Any company at a certain point in its development is faced with the problem of choosing a PBX for an office. Usually people turn to specialists for help, but in order for the choice to be really correct and deliberate, it is necessary to know the basic principles of building such systems.
Instructions
Step 1
Before you start choosing a PBX, find out how many employees will use internal lines. Through the automatic telephone exchange, subscribers can receive calls from the city, switch calls to each other, communicate with each other, call the city and to mobile phones.
Step 2
Try to estimate the company's growth over the next few years and see how many people will be using PBX in three to four years. This is necessary in order to save money and use resources with maximum efficiency. Usually a 25% increase in the number of subscribers is foreseen. For example, if initially the system is designed for 12 employees, then the capacity of the station must be at least 16 internal lines.
Step 3
Count the number of internal lines - this way you can calculate the required number of city lines. It is generally accepted that for three internal subscribers one external one is enough. For example, if a PBX with 16 internal lines is selected, there must be at least six city lines.
Step 4
Knowing the number of internal and external lines, decide whether these lines will be analog, digital, or VoIP. In general, several digital phones are used, usually of a unique model, suitable only for a particular PBX. The rest of the extensions are usually made analog.
Step 5
Choose the optimal type of CO lines, considering the connectivity. For example, if the office often changes the address, it is inconvenient to use analog lines - the telecom operator will not be able to provide lines anywhere. In this case, the best option would be VoIP - a technology without location.
Step 6
Analyze the desired PBX functionality. Basic functions such as transfer, call forwarding, flexible distribution of incoming calls, groups of incoming calls and pickup groups are standard and provided on most modern PBXs. Non-standard features include the ability to build call centers using additional programs, call recording and tariffication.
