General

This JSYZ-2000 digital programmable dispatching machine is one new generation of
communication system developed by using the advanced numerical communication technology,
integrating the advantages of many domestic digital programmable dispatching machine.
The digital programmable dispatching machine, is strictly in accordance with the
requirements of automatic dispatching machine given by the Ministry of Information
Industry of P.R.C and Power Ministry. It has the advantages of higher stability and
reliability, widely used for the organs and enterprise including army, railway,
highway, bank, irrigation works, electric power, mine, oil, metallurgy,
chemical and aviation etc. 
Characters 

● Integrated with the subset, terminal and tandem switch and suitable for the
   connection equipments of communication, unit and the corporation’s public network. 
● Have many kinds of relay interfaces such as Z, S/T, U, E1, E & M etc.
● E1 relay has China NO.1, 7, R2 and ISDN（PRI）signaling.
● Has warm backup host control system with seamless connection,
   secondary power source and sound source system.
● Various breadboard can have electric plug and socket, and make
   the daily maintenance works more convenience.
● Humanization speech mailbox can issue various sounds and guide
   the user according to telephone operation course
. 
● Self-troubleshooting system, can online-diagnoses various troubles,
   and the diagnosis precision is that a certain part. Relay diagnoses
   guarantee that any relay (ring circuit/2M) can normally work.
   The scheduling switchboard can switch on or off the peripheral
   circuit according to the diagnosing result.
   The extension self-troubleshooting function can distinguish
   the troubles of turnoff or short of the extension side according to the actual situation. 
● Has the calling recognition function of Caller and ID,
   calling number display from the in- and out-house lines,
   compatible of ring circuit relay DTMF and FSK system,
   calling number display controlled by the signal from E1 relay. 
● Real time control charge-computing system.
   If the pre-payment is deducted to be zero, the scheduling switchboard will
   cut the call against the extension or account overspend.
● Has signaling system for infinitude number sender without the difference
   of first and second dialing, the user can redial the number discretionarily. 
● Has the system of record and message, to do the host and guest message,
   message recall or calling, as well as special long-time call record.
● Provide two interfaces of attendant desk and dispatching desk.
   The use of multiple telephone traffic function key-press makes
   the telephonist do operation easier. The dispatching desk has
   the functions of in- and out-home line conference call,
   clustering call, group call, one-key call  and lifting call (hot line) etc. 
● Has the functions of IP telephone，IP supermarket (public telephone.
   IP outgoing can share multiple outgoing way, multiple IP Prefix,
   single IP Prefix password etc. of the complete machine.
● Has the function of tandem office machine. It can carry out the tandem
   of interface to interface and ring circuit to ring circuit
   (e.g. into the ring circuit ---- out the ring circuit).
● Has the functions of multi-PC terminal maintenance and control.
   The user can carry out the operations through LAN such as
   terminal maintenance and call fee inquiry etc, or can carry out the
   long-distance maintenance and call fee inquiry etc through INTERNET. 
● Provide the ring circuit external line multi-number continuous selecting relay.
   The user can escape the application for continuous selecting input relay line
   and multi-relay single-number incoming. 
● Has the function of warning station operation treatment.
● Has the convenient and complete call fee administrative software operation system.
   Easy to extend the capacity and group the network through the interface.
   System composing
● Host dispatching machine: which can realize all
   call、exchanging、dispatching、organizing function
● Dispatching desk: which is the flat of operating. The operator can see all
   the status of all users through dispatching desk
● Ultimate maintenance: which can control and maintain the host dispatching machine,
   such as, data management、storage、telephone meeting management and charge
● Digital recording system: which can record all telephone talk automatically.
   The recording   duration depends on the hard disk storage Functions 
● Intelligent fast vast dispatching function: The dispatching machine can not
   only call all the user of the inner communication network, but also call the
   user out of the inner communication network one time, such as distant
   telephone、mobile phone and international phone, realizing all user telephone meeting
● Complete telephone traffic function：Inside and outside switchover, forced insert and 
   dismantling, hasten hang-up, call exit, episode, monitoring,
   internal and external line preserving and holding, and diverting outside line message etc.

● Complete management system：hierarchical limit of internal and external line，
   external line qualified code, suburb and county limit, password limit, time limit,
   prepaid call fee real time control, internal and external line grouping,
   office number2 digits of ring circuit exterior line, office number of interface
   with heading of 0~9, 32 office numbers with 0 to 8 digits, IP office number with
   1 to 8 digits, LCL office number with 1 to 7 digits, flexible extension number with
   different digits from 1 to 6, secretary and manager telephone, extension continuous
   selecting call, accounts charging, extension cipher roam charging, internal line
   invertedcharging，exterior line inverted/ time-delay charging,
   internal/ external hot line, exterior line direct-dialing line,
   equal-digit outgoing call of office machine and exterior office machine etc. 

● Complete extension operation：Call diverting, call diversion on busy,
   incoming call fungible answer, call back on busy, calling ringing current division,
   extension timing/non-timing call, extension avoiding intrusion，extension baleful
   investigation, extension call fee enquiry, serial number, number and level enquiry
   of extension, extension recording phone, called warning tone and high decibel
   hasten hang-up tone of extension, and calling display of extension while called etc. 

● Safe guarantee measure：All internal and exterior lines have three level safety
   anti-lightning strike measures. The protectors such as self-diagnosing system and
   automatic recovery after exterior power interference etc. have been set in it.
   It has the strong environmental adaptability and self-checking function to check the
   telephone circuit trouble. The manufacturer can compile the program or come over the
   trouble for the user through the telephone network in different place. All parameters
   can enjoy the power off protection. The scheduling switchboard has the special
   secondary on-off power supply, and 48V accumulator interface. While the power
   supply of the city is normal, the machine will charge the accumulator, after
   the normal power supply is cut off, the accumulator will energize the machine,
   and the operations can switch over automatically.