Communication apparatus for providing a modulated analog wave

A telephone exchange apparatus, comprising:

• table memory means for storing an accounting table for determining conversation fees;
• writable memory means for storing data written therein;
• writing means for writing conversation fee data in said writable memory means by referring the accounting table every time when a conversation is performed;
• connection means for connecting an extension facsimile device;
• and
• transmission means for converting conversation fee data written in said writable memory means into a facsimile signal and transmitting the facsimile signal to the connected extension facsimile device.

An exchange apparatus comprising:

• connection means for connecting an image recording apparatus;
• storage means for storing digital data which correspond to an analog waveform;
• read means for reading out the digital data from a storage location which corresponds to an image signal to be transmitted;
• conversion means for converting the digital data read by said read means into analog signals and sending the analog signals to said image recording apparatus;
• and
• transmitting means for transmitting the image signal.

A telephone exchange apparatus comprising:

• storage means for storing digital data which correspond to an analog waveform;
• read means for reading out the digital data from a storage location which corresponds to an image signal to be transmitted;
• network means for connecting an image recording apparatus and plural telephone sets;
• and
• transmission means for transmitting the digital data read out by said read means to said connected image recording apparatus.

A telephone exchange apparatus comprising:

• input means for inputting information to be transmitted;
• storage means for storing plural data;
• read means for reading out plural data sequentially from said storage means according to a first rule so that plural data which represent an analog wave are read out, said read means determining a storage location to be read out in accordance with the information inputted by said input means and a second rule which is different from said first rule so that plural data which represent the analog wave as modulated at a predetermined timing are read out;
• transmitting means for transmitting the information;
• network means for connecting a terminal device and plural telephone sets;
• and
• control means for controlling said network means so that the plural data read out by said read means are received by said terminal device.

A method for managing a conversation fee in a telephone exchange apparatus, comprising the steps of:

• (1) determining conversation fee information by referring to an accounting table every time when a conversation is performed;
• (2) storing the conversation fee information determined at the determining step into a memory;
• (3) calling an extension facsimile device in accordance with a requirement for recording of the conversation fee;
• (4) reading out the conversation fee information stored in the memory when a response of the extension facsimile device is detected;
• and
• (5) converting the read out conversation fee information into a facsimile signal and transmitting the facsimile signal to the extension facsimile device.

A method for generating digital data which represent an analog wave modulated according to information to be transmitted to a digital network, comprising the steps of:

• (1) reading out plural digital data sequentially from a memory in accordance with a first rule in synchronism with synchronizing signals of the digital network, the memory storing plural digital data in accordance with the analog waveform;
• (2) inputting the information to be transmitted;
• (3) determining the address of the memory from which digital data are read out according to the information inputted at the inputting step and according to a second rule which is different from said first rule;
• and
• (4) reading out the plural data sequentially from the determined address according to the first rule.

A transmission apparatus for transmitting information via a digital network, comprising:

• storage means for storing digital data which corresponds to an analog waveform;
• read means for reading out the digital data from a storage location which corresponds to the information in synchronism with synchronizing signals of the digital network;
• and
• transmission means for transmitting the digital data read out by said read means to the digital network wherein said read means reproduces the analog waveform by reading out a plurality of data sequentially from a plurality of storage locations at a predetermined address interval, determines an address to be read out next after it reads out a plurality of data in accordance with the information and reproduces modulated analog wave by reading out a plurality of data sequentially from a determined address at above predetermined address interval.

A method for transmitting digital data which represents an analog wave modulated according to information to be transmitted to a digital network, comprising the steps of:

• (1) reading out plural digital data sequentially from a memory in accordance with a first rule, the memory storing plural digital data in accordance with the analog waveform;
• (2) transmitting the plural digital data read out at said step (1) to the digital network in synchronism with synchronizing signals of the digital network;
• (3) inputting the information to be transmitted;
• (4) determining the address of the memory from which digital data is read out according to the information inputted at the step (3) and according to a second rule which is different from said first rule;
• (5) reading out the plural data sequentially from the determined address according to the first rule;
• and
• (6) transmitting the plural digital data read out at said step (5) to the digital network.