KR890001046Y1 - Key-telephone system - Google Patents

Abstract

No content.

Description

Emergency transmission and emergency call function and modem configuration circuit in key phone system

1 is a circuit diagram between a conventional system and a key set.

2 is a system and keyset circuit diagram according to the present invention.

* Explanation of symbols for main parts of the drawings

STM: Main system X ₁ -X ₂ , X ₁₁ -X ₁₄ : Crosspoint

T ₁ -T ₂ , T ₁₁ -T ₁₂ : currency path Y ₁ -Y ₂ : hybrid coil

MOD: Speaker Module MODEM: Modem

B ₁ -B ₄ : Buffer P ₀ -P ₁ , P ₁ -S ₁ , P _M-1 , S _M-1 : Port

K _i1 : Key set a ₁ -a ₄ : Analog switch

J ₀ -J _n-1 : jitter

The present invention relates to a multi-purpose service function in a key-telephone system. In particular, the present invention provides a handset or an emergency call or VOICE ANNOUNCEMENT without disturbing a key set in use. The present invention relates to an emergency transmission and emergency call function and a modem configuration circuit in a key phone system in which a modem can be connected to a key set when a speaker phone is not used.

In general, the keyphone system is used to share multiple keysets and modems to the main system to perform various purposes of the exchange function. Each keyset is installed in a remote and isolated room depending on the installation location. Among these functions, the console has been used to notify each set of keys by selecting the mode key of the main system in case of emergency or urgent notice in a certain area.

1 is a circuit diagram between a conventional main system and a key set. In FIG. 1, STM is a main system, J ₀ , J _n-1 is a junction, X ₁ -X ₂ is a cross point, TR ₁ , TR ₂ is TRANS, T ₁ , T ₂ is currency, K _l , K _{l + 1} is the key set, and in the conventional main system (STM) and the key set (K _i , K _{i + 1} ) Each microprocessor is built in. When pressing the target key, the crosspoints (X ₁ , X ₂ ) are driven by the other control bus, so that the jitter (J ₀ , J _n-1 ) and one communication path (T ₁ -T ₂ ) was to be occupied /

However, if any one of these keys (K _i or K _{i + 1} ) is in use, the corresponding call (T ₁ or T ₂ ) is occupied, there is a problem that you can not make an emergency call or emergency call, the emergency There was a defect that could not be transferred.

Therefore, an object of the present invention is to provide a circuit having an emergency call or emergency call function without interrupting a call even if the keyset in use is needed.

Another object of the present invention is to provide a circuit for transmitting data through a modem when not talking through a speakerphone or a handset.

Hereinafter, with reference to the drawings of the present invention will be described in detail.

2 is a circuit diagram according to the present invention, in which J ₀ , J _n-1 is a junction, X ₁₁ -X ₁₄ is a cross point, TR ₁₁ is a first trans, and TR ₁₂ is a second Trans, TR ₁₃ is the third trans, TR ₁₄ is the fourth trans, T ₁₁ is the first currency, T ₁₂ is the second currency, P ₁ , S ₁ is the main system (STM) Port, P _M-1 , S _M-1 are keyset ports for emergency calls, Y ₁ and Y ₂ are hybrid coils, a _{1-a 6} are analog switches, B _1- B ₄ Is buffer, MOD is speaker module, R _x , R _x ', R _{x x} is receiving terminal, T _x , T _x ', T _x ″ is transmitting terminal, i _M-1 is for emergency delivery Keyset connection, MODEM is the modem, the main system (STM) and the key set (K _i1 ) connection is the same as the first diagram and the speaker and microphone are connected to the first transmission and reception terminals (R _x , T _x ), the second transmission and reception terminal (R _x ', _x T') is connected to the handset, a third transmitting and receiving terminals _{(R x ", T x"} ) is connected to the modem (mODEM), a state machine (STM) The analog switches (a _{1-a 6} ) of the crosspoints (X ₁₁ -X ₁₄ ) and the _keysets (K _i1 ) are respectively installed microprocessors (hereinafter referred to as CPUs) of the main system (STM) and the _keysets (K _i1 ). ), The contact point is controlled through a separate control bus so that the call path is selected.

Thus phone calls is the primary system (STM) jeongteo (J ₀ -J _n-1) of one of the free (Free) jeongteo (J ₀ -J _n-1) is cross-point (X to be connected with the port (P ₁₎ in the ₁₁ ) Close the first call (T ₁₁ ) to connect the trunk line and the internal loop (Loop) is formed so that the handset second transmission and reception terminals (R _x ', T through the buffers B ₁ , B ₂ ) _The call is made through _x ').

When making an emergency or emergency call to the busy key set (K _i1 ), the emergency call key set (i _M-1 ) of the Calling Station is connected to the port (P _M-1 ) so that the CPU control signal is settled. Connect the cross point (X ₁₂ ) and the jitter (J ₀ ), which is a pre-jitter (J ₀ -J _n-1 ) of one of (J ₀ -J _n-1 ), and also the second of the keyset (K _i1 ). The CPU closes the crosspoint (X ₁₃ ) such that T ₁₂ connects the order (J ₀ ) to port (S ₁ ) again.

At this time, the emergency communication key set (i _M-1 ) of the call station is formed through the second call path (T ₁₂ ) with the key set (K _i1 ) so that it is possible to transmit the emergency matters and make an emergency call. Lose.

That is, the crosspoints (X ₁₁ -X ₁₄ ) and the analog switches (a _{1-a 4} ) are controlled by the CPU by the user's operation. _M-1 ), port (P _M-1 ), jitter (J ₀ ), port (S ₁ ), second channel (T ₁₂ ), hybrid coil (Y ₂ ), module (MOD), speaker and microphone without going through the first transmitting and receiving terminals (R _x, T _x) the handset is being used since the network configuration is a first transmitting and receiving terminals (R _x ', _x T') through the speakerphone is run through the module (M OD). Therefore, the emergency call or urgent response is transmitted through the buffers B ₃ and B ₄ to the transmitting (T _x ) and receiving (R _x ) ends without interrupting the call proceeding by occupying the first call path (T ₁₁ ). can do. Here, the speaker module (MOD) is a circuit having a speakerphone function, and the hybrid coils (Y ₁ , Y ₂ ) are hybrid circuits that are 2-To-4 converters.

A main system (STM) and key sets the first and second call between _{(K i1) (T 11,} T 12) when the second call (T ₁₂₎ is not used as emergency information or emergency call function in the modem (MODEM ) It is used as a path, which connects the modem to the modem third transmitter / receiver (R _x ″, T _x ″) of the key set K _i1 and connects the other station to the station on the cassette K _i1 . Call the handset terminals (R _x ', T _x '), hybrid coil (Y ₁ ), first channel (T ₁₁ ), port (P ₁ ), jitter (J ₀ -J _n-1 The terminal is connected to one of the jitters (J _n-1 ) to make a call with the called station, and the modem data transmission is performed by the CPU when the analog switch (a ₄ ) is pressed by pressing the modem key in the key set (K _i1 ). The modem (MODEM) is connected to the second call (T ₁₂ ), the port (S ₁ ), in which the jitter (J _n-1 ) _where the called station of the other party is connected, the port (S ₀ ) is a cross-pointer (X). ₁₄ ) of the keyset (K _i1 ) Since the port P ₁ connected to the first passage T ₁₁ is connected by a crosspoint X ₁₁ with the jitter J _n-1 , the CPU opens it to separate the first passage T ₁₁ . The second call to key set K _i1 provides a modem path to T ₁₂ and is transmitted by key operation of the modem device to the station where the modem data is called.

Analog switch (a5, a6) is controlled to be received in a first receiving terminal speakerphone module (MOD) or a modem (MODEM) when currency, _{(R x ', T x'} ).

As described above, even if the communication path between the main system and the key set is busy, the emergency and emergency calls can be answered without interrupting the call, and the modem is installed in the key set when the communication path T ₁₂ does not perform the above function. There is an advantage that can be used as a modem passage.

Claims (1)

A handset and a speakerphone module of the second transmission / reception terminal R _x ', T _x ' of the key set K _i1 to the first call path T ₁₁ having a main system STM and a key set K _i1 . In a key phone system which communicates in a (MOD), a second call path T ₁₂ is provided between the main system STM and the key set K _i1 and at the same time, a key is transmitted through the second call path T ₁₂ . It is connected to the fourth transformer TR ₁₆ of the set K _i1 and is connected to the hybrid coil Y ₂ through the analog switch a ₁ so that emergency calls are made to the speakerphones of the first transmitting and receiving terminals R _x and T _x . The fourth transformer TR ₁₆ and the analog switch a ₄ are connected to each other so that data is transmitted to the modem of the third transmission / reception terminal R _x ″, T _x ″. Emergency transmission and emergency call function and modem configuration circuit in a key phone system.