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IP Dispatch System in Steelmaking Plant

IP Dispatch System in Steelmaking Plant
IP Dispatch System in Steelmaking Plant

I. Overview
The production scheduling communication system is composed of a professional production scheduling communication system, and at the same time, a certain margin is reserved for future system expansion. In this system, special telephones such as dispatch telephones and sound reinforcement telephones are set up in the general office building, sintering plant, iron plant, steel plant, high-line and other areas. Provide effective, reliable, and rapid communication methods for dispatch and command, facility maintenance, and logistical services.
The system adopts NGN architecture design. The relay communication service is implemented based on the IP network. Through the IP network, services such as multi-service integration, cross-platform communication, scheduling, and remote communication are implemented, which greatly improves the scheduling efficiency of the system. The scheduling system supports multiple scheduling functions, such as Voice services such as click-to-call, multiple conferences, broadcast, forced insertion, forced release, short message, and intercom; support unified numbering scheme across the network. The IP dispatch communication system of iron and steel enterprises can realize the voice call recording function for all terminals in the system. Recording is realized by IP, without complicated wiring. The recording server only needs to access the IP network to realize recording on all local and remote terminals. The recording file is stored on the recording server, which can realize the recording, storage, transcoding, playback, retrieval and other operations of the recording file.
The system supports common protocols such as SIP and H.323 protocols; has a wide range of compatibility and seamlessly interconnects with existing public networks such as PSTN / PLMN / IMS, including Huawei, ZTE, alcatel-lucent, Ericsson, Nokia Siemens Networks and other switching equipment. It flexibly implements interconnection and communication with various private network communication equipment, and the open interface facilitates access to third-party services.
Network topology diagram

System functions
2.1 Call function
(1) Outgoing function
Business Type Business Introduction
Click to call The dispatcher can click any dispatching extension on the dispatching platform to call the extension.
Group call The dispatcher selects any dispatching group on the dispatching platform and presses the "group call" key to call all dispatching extensions in the group. The group call includes simplex group call and duplex group call: duplex group call, a full interactive call between an outgoing extension and the dispatcher; simplex group call, an outgoing extension can only listen, not speak, Only the dispatcher can speak. Group calls also include serial group calls and parallel group calls: serial group calls, one by one, to identify the participants; parallel group calls, all calls to the conference site at one time.
Multiple Group Calls Dispatchers can call multiple extensions simultaneously. The groups do not interfere with each other.
Free call The dispatcher can call any phone in the network through the dial pad, or call outside the network.
Automatically redialing a busy outside line number When a phone call fails and the reason for the failure is busy, it will prompt you to automatically redial, and you can change the number and interval of redials.
Disconnecting Dispatchers can disconnect an extension, an extension, or all extensions.
Forced Dismantling Dispatchers can barge into a call and forcibly remove the call.
(2) Inbound function
Business Type Business Introduction
Incoming call access The dispatcher can connect to any incoming call and talk independently.
Individual call The dispatcher can choose to talk to any dispatching extension independently without affecting the calls of other people in the dispatching site.
Caller ID shows the extension number for incoming calls within the group, and the user number for incoming calls outside the group.
Incoming call alert Dispatching extension or any other phone dials into the dispatching console, there are audible and visual prompts: If the dispatcher's phone is idle, the phone rings and the dispatcher can pick up the phone; if the dispatcher's phone is busy, the dispatching desk will have Incoming call alert tone, the login interface of the dispatch console will display the information of the incoming call and display the ringing status.
Call waiting Dispatching extensions or any other incoming calls. If the dispatcher has no time to handle the incoming calls, they will enter the waiting queue and hear music, and emergency calls have the priority to receive calls.
Disconnecting Dispatchers can disconnect an extension, an extension, or all extensions.
Call forwarding The dispatcher can forward incoming calls to a member or join a conference.
Permission definition You can define any phone as a dispatch phone.
Joining the Dispatcher, The dispatcher can connect the dispatching extension that is scheduling the call to the dispatching site and have a full interactive call with other people in the site. Incoming calls in the waiting queue can also be directly connected to the conference site. It is also possible to connect one or some dispatching extensions from one dispatching branch to another.
Status monitoring The dispatcher can monitor the current status of each dispatching extension, such as: idle, busy call, ringing, answering the call, waiting for an incoming call, or being in a call. Various statuses are displayed on the dispatching table in different color scales.
Extension display On the dispatching console, the display mode of each dispatching extension can be select-ed, such as the extension's number, department name, and name.
Call log All dispatch calls and dispatch extension dial-in made by the dispatcher are recorded. Including start and end time, phone number, etc.
Call Hold Select the phone in the call and click Call Hold.

2.2 System administrator functions
Function Description
Dispatcher management Query, add, modify, and delete dispatchers.
Group management Query, add, modify, delete scheduling groups and other groups.
User management Query, add, modify, and delete common members.
Call management You can query the recording during a call by calling and called number, start and end time, and duration. You can delete the record on the local or recording server, and you can download and audition the recording record.
Conference management You can query the recording during the meeting by querying the conference name, start and end time, and duration. You can delete the recording on the local or recording server, and download and audition the recording.
Log in and log out records can be queried by dispatcher, registration type, start and end time, and server records can be deleted.
Other managements include call on duty, exit password, audition number, call recording, conference recording, etc.

2.3 Dispatcher function
Function Description
Group management Query, add, modify, and delete other groups.
User management Query, add, modify, and delete common members.
Recording management, You can record the voice, audition the recorded voice, and query the recording records based on the summary. You can set the voice as the default file. You do not need to select the voice when you call the group call later. You can directly call the group. When you want to broadcast a voice at the site, select a voice first, and click the site broadcast to play the voice.
Private phone book management You can query, add, and delete private phone numbers on the server.
Other configurations include settings for call mode, group call mode, join conference status, click mode, site broadcast, redial, etc.

2.4 Conference function
The scheduling center can hold multiple conference calls through the conference resource server to implement the multi-party call function, and can call in contacts at any time to implement the conference call function, maintaining the scalability of the function. A single server supports 32-way conference calls, and more user capacity can be obtained through server cascading to meet customer demand for large-capacity conferences. Each division can realize cross-region communication through SIP trunk.

2.5 Recording function
The steel company's IP dispatch communication system provides recording resources required by the system through a recording server. Through personalized settings, the call can be recorded fully automatically or manually, and can realize the network storage of voice data. It can cooperate with the dispatcher to implement call recording, recording playback and other functions. The dispatching center recording server can support up to 30 concurrent recordings. The PC can be used as a maintenance desk to maintain, configure, and manage the entire system to achieve unified network management and remote network management functions.

Fourth, the main equipment description
4.1 Scheduling Communication Server
The dispatch communication server is a soft switching platform and has a switch function. With independent networking capabilities, it can also network with other standard telecommunication equipment. Support IP phone equipment direct access, at the same time support analog user gateway, relay gateway, four-line E & M gateway, audio gateway, wireless intercom gateway and other access. It can support integrated access of analog phones, IP phones, conference terminals, wired intercom terminals, broadcasting equipment, audio equipment, trunking equipment, etc.
The dispatch communication server equipment is based on the NGN architecture; it implements soft switching, business resource applications, dispatch business applications, and supports hierarchical dispatch of multiple dispatch stations. In terms of functions, it can implement user management functions, telephone exchange functions, dispatch functions, recording functions, etc. Can smoothly expand capacity without interrupting existing services, without affecting the realization of business functions. Non-blocking exchange. High integration, providing rich excuses and strong networking capabilities, with high reliability and availability. BHCC value ≥250,000 .

4.2 Digital Relay Gateway
Digital trunk gateway This project requires that a single device supports no less than one E1 access, providing a maximum of eight E1, and supports access to the ISDN PRI trunk interface. Supports No. 7 signaling, Q.931 PRI signaling. Linear coding HDB3 linear rate. Configure ISDN PRI interface. Support Q.931 PRI signaling. Standard is ITU-T G. 703 G. 704 & G. 823 support QOS echo suppression G.165 / G168-2000), Voice Priority Marking (TOS) , Supports DIFFSERV, dynamic buffer (JITTER BUFFER), comfortable background noise generation (CNG), voice detective (VAD), E1 interface, 2 channels; signaling, NO7 or Q.931 PRI; other interfaces, 1 power interface, 1RJ45 10/100 network interface; power supply, rated voltage 220V, fluctuation ± 5%, frequency 50HZ ± 5%, line voltage waveform distortion rate <5%. Ethernet interface, 10 / 100M adaptive; Voice processing: Voice coding: G.711, G.723, G.729; Fax: T30, T38; Call connect rate:> 99%; System can run for a long time Availability> = 99.999%; system trouble-free working time: <15 minutes; network management and alarm: support WEB network management, Chinese and English language support. Monitor the status of various modules. Support number data, dial plan, relay route data backup, restore. Network configuration or local serial port configuration.
Protocol support: SIP, DHCP, 2.0, TFTP, FTP, SNMP, TELNET, HTTP, IEEE802.1Q, IEEE802.1X

4.3 Simulated user access gateway
Analog user access gateway to achieve analog extension access
64 FXS access
Gateway configuration mode: WEB-based user interface, text mode, centralized network management
Remote gateway management: HTTP / WEB mode, remote configuration, remote software upgrade, fault alarm, statistical information.
VoIP protocol SIP (RFC3261 and related extensions)
Network protocols PPPoE, DHCP, DNS, NAT / STUN, 802.1P, TFTP, Telnet, etc.
System can run for a long time, availability> = 99.999%
System trouble-free working time> 20 years
System failure recovery time <15 minutes
Power supply mode: DC: 48V or AC: 220V

4.4 Digital Recording Server
It can realize voice recording, storage, query, playback and other functions.
The recording function is divided into call recording and conference recording.
Call recording refers to the recording of all calls through the dispatching console, including all incoming calls, outgoing calls, and transfers.
Site recording refers to the entire recording of the scheduled conference site.
Recording supports two recording modes: automatic recording and manual recording. The conference and call are recorded. The recording files are stored on the recording server.
Recording of scheduled calls can be queried by calling and called numbers, start and end time, and duration
For the recording of the scheduled conference site, you can query by the conference name, start and end time, and duration
Records can be deleted on the local or recording server, and recording records can be downloaded and auditioned
The query method can be queried through the local server and the network.
There are various query conditions. You can query based on the calling number, called number, time, and duration.

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