A call prefix is a prefix of a called number. It refers to one digit or several sequential digits starting from the first digit of the called number. It can also be equal to the entire called number. In other words, a call prefix is a subset of the called number.
The MSOFTX3000 matches a called number with a call prefix by following the maximum match method. That is, the MSOFTX3000 searches a list of call prefixes for the call prefix that best matches the called number. Based on the matched call prefix, the MSOFTX3000 checks a data table for call attributes such as service category and route selection name. For example, among the call prefixes 139, 138, 13900278, and 6139, the MSOFTX3000 automatically selects the call prefix 13900278 as the best match for the called number 13900278310.
Dialed Number Set
Dialed number (DN) set is a collection of number initials or prefixes.The DN set is directly associated with call prefixes. It is first used for differentiated analysis on the same call prefix, and with the passage of time it is steadily recognized as a flexible means of call prefix analysis. One call source maps only one DN set, but one DN set can be shared by multiple call sources. Thus, the concept of DN set is greater than call source. You can configure the same DN set for different call sources, and you do not need to configure multiple data records for different call sources. This reduces the amount of data greatly.
A prefix is a key factor that determines various services related to a call. Different subscribers or trunk groups may share one prefix, but the calls sharing the same call prefix may be processed in different ways.
