Step 3: control the multimedia industry

The three steps of the softswitch numbering scheme control the multimedia industry. The application and placement of numbers by operators, the number structure of the bureau number, and the features of the numbering scheme are the focus of this article. E.164 numbers are allocated in three major schemes: Bureau number scheme, network number scheme, and mixed number scheme.

(1) number structure of the bureau number
◆ Use the Bureau number method. The number structure is the same as that of a common phone number, that is:
◆ Local number: "PQR (S) ABCD"
◆ Long-distance number: 0 + long-distance area code + local number

In this Softswitch numbering scheme, various terminals, whether mobile terminals, fixed terminals, or various IP terminals, are allocated corresponding bureau numbers, and the Bureau numbers are allocated by local networks. Different regions have different numbers and resources. Therefore, you can use numbers headed by "P" or "PQ.

(2) number application and placement by operators
◆ After the Bureau number scheme is adopted, each operator can apply for the corresponding Bureau number in the local number plan.
◆ Different regions are identified by long-distance area numbers, and different operators are identified by different bureau numbers.
◆ If a Softswitch number scheme needs to cover multiple cities, you need to apply for a number in multiple cities.
◆ Because the number of the Internet is used, it cannot be assigned to the carrier across regions.
◆ The range of the long-distance serial number area is the same as that of the existing long-distance serial number area.

(3) features of the numbering scheme

◆ Because bureau numbers are used, no additional number resources need to be allocated. However, for a 7-digit LAN with insufficient number resources, you must upgrade the LAN number.

◆ The user's terminal cannot be distinguished from the number. At the same time, because bureau numbers are all used, the mobile phone numbers will be different from the current number.

◆ It is difficult to identify whether the user is a user of the softswitch serial number solution network or a user of the traditional telephone network by using the Bureau number. Therefore, it is difficult to select routes. The local call must identify the local call number 3 ~ 4-digit {(PQR (S). For long-distance calls, 6 ~ 7-digit number {OXlX2X3PQR (S )}. In routing selection, the users of the softswitch are connected to the IP network. Therefore, when a user of the softswitch sends a call, the user can first go through the softswitch network, arrive at the receiving end, and then enter the target network. Generally, the inbound network is used.

When the user of the softswitch number scheme is called, if the user of another network calls, it should theoretically be directly connected to the softswitch network. However, to determine whether the user is a Softswitch user, you need to determine 6 ~ 7-digit number. If the IP address is a Softswitch IP address, it is sent to the peer softswitch network through the softswitch network.

If you cannot identify so many digits, you may encounter difficulties in selecting the softswitch network, and the ASN may be attached to the PSTN network. Only when the user arrives at the receiving end of the PSTN network can it be determined that the user belongs to the softswitch user and then is connected to the softswitch network.

Even multimedia users may experience a situation where the PSTN network reaches the softswitch number scheme, which is not suitable for the development of multimedia services. Therefore, according to the needs of multimedia business development, the use of local numbers in multimedia terminals is flawed.