs for software developers. It can be used for:

Phone calls from SQL
Phone calls from HTTP
Voice and SMS applications

Callcenter developers
If you are working on telephone solutions, please check out the Ozeki VoIP SIP SDK.
It can be used to create VoIP client and server software.

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E-mail: info@ozekisms.com

If you have a technical question, please submit a support request on-line.

Recommended computer hardware

If you wish to find the optimal hardware configuration for your SMS gateway system, you should have some information about the way Ozeki NG SMS Gateway uses the computer resources. This guide gives you information on this topic and provides hardware configuration examples and recommends specific computer models for certain usage.


The performance of Ozeki NG SMS gateway depends on the underlying computer system. The software was designed to take advantage of large memory and parallel processing capabilities. Ozeki NG SMS Gateway performs significantly better on multi core and multi processor systems. The software keeps most of the data that is required for operation in memory. The hard disk access and the hard disk performance is not the most critical part of the configuration. The most important is to have a fast processor and large memory space.

System resource management

The core components of Ozeki NG SMS Gateway are:

ComponentResource demand
Service provider connections
(e.g.: UCP connection to T-mobile, SMPP to Vodafone)
CPU resources
Users and applications
(e.g.: A C# application or a web application who sends messages over HTTP or a person (an office user) using an office client, such as Excel SMS client)
CPU resources, Memory resources
Logging, reportingHDD resources
Routing, resource managementCPU resources are used. (This unit is responsible for distributing system resources among other components)

Concerning CPU resources, separate processing threads are used for each service provider connection and each active user or application. As the number of active threads increase the amount of CPU processing power consumed is also increased. If you wish to serve a lot of users and you wish to have a lot of service provider connections, get a powerful CPU or put more CPUs in your server. (For optimal performance a thread pool is used to make sure inactive users and inactive service provider connections do not take up system resources.)

Concerning memory resources, messages being processed or that are waiting for processing are stored in memory. The more memory you have the more messages can be cached in memory which gives you better throughput. If you want to send or receive a large number of messages you should have more RAM.

Large hard disk space and fast hard disk access is not the most crucial part. The software tries to do everything in memory. You should get a fast hard disk if you want to configure detailed logging or you want to save messages to the hard disk. For example if you setup an SQL to SMS gateway configuration, where all messages that go through the system should be saved into a database, your system will use the hard disk extensively. If you configure an HTTP to SMS gateway system with low log level your system will not use the hard disk to often.

Example system resource demand

Example #1: If you have many service provider connections, and many users accessing the SMS gateway directly, each sending a small number of messages, your system will need fast CPU, medium RAM, low HDD.

Example #2: If you have a few service provider connections, one or two applications connected to the SMS gateway directly, each application is sending a large number of messages, your system will need medium CPU, large RAM, low HDD.

Typical hardware configurations

The best method to select the appropriate hardware configuration is to calculate the number of messages you need to send and receive and to determine the average message throughput (message per minute MPM or message per second MPS). In the following table we give you common hardware configurations.

Capacity Hardware configuration Recommended model
5 MPM - 30 MPM
(MPM = Message per minute)
CPU: Intel Pentium 4D, 3 Ghz (Dual core)
OS: 32 Bit
HP ProLiant ML110 G5
Dell PowerEdge SC440
1 MPS - 25 MPS
(MPS = Message per second)
CPU: Intel Xeon 3000, 2.33 Ghz (Dual core)
OS: 32 Bit
HP ProLiant DL145 G3
Dell PowerEdge 860
50 MPS - 200 MPS
(MPS = Message per second)
CPU: Intel Xeon 5000, 3 Ghz, (Quad core)
HDD: 120 GB, SCSI (Raid 0 or Raid 5 is recommended)
OS: 64 Bit
HP ProLiant DL180 G5
Dell PowerEdge 1950 III
300 MPS - 500 MPS
(MPS = Message per second)
CPU: Intel Itanium 2 / Intel Xeon 7100, 3.4 GHz, (Quad core, 2-4 CPU)
HDD: 120 GB, SCSI (Raid 10 is recommended)
OS: 64 Bit
HP Integrity rx3600 Server
Dell PowerEdge 6850

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