Title: Method for processing a large amount of intra-calls in a remote control system of a full electronic telephone
Abstract: A method for processing a great amount of intra-calls in the remote control system of a full electronic exchange system, whose time switch block is provided with a voice memory device and a control memory device to switch the PCM data to the intra-direction, and with a call pass controller to transfer to the host system or loop to the intra-direction the PCM data, comprises the steps of writing call direction data for designating the intra-call direction into the data region of the control memory device to switch the PCM data sequentially stored in the voice memory device to the intra-direction, and looping the entire channels to the intra-direction to switch the PCM data from the time switch block to the intra-direction if the call direction data designates the intra-call direction according to the treatment of the great amount of the intra-calls.
Patent Number: 7,002,954 Issued on 02/21/2006 to Song
| Inventors:
|
Song; Choon-Keun (Seoul, KR)
|
| Assignee:
|
Samsung Electronics Co., Ltd. (Suwon-si, KR)
|
| Appl. No.:
|
625943 |
| Filed:
|
July 26, 2000 |
Foreign Application Priority Data
| Jul 26, 1999[KR] | 1999-30440 |
| Current U.S. Class: |
370/360; 370/363 |
| Current Intern'l Class: |
H04L 12/50 (20060101) |
| Field of Search: |
370/360,362,363
|
References Cited [Referenced By]
U.S. Patent Documents
Primary Examiner: Vu; Huy D.
Assistant Examiner: Ryman; Daniel
Attorney, Agent or Firm: Cha & Reiter, L.L.C.
Claims
What is claimed is:
1. A method for processing a large amount of intra-calls in a remote control
system of a full electronic exchange system having a time switch block with a voice
memory device and a control memory device having an input and output data regions
to switch the Pulse Code Modulation (PCM) data to an intra-direction, and a call
pass controller for transferring said PCM data to a host system and for looping
said PCM data to said intra-direction, comprising the steps of:
writing call direction data for designating an intra-call direction into the
respective said input and output data regions of said control memory device at
a designated memory and address to switch said PCM data sequentially stored in
said voice memory device to said intra-direction; and,
looping entire channels to said intra-direction to switch said PCM data from
said time switch block to said intra-direction if said call direction data designates
said intra-call direction based on the amount of said intra-calls.
2. The method as defined in claim 1, wherein the step of writing call direction
data further includes the step of writing data to select the kind of input/output
memory, the capacity of an input/output time slot, the number of a sub-highway
inputted/outputted through an intra-junctor, and the number of the channel inputted/outputted
through said intra-junctor.
Description
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims
all benefits accruing under 35 U.S.C. Section 119 from an application for METHOD
FOR PROCESSING A GREAT AMOUNT OF INTRA-CALLS IN A REMOTE CONTROL SYSTEM OF A FULL
ELECTRONIC TELEPHONE EXCHANGE SYSTEM filed earlier in the Korean Industrial Property
Office on Jul. 26, 1999 and there duly assigned Ser. No. 30440/1999.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a remote control system of a full electronic
telephone (PSDN/PSTN) exchange system. More particularly, the present invention
relates to a method for processing a large number of intra-calls in the remote
control system regardless of the limitation of the capacity of an intra-junctor.
2. Description of the Related Art
The conventional remote control system of a full electronic telephone switching
system employs a non-blocking method for processing intra-calls (internal calls).
Yet, the number of intra-calls that can be processed within the full electronic
telephone exchanger is limited according to the intra-junctor capacity of the time
switch block.
In the conventional TDX-10 and TDX-10A system utilizing a time division multiple
access (TDMA) mode, the capacity of the intra-junctor is limited to less than a
1K time slot when processing the intra-calls in a non-blocking remote control system.
Hence, the remote control system may not process a large number of intra-calls
in non-blocking way due to both the traffic limitation and the capacity limitation
of the intra-junctor. In addition, it is not possible to equip the intra-junctor
with a large capacity due to the incompatibility with the host system, thus requiring
a function for collecting lines to process a large amount of the intra-calls. Consequently,
the limitation of the calls according to the capacity of the intra-junctor imposes
problems in processing the intra-calls in a remote control system when dealing
with a large capacity greater or equal to a 4K-time slot.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a method for processing a
large amount of the intra-calls in the remote control system of a full electronic
exchange system, which enables the remote control system to employ a larger capacity
to be used in connection with the host link path.
It is another object of the present invention to provide a method for processing
a large amount of the intra-calls in the remote control system of a full electronic
exchange system, which enables the remote control system to employ both the time
slot for the intra-junctor and the 4K time slot for the host link path.
According to an aspect of the present invention, a method for processing
a great amount of intra-calls in the remote control system of a full electronic
exchange system, whose time switch block is provided with a voice memory device
and a control memory device to switch the PCM (Pulse Code Modulation) data to the
intra-direction, and with a call pass controller to transfer the PCM data to the
host system or to loop the PCM data to the intra-direction, the method comprising
the steps of writing call direction data for designating the intra-call direction
into the data region of the control memory device to switch the PCM data sequentially
stored in the voice memory device to the intra-direction, and looping the entire
channels to the intra-direction to switch the PCM data from the time switch block
to the intra-direction if the call direction data designates the intra-call direction
according to the treatment of the great amount of intra-calls.
The present invention will now be described more specifically with reference
to the drawings attached only by way of example.
BRIEF DESCRIPTION OF THE ATTACHED DRAWINGS
FIG. 1 is a block diagram for illustrating the structure of the time switch
of the remote control system of a conventional full electronic exchange system;
FIG. 2 is a block diagram for illustrating the structure of the time switch
control and maintenance adapter (TSCMA) according to the present invention;
FIGS. 3A and 3B are examples of the write format of a control memory device; and
FIG. 4 is a schematic diagram for illustrating the process of treating a great
amount of the intra-calls by the remote control system according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In the following description, for purposes of explanation rather than limitation,
specific details are set forth such as the particular architecture, interfaces,
techniques, etc., in order to provide a thorough understanding of the present invention.
However, it will be apparent to those skilled in the art that the present invention
may be practiced in other embodiments that depart from these specific details.
For the purpose of clarity, detailed descriptions of well-known devices, circuits,
and methods are omitted so as not to obscure the description of the present invention
with unnecessary detail.
With reference to FIG. 1, the time switch and link (TSL) circuit of the remote
control system of a conventional full electronic exchange system comprises a sub-highway
multiplexer & demultiplexer adapter (SMDXA)
100 for multiplexing the data
received through the sub-highway SHW
0˜
063 and the information
in the form of PCM coded data is transferred to a time switch control and maintenance
adapter (TSCMA)
200. Similarly, the SMDXA
100 demultiplexes the PCM
data received from the TSCMA
200 and transfers the demultiplexed PCM data
to the sub-highway SHW
0˜
63.
The TSCMA
200 receives clock signals from a maximum of 4 local transfer
and receiver interface adapters (LTRIAs)
300 and two pairs of signals in
the level of low voltage differential signaling (LVDS) from a doubled remote network
synchronization equipment (RNSE) when installed in a remote access switching module
(RASM). Namely, one pair from the network synchronization A-side of the RASM and
the other pair from the B-side are received from the supplemental connector of
a time switch back panel adapter (TSBPA) through a 3*3 clock-cable. Since the fourfold
link clock signal and twofold network synchronization clock signal may have different
phases, a selected reference clock signal is transmitted to both SMDXA
100
and LTRIA
300 for the synchronization clock signal of the TSL block.
The LTRIA
300 receives the reference clock signal and reproduces the synchronization
clock signal, transferring the FP2 and CP2 signals required for selecting the internal
synchronization clock signal of the TSL in the LVDS level and the valid signal
in the TTL level to the TSCMA
200. A telephony device control master (TDCMA)
400 is provided as a lower processor to control the devices.
FIG. 2 illustrates the structure of the TSCMA according to the present invention.
It includes a SMDXA Rx combiner
201 to combine the PCM data received from
the SMDXA
100 of FIG. 1, treating a 2K time slot for each SMDXA and at maximum
a 8K time slot when having four SMDXAs. The signal line receives the PCM data in
the LVDS level.
A clock reception/distribution unit
203 receives the FP2 and CP2 signals
inputted from the LTRIA
300 to the TSCMA
200 to distribute the synchronization
pulses and clock signals selected in the same way for each doubled board among
the boards. An RS-485 device
205 receives the signals from the TDCMA
400
and interfaces through a DS-BUS I/F
209, and the received signals are also
stored in a buffer
206 for a subsequent transmission to a System Address/Data
Bus (SADL)
217.
An SMDXA Tx combiner
207 switches the PCM data of the TSCMA
200
to the SMDXA
100, treating a 2K time slot for each SMDXA, and at maximum
8K time slot for four SMDXAs. The PCM data line transmits data in the LVDS level.
A Tx control memory combiner
211 comprises a voice memory device and control
memory device serve to switch 16.384 Mbps voice data of 2K time slot inputted from
the SMDXA
100 at maximum 8K time slot in the inter-direction (S-Switch or
Host system) and intra-direction. Here, the switched PCM data may be transferred
to the inter-direction (S-Switch), or looped to an Rx control memory combiner
213.
In addition, the 2K time slot PCM data in the intra-direction is demultiplexed
in the outside of the memory module with the even 1K for the intra-looping and
the odd
1K to the additional services. A Dumx
223 is provided to
receive the output of the Tx control memory combiner
211.
The Rx control memory combiner
213 switches the 2K time slot PCM data
inputted from the LTRIA
300, and the 2K time slot PCM data formed through
the inter-path. The LTRIA
300 may contain at maximum 4K-time slot, and transmit
the switched PCM data at maximum 8K-time slot to the SMDXA
100 in the LVDS
level. A time slot-rearranging unit
215 rearranges the time slot of the
intra-switched PCM data. A Mux
225 is coupled to receive the output of the
time slot-rearranging unit
215, and the output of the Mux
225 is
transmitted to a tone bert
229 for conversion or to a bit error-rate test.
A call pass controller Sel
219 is a looping processor to the host system,
making the inter-call service of the host system not require the call pass through
the LTRIA
300. Hence, the entire channels are looped and used for the call
pass under S/W control; a maximum of 4K-time slot may be used.
A LTRIA Tx combiner
221 transfers the PCM data switched in the TSCMA
200
to the LTRIA
300, treating
2K time slot for each LTRIA, and at maximum
4K time slot for two LTRIAs. The PCM data is transmitted in the LVDS level. An
additional service combiner
227 serves to process recorded voice guides,
conference calls, DTMF, and R2 signals, and also transmits the reference clock
signals MCLK and MFS to the TSCMA
200. An LTRIA Rx combiner
231 serves
to combine the PCM data received from the LTRIA
300, treating
2K-time
slot for each LTRIA. The PCM data is received in the LVDS level.
Hereinafter is described the write format of the control memory device
in reference to FIGS. 3A and 3B. In order to control the PCM data inputted from
the TSL block, the control memory should be written by the lower processor. Thus,
the control memory device is written with the format, as shown in FIGS. 3A and
3B, in order to switch the data sequentially written into the voice memory device
to a desired direction. If the inter-directional data region Bit
15(LS)
of the control memory device is set to "0" while processing a large amount of the
intra-calls, the inter-call is written into the Rx-direction voice memory becoming
the intra-call instead of the inter-call of the S-Switch direction, so that 4K
inter-call may be used as the intra-call by employing the data region Bit
15
when switching the
2K and
4K regions of the intra-call.
The data regions of the control memory device are divided into the output data
region as shown in FIG. 3A and the input data region as shown in FIG. 3B, written
with data for selecting a memory and address for each input/output data, kind of
the input/output memory, capacity of the input/output time slot, number of the
sub-highway input/output through the intra-junctor, and data for selecting the
channel number input/output through the intra-junctor. In addition, the output
data region is written with data for E/O (Even/Odd) data, while the input data
region is written with the data for designating the inter- and intra-call, and
with the data for inserting and retrieving the cut-off-cut-bits by the TSCMA
200.
Referring to FIG. 4, a large amount of intra-calls are looped by writing
data for designating the intra-calls into the data region of the control memory
device, as shown in FIG. 3. As described above, this is achieved by providing the
time switch block of the full electronic exchange system with a voice memory device
and a control memory device to switch the PCM data to the intra-direction and with
a call pass controller to transfer to the host system or loop to the intra-direction
the PCM data. Then, the data region of the control memory is written with the call
direction data for designating the intra-call direction to switch the PCM data
sequentially stored in the voice memory device to the intra-direction, so that
the entire channels may be looped to the intra-direction to switch the PCM data
from the time switch block to the intra-direction.
Thus, the remote control system of the full electronic exchange system may
process a large amount of intra-calls by employing the host link path for processing
them under a software control without any additional board and hardware, regardless
of the capacity of the intra-junctor. While the present invention has been described
in connection with specific embodiments accompanied by the attached drawings, it
will be readily apparent to those skilled in the art that various changes and modifications
may be made thereto without departing the gist of the present invention.
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