How to Choose a Time Server for Best Value
In the previous section, we introduced the basics of Time Servers (you can read more here). In this section, we will discuss how to choose a Time Server that best fits each organization’s operational needs, ensuring that the investment delivers maximum value.
When considering Time Servers in the market, you will find a variety of options. Some models support only the NTP protocol, while others also support PTP. In terms of time sources, some devices rely on internal frequency references, while others synchronize via satellite signals. Therefore, selecting the right Time Server requires considering the following factors:
Required level of accuracy Some applications only require NTP protocol, which is sufficient for general use. However, if nanosecond-level precision is needed, a Time Server that supports PTP should be considered.
Existing network infrastructure In addition to accuracy requirements, it is important to consider the organization’s existing network equipment. For example, if time needs to be distributed to end devices using the PTP protocol, and those devices are connected through a network switch rather than directly to the Time Server, the switch must also support PTP. If the existing network switches do not support PTP, there may be no need to invest in a Time Server with PTP capability, which is typically more expensive than NTP-only models.
Number of end devices requiring synchronization Since both NTP and PTP use UDP-based communication, each time synchronization request from a client device may involve sending more than one packet (as a single packet may not always receive a response). Therefore, if there are a large number of client devices generating requests beyond the Time Server’s capacity, it may lead to performance issues, potentially preventing the server from distributing time accurately and causing further system impacts.
Building and installation environment
Time Servers can reference time either from internal frequency sources or from satellite signals. If a satellite-based system is chosen, a receiver must be installed—typically on a building’s rooftop to ensure clear visibility for satellite communication. For higher accuracy, the receiver should connect to at least 3–4 satellites. However, rooftop installation may not always be feasible due to certain constraints, such as avoiding proximity to lightning rods or limitations on cable length between the Time Server and the receiver. Therefore, installation should be carried out by experienced professionals to ensure the most suitable solution for the specific environment.
As demonstrated, there are many factors to consider when selecting and deploying a Time Server to ensure both suitability and cost-effectiveness. It is also important to choose products from providers with expertise in installation and network system management, as improper topology design may impact other devices within the system. These considerations will be further discussed in the next article.
If you are interested in Time Server solutions, we are ready to provide consultation and nationwide installation services. With over 18 years of experience as a distributor of Time Server systems under the TimeNX brand from the United States (more product details can be found at this link), we have been trusted by numerous organizations, including government agencies, state enterprises, financial institutions, and industrial sectors. For inquiries, please call 02-210-0969 or visit our contact page here.
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