SOC3100 multifunctional Key Telephone System (KTS) was designed according to .712, G.732 of ITU-T protocol. It integrates the virtues ofvarious KTS &advanced functions of PABX. Therefore, it is a commerce high capacity communication products which is pecial for business, enterprise and hotel etc. With advance, open and humanism design idea which make this KTS as a new leader in KTS field. System hardware configure with modularization, parts of an apparatus with SMT echnics, MOS with high reliability and programmable IC make it with features as small bulk, apability steady and installation easy etc. System has PC managefunction which can watching & managing every extension state. Furthermore, system has more than 70features as voice mail, follow-me, communication time limited, day & night model, music input, broadcast port, conversation phone, secretary service, transfer after no answer and one key transfer etc.This system is fit forwidely used in commercial office   ● LCD Show with Menu Type Menu type operating interface with two row word shows including Ext. Number, week, date , time , operating inform- ation, phone book etc.   ● Day & Night Model Switch System can switch day & night model with automatically or by hand. Furthermore, operator can set ifference parameters of call waiting and welcome voice etc.   ● Caller ID of Inner / Exterior Support FSK & DTMF dual caller ID model for key telephone or normal telephone.. Certainly, operator can set just inner or exterior or both have.   ● Multi-Level Outgoing Call Limited As Ext. outgoing call has 7 level limited so that system can limit Ext. call IDD, DDD, city call, service phone and inner call. Besides, system can limit incoming call to Ext.、   ● Programming Both on PC & Telephone Operator can programming system parameters and Ext. Class both on PC & normal telephone set.   ● Charging Management System with charging management software which supports bill searching, saving & deleting. Besides, system configure with many kinds of rate list which with discount day, time, rate. All of them are easy be printed out.   ● Mobile Password User input personal mobile password on any Ext. then call phone with different level. Mobile password also has 7 level.   ● Equipotential Calling System will identify called number is inner Ext. number or exteriornumber, no equest add zero ahead called number and without hearing second dial tone.   ● Manager & Secretary Function System will transfer all calls to secretary Ext. When call incoming to manager Ext.. And the secretary consult with manager whether answer this call or not. This will save time for manager.   ● Three Fraction Guide Voice System provides three fraction guide voice for incoming call. The caller of exterior will hear guide voice then dial Ext. number directly, or xchange dial other Ext. number when it busy or no answer.   ● Flexibility Program Number System supports 1 to 4 digits flexibility program number for fitting for room number & manage request.   ● Dual Voice Box System provides two channel guide voice for incoming call make trunk connecting quickly.   ● Music Source Background music is inside of system. Caller will hear waiting music when this call be transferred. Same time, system can access music source from outside and caller will hear it when be transferred.   ● Many Type Transfer Function System supports refuse transfer, call forward, transferred whenbusy and no answer transfer.   ● Conversation Call System provides conversation call function. Conversation begins at the caller picking up and end at the caller quit. All the actor can speak or quit at anytime. Conversation capacity is 5 Ext.   ● UPS Power Switch Inside System supports AC voltage with 200V～240V and provides UPS power switch for battery. Therefore, system will work well when connecting battery even power cut.     ● Virtual Central When trunk set virtual central function, this virtual central will transfer all incoming call from this trunk. And when virtual central is busy, central Ext. 8000. System supports 12 lines virtual central.   ● Deposit Management In order to adapt hotel & office building extension outgoing call charging request, system can set deposit management on extension. Outgoing call will be cut when deposit limited and it will be recovered automatically till deposit enough.   ● Selecting Background Music Item System hold 12 song which can be selected as background music.   ● Plus One Digit Ahead Inner Extension Number This function can avoid the shortage of some normal telephone can not show caller ID which is 4 digits or less.   ● Multi-Functions Charging Management Model System supports many kind charging management model. E.g. no charging, half discount charging, holiday charging and whole price charging.   ● Incoming Call Answer Type System support incoming call to extension directly or transferred by central (ext. 8000). Guide voice like “ Hello, this is Shenou company, please dial extension number or dial zero for operator”。   ● Wake Up Service Extension with wake up service function and it will ring when time arrival.   download           [2]     ● Instead Dialling IDD & DDD Higher level extension can instead dialling IDD & DDD for lower level extension which without right to call it.   ● Communicatioin Time Limited Administrator can limit extension communication time which will control some extension occupy network long time.   ● Call Hold User can hold call when key phone is using and operate other function. System support normal hold extension is max. 12 and special hold extension is max. 2. Normal hold can be picked-up on every key phone, but special hold just can be picked-up on original key phone.   ● Hold Recover Key phone can dial hold extension DSS key or trunk CO key to recover communication.   ● Inner & Exterior Call Transferred Extension & CO incoming call can be transferred to third extension.   ● Call Waiting The third caller hear ring back tone when the called use key phone which is busy. Same time, the called hear waiting remind voice show there is a third part want to call him.   ● Broadcast Call System provides one MIC port which is connect with powered sounder. All extension can have broadcast call after inputting command code on extension.