Telephonic communications – Special services
Reexamination Certificate
1998-12-04
2002-04-23
Smith, Creighton (Department: 2742)
Telephonic communications
Special services
C379S229000, C370S220000
Reexamination Certificate
active
06377673
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an intelligent peripheral system and a call processing method thereof, and in particular to an improved IP(Intelligent Peripheral) system and a call processing method thereof which are capable of directly being connected with another IP system and implementing an easier expandability of a resource channel by separately connecting an apparatus processing a protocol matching function between a user and an IP network and an apparatus processing a call processing function.
2. Description of the Conventional Art
The IP(Intelligent Peripheral) system is directed to an independent intelligent network system which is capable of providing a user who requests an advanced intelligent network service through a SSP(Service Switching Point) with a special resource such as a guide broadcasting, a DTMF(Dual Tone Multi-Frequency) gathering, an audio recording, an audio mixing, an audio recognition, a FAX transmission/receiving function, etc. In particular, an IP(Intelligent Peripheral) system which is connected with another advanced intelligent network element through a NO.
7
signaling network in the IP system is called as a network IP(Network Intelligent Peripheral) system.
FIG. 1
is a view illustrating an advanced intelligent network including the above-described IP. In the advanced intelligent network, a SCP(Service Control Point)
10
, a SSP(Service Switching Point)
20
and an IP system
30
are connected with a common line signal network
50
through a plurality of STPs(Signaling Transfer Point)
51
. At this time, the IP
30
connects a bearer channel
40
and a SSP
20
based on an E1 trunk and communicates a signal message with the SCP
10
and the SSP
20
through a signaling link
60
connected with the STP
51
.
The IP
30
is formed of a resource sub-system which performs a call processing operation by allocating a resource to a bearer channel using an ISUP(ISDN user Part) and an INAP(Intelligent Network Application Protocol) which are connected in a common line signal network platform.
FIG. 2
illustrates a procedure that an advanced intelligent network system provides a user with an intelligent network service. As shown therein, when a user transmits a request message for an intelligent network service in Step S
201
, the SCP
10
recognizes the intelligent network service request and allows the SSP
20
to connect the bearer channel with the IP
30
for providing a user with a special resource in accordance with a service logic in Step S
202
. The SSP
20
transmits an IAM(Initial Address Message) which set a called party address as an address of the IP
30
for connecting the bearer channel. At this time, the IAM is transferred through a signaling route of the common line signal network. The IP
30
which receives the IAM transmits an ACM(Address Complete Message) to the SSP
20
in accordance with an ISUP call processing procedure in Step
204
and requests a special resource to the SCP
10
for the user.
The SCP
10
received the request from the IP
30
drives the special resource in the IP
30
in accordance with the service logic, and the IP
30
transmits an AM(Answer Message) in accordance with an ISUP call processing procedure in Step S
207
and drives the special resource for therein implementing an interface with the user based on the special resource in Step S
208
. In addition, a result of the special resource is informed to the SCP
10
. At this time, the SCP
10
may continuously instructs a special resource driving and releases a bearer channel between the SSP
20
and the IP
30
. If the bearer channel between the SSP
20
and the IP
30
is released, it is performed based on the ISUP call processing procedure.
Namely, when a channel release request signal is transmitted from the SCP
10
to the SSP
20
in Step S
210
, the SSP
20
received the signal transmits a REL(Release) message to the IP
30
for releasing the bearer channel, and the IP
30
transmits a RLC(Release Complete) message in Step S
212
.
When the IP is formed of an independent network, the call processing is performed based on the ISUP and INAP signal processing method. In the conventional exchange, the call is processed based on the R
2
or ISUP signal method. An output repeater bearer channel is obtained by interpreting the called number of the input repeater bearer channel and IAM based on a number interpretation function of the exchange for thereby switching the bearer channel.
In the case of the conventional IP system formed of the resource sub-systems, if it is needed to expand the channel capacity of the special resource, the capacity of the resource sub-system should be expanded. In this case, since there is a limit in the capacity of the system for expanding the resource sub-system, other IP systems formed of the resource system should be added to the common line signal network. Therefore, the common line signal network platform is build for every IP system which is to be build for thereby increasing the fabrication cost of the system.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an intelligent peripheral system and a call processing method thereof which overcome the aforementioned problems encountered in the conventional art.
It is another object of the present invention to provide an intelligent peripheral system and a call processing method thereof which are capable of directly being connected with another IP system and implementing an easier expandability of a resource channel by separately connecting an apparatus processing a protocol matching function between a user and an IP network and an apparatus processing a call processing function.
In order to achieve the above objects, there is provided an intelligent peripheral system which includes an apparatus storing and maintaining a special resource information for providing an intelligent network system to a user in accordance with a request of the user, and an apparatus performing a protocol matching function and a call processing function between a service switching point(SSP) and a service control point(SCP) of the advanced intelligent network system, wherein said both apparatuses are separately installed for thereby implementing a direct connection to another intelligent network system through a common line signal network and easily expanding a resource channel.
In order to achieve the above objects, there is provided a call processing method of an intelligent peripheral system which includes the steps of a first step in which the SSP receives a request message for an intelligent network service from a user and transmits an initial address message(IAM) to the resource exchange sub-system for a bearer channel connection between the SSP and the IP providing system, a second step in which the resource exchange sub-system which received the IAM checks the capacity of the resource sub-system to provide a user with a special resource, a third step for transmitting an address receiving completed message(ACM) to the SSP and then requesting a special resource to the SCP when the resource sub-system is available as a result of the check of the second step, a fourth step for selecting an available special channel among the special resource channels connected between the resource exchange sub-system and the resource sub-system in accordance with a special resource requested, requesting a connection to the time switch of the resource exchange sub-system for connecting the selected special resource channel and the bearer channel and transmitting an answer message(ANM) to the SSP, a fifth step in which the resource exchange sub-system drives the special resource of the resource sub-system connected by the special channel for receiving a special resource from the resource sub-system and transmits a result of the special resource providing operation to the SCP, and a sixth step for maintaining a communication state so that a special resource is transmitted to the user through a special channel set between the
Cho Min Su
Kim Tae Il
Cohen & Pontani, Lieberman & Pavane
Electronics and Telecommunications Research Institute
Smith Creighton
LandOfFree
Intelligent peripheral system and call processing method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intelligent peripheral system and call processing method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intelligent peripheral system and call processing method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2904946