CN2699607Y

CN2699607Y - Whole digital dispatch interface and digital dispatch telephone in dispatch communication system

Info

Publication number: CN2699607Y
Application number: CN 200420031446
Authority: CN
Inventors: 武仁革; 王劲
Original assignee: 武仁革
Current assignee: Anshan Xuntong Information Network Co., Ltd.
Priority date: 2004-05-07
Filing date: 2004-05-07
Publication date: 2005-05-11
Anticipated expiration: 2014-05-07

Abstract

The utility model relates to advanced ISDN digital technique in the dispatch communication system equipment, which comprises a whole digital customer interface equipped at the host machine end and a digital dispatch telephone equipped at the far end. A pair of pair cables is connected between the dispatch telephones at the host machine end and the far end. A master control board MCU is connected with a switched network through a data bus and an address bus; the switched network is connected with an HDLC controller 2 through a PCM bus, 8 paths whole digital dispatch interfaces and an HDLC controller 1; the HDLC controller 1 is connected with a system main control module; the master control board MCU is connected with the HDLC controller 1 and the HDLC controller 2 through the data bus. The ISDN function is added to the whole digital program control dispatch exchanger on the basis of the original dispatch exchanger. The digital dispatch telephone has the following functions: caller identification function can be shown in Chinese language; the telephone number, name, time and date of the other party are displayed; simple left word can be realized with Chinese language short information function; with single key dial-on, the other party can be called by pressing the function key.

Description

Digital dispatch interface in the dispatching communication system and digital dispatching phone

Technical field

The utility model is that advanced ISDN digital technology is applied in the dispatching communication system equipment, this The Application of Technology can greatly improve the adaptability of dispatching patcher and can increase analogue system the function that can't finish, and can satisfy the instructions for use of any enterprises and institutions, be mainly used in all conglomeraties such as iron and steel, mine, oil, electric power, water conservancy, army.

Background technology

In traditional telephone network, realized the digitlization of network internal, but the user to still adopting analogue transmission between the telephone office, be easy to since the accumulation of noise on the way cause distortion.And, realized the digitlization of subscribers feeder for ISDN, and numeral connection end to end is provided, transmission quality improves greatly.Because ISDN has realized that numeral connects end to end, it can support to comprise miscellaneous services such as voice, data, image.Along with electronic communication constantly enlarges in the whole world, we many people need and user's exchange message of different regions.And people have been not only simple sound exchange to the requirement of communication now, also need to share the different information of various forms.For example, some people needs high-speed data and file transfer; Some people may need multimedia and video conferencing; Some people then wishes to visit central database.So, advanced person's ISDN digital technology is applied in the dispatching communication system equipment, will be the technological break-through of dispatching communication system.

Relevant technical term introduction:

1、ISDN

ISDN (Intergrated Service Digital Network) is the abbreviation of integrated services digital network, and in digital dispatching patcher, we are called digital dispatch interface.ISDN is the combination of numeral exchange and Digital Transmission, it with rapidly, accurately, economy, effective and efficient manner provides existing business in the present various communication network, and will communicate by letter and data processing combines, and started a lot of unprecedented new business.ISDN is a digital network, no matter can convert digital signal to as long as primary signal is voice, literal, data or image, can both transmit in isdn network.The fundamental characteristics of ISDN is the network interface of going into that standard is provided to the user, and the user can be optionally combines the terminal of different service types, is connected on the same interface, and can changes terminal type at any time.

ISDN mainly contains two types: basic rate (BRI) and primary rate (PRI).Telecommunication bureau is bri interface to what domestic consumer provided, adopts original twisted-pair feeder, and speed can reach 144Kb/s, and our system adopts the 2B+D standard interface of this ISDN.BRIISDN can provide two B passages (each 64K) and a D passage (16K) on a pair of twisted-pair feeder, the D passage is used for command transmitting, and the B passage then is used for transporting speech, data etc.No. one phone only takies a B passage, therefore, carries out multiple business or dialogue at the same time.The PRI interface rate is 2.048Mb/s, need to be used to the application of transferring large number of data, and is interconnected etc. as PBX, LAN.

2、2B+D

The support passage of B passage: ISDN provides the 64kbps bandwidth to transmit voice or data information.

The control signal passage of D passage: ISDN, transmission sideband signal between isdn network side and user side, this passage also can be used for transmitting X.25 data, but switch is wanted this service can be provided.

Basic rate interface (BRI): the standard at a definition ISDN interface, generally comprise a D passage and two B passages, be commonly referred to as 2B+D.The general speed of the 2B that just is meant of the speed of our " Integrated Service Digital Network " 128k of saying.Its circuit is the same with ordinary telephone wiring, uses a pair of traditional copper two core cable line.A BRI is made up of two kinds of dissimilar communication channels: two B-Channel are with the rate transmissioning data of every channel 64kbps (or bundle with the speed of 128kbps use two channels); The control channel D-Channel of a 16kbps is used for transmitting signal (as setting up or cut off conversation, transfer control signal).On a BRI circuit, can connect 8 different isdn devices (as phone, fax) simultaneously, and distinct device can distinguish by distributing different sub-numbers, automatically connect corresponding apparatus by D-Channel when externally phone enters.Only allowing two equipment at present on a BRI circuit uses simultaneously.

A B-Channel channel similarly is one " pipeline ", and two B-Channel channels can be bundled in together with very fast speed file in download.When external call entered, the file that then can temporarily stop one of them channel was downloaded, and gave new call request and did not need to stop whole downloading process, can select to recover to download behind new call request sign off.This communication process is to be controlled by another D-Channel that separates fully.

The D-Channel communication of ISDN is mainly used in transmission of control signals, as setting up and stopping communicating by letter of B-Channel, checks whether available B-Channel is arranged, and some useful user profile (as the other side's telephone number) are provided.D-Channel uses the packet switch connected mode, this makes it be highly suitable for intermittent transfer of data, the feasible required time that connects of this transmission means of while shortens greatly (generally has only 2-3 second, and common modem protocol shake hands may need for 30 seconds), the transmission rate of D-Channel is 16kbps (basic rate ISDN) or 64kbps (primary rate ISDN).

Summary of the invention

Digital dispatch interface in the dispatching communication system and digital dispatching phone, it is characterized in that: the utility model is made up of the digital user board of host side and the digital dispatching phone of far-end, is connected by a pair of pair cable between the dispatching telephone of host side and far-end;

The structure of digital user board is: control board MCU is connected switching network by data/address bus with address bus by the center, switching network is connected with hdlc controller 2 with 8 tunnel digital dispatch interfaces and hdlc controller 1 by pcm bus, hdlc controller 1 is connected with main system control module, digital dispatch interface is connected with clock generator, and center control board MCU connects hdlc controller 1 and hdlc controller 2 (referring to Fig. 1) by data/address bus;

The structure of digital dispatching phone is: the control board MCU1 of digital dispatching call center connects digital dispatch interface, digital telephone interface and LCD, digital dispatch interface is connected with the digital telephone interface, the digital telephone interface is connected with dispatching telephone, and hdlc controller 3 is connected (referring to Fig. 2) with the digital telephone interface.

Every block of plate of digital dispatch interface plate of host side has 8 way word interfaces, and main frame can connect 48 blocks of digital dispatch interface plates at most, can connect 384 way tone of Chinese characters degree phones at most.

The beneficial effects of the utility model are: digital program control scheduling switch is to have increased the ISDN function on the basis of original scheduling switch, so the basic function of digital dispatcher comprises the function and the ISDN function of original telephone user exchange, mainly comprises following content: the circuit-switching function of finishing 64kbit/s; The interface of ISDN is provided; Business function; The signaling translation function; Original switch function.

In common dispatching patcher, generally adopt common phone just can reach needed corresponding function, it is just passable briefly can to converse exactly.In this patented technology, the accessible following function of digital dispatching phone: Chinese incoming call display function can show the other side's telephone number, title, time and date; Chinese short message breath function can realize simple message; Singly-bound is put through, just can call peer by a function key.

The user interface of digital scheduling switch has kept the subscriber phone of scheduling switch, and changes analogue voice signal into digital signal in subscriber line circuit, promptly adopts the digital dispatch interface of ISDN.Digital program control scheduling switch ordinary numbers stored-program control exchange is user's digital interface at the difference of user interface, and it can provide the user of basic rate isdn 2B+D to insert, and also can provide the user of ISDN primary rate 30B+D to insert.The former is two line interfaces, and the subscribers feeder that uses with analog telephone is identical; The latter is a four-wire interface, adopts the PCM transmission line.In addition, the standardization user access network interface of the expansion ISDN business of International Telecommunication Association's definition is called the V5 interface.It for analog subscriber, rent individual line subscriber and the isdn user provides standardized unified interface, speed expands to 16 2048kbit/s from a 2048kbit/s.

Description of drawings

Fig. 1 is the structure chart of digital dispatch interface plate.

Fig. 2 is the structure chart of digital dispatching phone.

Fig. 3 is the connection diagram of main frame and dispatching telephone.

Embodiment

The utility model is made up of the digital user board of host side and the digital dispatching phone of far-end, is connected by a pair of pair cable between the dispatching telephone of host side and far-end.

See Fig. 1, MCU is the control centre of digital dispatch interface plate, and there is Single Chip Microcomputer (SCM) program inside.

Switching network is based on the time-division communication system of pulse code modulation PCM, can finish digital communication and voice call between dispatching telephone by switching network, also can be hdlc controller control passage is provided.

Hdlc controller is the transceiver of a kind of HDLC of providing (communication of high-speed figure link) Communications service, can finish the digital communication of two ends based on the HDLC agreement by hdlc controller.

Digital dispatch interface is to be used for producing the 2B+D signal that meets isdn standard, and by the digital-analog conversion in the interface digital isdn signal is dealt on the analog line, the conversion of signals on the analog line is being become digital signal in system, transmit and handle.

See Fig. 2, Fig. 3, the digital dispatching phone is a dispatch terminal, but Field Force's operand word dispatching telephone is called out other dispatch terminals, finishes individual calling, group calling, inserts and function such as exhale, and also can accept the calling of other end office (EO)s.

The digital dispatching phone is made up of MCU1, digital telephone interface, digital dispatch interface, hdlc controller 3 and LCD.

Wherein MCU1 is the control centre of digital subset, carries out single-chip microcomputer by MCU1 and instructs all functions of finishing dispatching telephone.

The digital telephone interface is used for finishing and converts digital speech information to analog voice signal, and the analog voice signal of input is converted to digital signal and transmits.

Hdlc controller is the transceiver of a kind of HDLC of providing (communication of high-speed figure link) Communications service, can finish the digital communication of two ends based on the HDLC agreement by hdlc controller.Be used for communication with main frame isdn interface plate.

LCDs is used for showing various operation informations.

Claims

1, digital dispatch interface in the dispatching communication system and digital dispatching phone, it is characterized in that: the utility model is made up of the digital user board of host side and the digital dispatching phone of far-end, is connected by a pair of pair cable between the digital dispatching phone of host side and far-end;

The structure of digital user board is: control board MCU is connected switching network by data/address bus with address bus by the center, switching network is connected with hdlc controller 2 with 8 tunnel digital dispatch interfaces and hdlc controller 1 by pcm bus, hdlc controller 1 is connected with main system control module, digital dispatch interface is connected with clock generator, and center control board MCU connects hdlc controller 1 and hdlc controller 2 by data/address bus;

The structure of digital dispatching phone is: the control board MCU1 of digital dispatching call center connects digital dispatch interface, digital telephone interface and LCD, digital dispatch interface links to each other with the digital telephone interface, the digital telephone interface is connected with dispatching telephone, and hdlc controller 3 is connected with the digital telephone interface.

2, digital dispatch interface and the digital dispatching phone in the dispatching communication according to claim 1 system, it is characterized in that: every block of plate of digital dispatch interface plate of host side has 8 way word interfaces, main frame can connect 48 blocks of digital dispatch interface plates at most, can connect 384 way tone of Chinese characters degree phones at most.