Describes the types and functions of switches for programmable users.

User-controlled switches are quite common. So I studied the types and functions of these switches and shared them here, hoping to be useful to you. A user-controlled switch is a dedicated switch for internal telephone exchanges between industrial and mining enterprises and other organizations. Its basic function is to complete mutual calls between users within the Organization, however, there are also incoming and outgoing trunk lines that can be connected to the Intranet of the public telephone network and user calls in the network (including municipal calls, domestic long-distance calls, and international long calls ).

Because this type of switch is dedicated internally, you can add a number of additional performance based on the user needs to provide convenience for applications. Therefore, such vswitches have greater mobility. The user-controlled switch is a main component of the local telephone network and a complementary equipment of the local telephone switch. Because it undertakes a large number of calls between internal users of the local telephone network, reduces the traffic load of the local telephone network. In addition, the user-controlled switch is set closer to the user in the evacuation settings of various units, thus shortening the user line interval and saving the user cable. At the same time, a small number of inbound and outbound trunk lines are used to access the local telephone network, which plays a role in traffic centralization. From these aspects, the use of user-controlled switches has a great economic significance, the type and function of the User-controlled switches. Therefore, in public network construction, the function of user-controlled switches cannot be lacking.

The Skill Development Trend of user-controlled switches is to adopt a program-controlled user-controlled switch. A new program-controlled digital user-controlled switch can not only exchange telephone services, but also exchange data and other non-phone services, achieve comprehensive exchange and transmission of multiple services. The conditions for establishing an integrated business Digital Network (ISDN) for all units are invented. You can connect to an ISDN User. SOPHO is the first comprehensive information switch in the world that can handle ISDN services. It is a telephone switch. Whether it is an interface or a signaling method provided, it fully complies with the specifications of ISDN. We can firmly believe that in the future, the programmable digital user switches in the ISDN network will play a huge role.

Type of programmable user switches

There are many types of programmable user switches, which are divided into two types: programmable user switches and programmable digital user switches. The former is used to exchange Analog voice signals and belongs to the scope of analog switching. The latter exchanges PCM Digital Voice Signals and is a type of digital switch.

The classification can be divided into two categories: Universal programmable user switches and dedicated programmable user switches. General-purpose applications are applicable to general enterprises, public institutions, factories, authorities, schools, and other units dominated by voice services. Generally, the capacity is below several hundred, and its internal traffic accounts for a large proportion. Generally, it accounts for about 70% of the total traffic. Currently, the programmable Air Separation user switches with less than 200 doors produced in China are of this type. their special features are simple system structure, small size, convenient use, low price, and less protection. The dedicated type is applicable to different units and provides various special functions according to the special needs of each unit. Beijing Group calls. The following describes several dedicated programmable user switches:

I. Hotel type

The hotel-type programmable User Switch has a large number of incoming and outgoing calls and does not need to be directly transferred to the DID function. Therefore, the telephone platform has a strong function. To meet the needs of long-distance calls, you must have the PAMA (Private Automatic Message Accounting) billing function. To meet the hotel room management software requirements, the following functions are provided:

1). Room control: the customer's outgoing checkout phone is locked.
2). Message Center: provides message service for calls to guests who are temporarily away from Alibaba Cloud.
3) Room Conditions: whether the room is occupied, idle, and cleaned at any time.
4). Automatic wake-up: Wake up the guests on time as needed.
5). Do Not Disturb: provide a quiet environment for the guests. After the guests enter instructions by phone, no call is allowed, but the time limit is exceeded.
6). Integrated voice and data system: enables business office staff to obtain major trade information and materials from distant computers or databases through personal computers.

Ii. Hospital Type:

This is a dedicated Programmable switch with special hospital software. In addition to the hotel function, the software also provides call storage, call transfer, Ward urgent call, hotline, and mobile communication interface that works with ambulances.

Iii. Banking:

The bank-type special software includes communication between the head office and the branch, call answering, security line, and external line storage. It also has the office automation PABX function.

Iv. office automation: (OA)

1. Office staff need the most modern voice channel programmable communication machine to complete first-class voice communication requests. Fast and automatic direct dial for outgoing call requests, that is, the scale-down dialing function. Automatic incoming calls are required, that is, the Direct Inward Dialling function, to avoid the operator's participation and improve the effectiveness.

2. the computer at the desk should be integrated into the internal data resources and external databases of the program-controlled switch application. Future Control: Provides user-line digital transmission channels with a transmission rate of 144kb/s. That is, 2B + D (64 KB/s transmission of voice, 64 KB/s transmission of data, 16 kb/s transmission signaling ). It also transmits telegraph, fax, text and fixed images through asynchronous and synchronous adapter transmission methods. The advanced fourth-generation Programmable switch provides a 2 Mbit/s transmission path, as well as broadband non-phone services, Beijing Programmable switch, transmission of dynamic images and TV phones.

3. Provides the X.25 group exchange interface to improve the ability to connect to the public data network and group exchange network.

4. It has the functions of voice mail and email.

5. The program-controlled user communication machine in the office automation needs higher reliability, otherwise the impact will be very serious. Therefore, the necessary redundancy is the main. SOPHO collaborative open office automation system is an outstanding representative of this type of products, with advanced and perfect office automation functions.

V. Private Network:

The program-controlled switch for a program-controlled user with the network connection function should have multiple-digit number Storage and forwarding capabilities, direct access to the preferred route selection, automatic detour, external call level restrictions, and equal-bit dialing. The function is transparent, centralized remote protection and management, and centralized setup of telephone stations. The private network type Programmable switch should focus on considering its relay interface, the combination of the signaling method and the transmission system. The request may also have the function of receiving, long distance, or even cooperating with the agricultural business.
With the continuous improvement of skills and the increasing business needs of various organizations, more new models will be presented.