TR201615956A2 - Efficient method of using the carrying capacity of gateways in VoIP PBXs - Google Patents

Abstract

Efficient method of using the carrying capacity of gateways in VoIP Switchboards The invention is a method that enables efficient use of the IP packet transport capacity of gateways (9) using the SCTP transport protocol in the transport layer and the IUA protocol at the application layer in VoIP exchanges (1). It is an invention that reduces the number of SCTP connections using the global IP infrastructure required between VoIP Switchboards (1) and gateways (9) and also keeps the number of line subscribers served under the gateway (9) and gateway (9) constant. (Figure 1)

Description

DESCRIPTION The method of efficiently using the carrying capacity of the gateways in VoIP Switchboards Technical Area The invention introduces SCTP transport protocol and application at the transport layer in VoIP exchanges. IP packets carrying capacity of gateways using the IUA protocol at the It is about the method that enables it to be used efficiently.

State of the Art SCTP transmits a certain number of messages over an IP and port using D channels, and a transport layer that ensures that this transmission takes place reliably communication protocol. IP packets are carried under this communication protocol.

This SCTP/IP used for BRI lines in VoIP communication as follows The package contains content.

Port Information No Information Protocols/Information SCTP/IP LUA Layer Other Layers Table 1: SCTP/lP message content table Multiple streams can be supported under an SCTP connection. Because The SCTP packet contains the channel number to provide protocol transitions.

In the IUA application layer, which is the upper protocol layer of SCTP, this channel There is a data name (TEXT IID [Interface Identifier]) corresponding to the number. In this way matching is provided between these layers. VoIP in the current art is shown in Figure 3. The SCTP connection between the exchange and the gateways is shown.

VoIP PBX is connected to each gateway with a separate SCTP connection. in connection The batteries used must be different from each other. However, the ports used are different. There is no need. At the same time, the IPs used are located in the location of VoIP exchanges and gateways. used in global IP or smaller environments in the Universal Network It can be a regional IP (valid for example in a town or county). For example, IUA in the application layer above the SCTP protocol for BRI lines protocol is used. Each D channel in SCTP protocol is in IUA protocol corresponds to a D channel. “ba/x” unique for each D channel in the IUA layer A data name such as Each of these channels is over the same SCTP connection. and therefore communicating over the same IP. One SCTP packet per unit time It is a D channel communication using a SCTP packet at the same time. IUA D channels information is also transmitted, which will include more than one D channel information in it. This The situation is completely dependent on the current situation of the incoming/outgoing message traffic between the VoIP PBX and the Gateway. varies according to the situation. Below is the SCTP/IP message content for this multi-state are available. 5' 5 5 o_ UI: o- 01: Other î >< < :E :E Information SCTP/IP IUA Layer Other Layered Layers Table 2: A SCTP/IP message content table for multiple D channels Therefore, the D channels in the IUA layer on an SCTP connection are as follows. can be displayed: Number of channels: K1 The following problems arise in current use: o The increase in VoIP subscribers using BRl lines and the increase in TDM BRI lines' IP infrastructure with VoIP central network conversion, indirectly gateway has increased the number. In current use, gateways are VoIP with global IPs connected to the power plants. Therefore, more IP addresses are needed.

. Also, as the number of SCTP connections increases, ensuring its sustainability, eliminating software complexity and increases the operating costs considerably. Therefore, SCTP connections must be used efficiently.

As a result, due to the above-mentioned negativities and existing solutions It is necessary to make an improvement in the relevant technical field due to the inadequacy of the is locked.

Purpose of the Invention The invention was created by being inspired by the current situations, and the above-mentioned negativities aims to solve.

The main purpose of the invention is to provide the Global IP subsystem required between VoIP exchanges and gateways. reduce the number of SCTP connections using the is to keep the number of line subscribers served under the gateway constant.

The current features used in this invention are as follows: 0 One SCTP connection supports more than one D channel, o Have variable data names of D channels used in IUA protocol it can be.

Protocol splitter gateways located between the VoIP exchange and the gateways in the invention is designed. Newly designed protocol splitter gateways enable network in the same region. It establishes SCTP connection over regional IP with gateways. If the VoIP switchboard The protocol parser establishes SCTP connections over global IP to gateways.

Thus, over a single SCTP connection set up using global IP, More gateways will be able to receive service and the SCTP connection will be used efficiently.

Figure 2 presents the optimization of SCTP connections in the invention.

In the figure below, each of the gateways is used to communicate with the VoIP exchange. SCTP connections are aggregated and combined under a single SCTP connection.

This unified SCTP connection, VoIP trunk and protocol splitter gateways will be used between In this method in the invention, the number of points per SCTP in the VoIP exchange is an increase in the number of channels according to the regional situation and the result of the optimization will be. Each of the D channels under these SCTP connections has new data names “net- will be separated from each other using the format "name/ba/x". < ................................. > Agifba/ GlobalilPÄl SCTP l Transmission < ---------------------------------- > Agi/'mr GlobalilP 1 r SCTP i llctim Line Global IP 1 SCTP l Transmission . Number of Line D Channels: < -------------------------------- > Agu/bal Küi'esellel SCTP My Message A call/call from a gateway connected to the VoIP exchange to the outside of the exchange when it is done; protocol parser gateways SCTP from different gateways The data name in the IUA layer inside the message packets is the name of the gateway that sent the message. changes it by adding its name. It then generates new SCTP packets and sends them into a single It sends it to the VoIP exchange via SCTP connection (transmission line). This SCTP connection is the same it is also used by other gateways that have the same k'L'spherical lPi. VoIP In power plants, this information is separated and subjected to the relevant processing. Your message in parsing The gateway name in it is used.

When it makes a call/call towards a gateway connected to the VoIP Exchange; VoIP exchange, sending messages to gateways located below protocol parser gateways Creates SCTP messages for SCTP this message to the data name in the IUA layer creates by adding the name of the gateway to which the message will be sent and The associated protocol parser sends it to the gateway. If the protocol parser is the gateway It parses this message and sends an SCTP message again according to the gateway it should send. sends this message to the corresponding gateways.

With these methods used in this invention, SCTP connection numbers over 'global IP' reduced the number of line subscribers and gateways served at the same time fixed has been retained. In the invention, the old SCTP/IP message content is preserved and the gateways are communication has not been changed and the gateways use IUA The data names in the layer remain unchanged. Network gateways and line An IP optimization has been ensured independently of its subscribers.

The structural and characteristic features and all advantages of the invention are given in the following figures and It is clearer thanks to the detailed explanation written by making references to these figures. will be understood as such, and therefore the assessment will also include these figures and should be taken into account.

Figures to Help Understand the Invention Figure 1 shows the system enabling the realization of the method of the invention. is the view.

Figure 2 shows the optimization of SCTP connections in the inventive system. shows.

Figure 3 shows the SCTP connection between the VoIP trunk and gateways in the current art. is the view. Drawings do not necessarily need to be scaled and to understand the present invention Unnecessary details may be omitted. Other than that, at least elements that are substantially identical, or at least with substantially identical functions, indicated by the same number.

Description of Part References VoIP PBX Message Generator unit Message separator unit VoIP exchange message splitter unit VoIP PBX Message Generator unit Gateway message Generator unit Gateway message parser unit Gateway VoIP: (Voice over IP - Voice transmission via Internet Protocol) SCTP: (Stream Control Transmission Protocol) User Adaptation Layer of Digital Networks with Integrated Services) BRI: (Basic Rate Interface) TEXT IID [Interface Identifier]: Interface Identifier with Data Name TDM: (Time Division Multiplex) PRI: (Primary Rate Interface) Description of Prior Art Part References A. Existing VoIP PBX B. Existing gateway Detailed Description of the Invention In this detailed description, preferred embodiments of the invention are merely better suited to the subject. for understanding and without any limiting effect is explained.

The invention uses the SCTP transport protocol at the transport layer in VoIP exchanges (1) and Transport IP packets of gateways (9) using the IUA protocol at the application layer It is a system and method that ensures the efficient use of its capacity; where calls are established, checked and serviced; incoming SCTP messages of the SCTP and IUA layers through the message parser (3). which enables it to be processed after decomposition; SCTP with message Generator unit (2) and SCTP to the protocol parser gateway (6) that generates the IUA messages VoIP switchboard (1) that sends the messages, Receiving service from the VoIP exchange (1) to which the line subscribers are directly connected, and gateway (9) providing voice/data communication, v Separating SCTP and IUA messages from VoIP PBX (1) and forwarding VoIP central message splitter unit (4), 0:› Send SCTP messages to the VoIP trunk (1) that compose the SCTP and IUA messages. sender VoIP exchange message Generator unit (5)i sending gateway message Generator unit (7), ~:° Parse and forward SCTP and IUA messages from gateway (9) gateway message parser unit (8) connecting the gateways (9) located in the same region with the VoIP switchboard (1). protocol that connects and switches between global IP and regional IP separator gateway (6) carried out through; From a gateway (9) connected to the VoIP trunk (1), out of the VoIP trunk (1) when it makes a call/call; a. The gateway (9) must send the SCTP message to the regional b. The SCTP message is processed by the gateway message parser (8) separated and sent to the VoIP central message Generator unit (5), c. Protocol parser gateways (6); from different gateways (9) The data name in the IUA layer inside the SCTP message packets, the message by adding the name of the sending gateway (9) and sending this message to the global sending, D. The new SCTP of other gateways (9) sharing the same global IP over the same SCTP connection 'without the need to connect Communication with VoIP switchboard (1), to. The message separator unit (3) receives the said message and receives the data in the IUA layer. by looking at its name, it should parse the message appropriately and send it to the VoIP exchange. (1) orientation, o A call/call to a gateway (9) connected to the VoIP exchange (1) when it is done; a. Message to the protocol parser gateway (6) associated with the gateway (9) To send the name of the VoIP exchange (1), the gateway (9) to be connected, Create SCTP messages and use the protocol parser gateway (6). sending the SCTP message by establishing an SCTP connection between b. The protocol parser gateway (6) sends the aforementioned messages to the VoIP exchange. the message parser unit (4) and sends it to the gateway where it should be sent. (9) according to the SCTP message through the gateway message Generator unit (7) sending it to the relevant gateway (9) by creating When it makes a call/call towards a gateway (9) connected to the VoIP Exchange (1); When generating SCTP messages by the message Generator unit (2), the IUA The name of the gateway (9) per the data name information in the "ba/1" format in the layer A new data name is used in the format "Ag1/bai'1" by adding message to the protocol parser gateway to which the desired gateway (9) is connected. (6) is sent.

Whenever the VoIP trunk message splitter unit (4) receives an SCTP message from the VoIP trunk (1), this will parse the message. When parsing the IUA layer, from the data name in the format “Ag1/bai'1” The gateway (9) extracts the name and the new data name in the format “ba/1” is created. Looking at the gateway (9) name, it matches the message to gateways (9) using regional IP. Network gateway message Generator (7) creates the SCTP message using the new data name and this sends the message to the designated regional IPi gateway (9).

A call/call is made from a gateway (9) connected to the VoIP exchange (1) to the outside of the exchange. when it is done; gateway message parser unit (8) network using regional IP Whenever it receives an SCTP message from its gateway (9), it parses this message and sends it to VoIP. the central message transmits to the Generator unit (5). This VoIP exchange message Generator unit (5), It maps the resulting regional IP to gateways (9) when SCTP parses the message.

When creating the new message, prepend the data name in the "ba/1" format in the IUA layer. Adds the gateway (9) name and creates a new data name in the format “Ag1/ba/1”. This is VoIP The central message Generator (5) creates the SCTP message with the new data name and VoIP sends it to the exchange (1).

Message parser (3), every SCTP message from the protocol parser gateway (6) parses this message when it receives it. “Agli'ba/l” when parsing the IUA layer in this message takes the data name in the format and looks at the gateway (9) name here and sends the message to VoIP. directs it to the relevant unit in the switchboard (1).

In the method of this invention, the gateways (9) are connected to the VoIP exchange (1) through the protocol splitter network. It is provided to be connected hierarchically through gateways (6). a protocol multiple gateways (9) connected to the splitter gateway (6) by regional IP, protocol The splitter gateway (6) is the only one for the gateways (9) connected to the VoIP exchange (1). established a SCTP connection over a global IP. In this way, the gateways (9) By keeping the working mechanism the same, the number of global IPs has been reduced, while doing this, the network gateways (9) and BRI line subscriber numbers are kept constant.

The invention is not only specific to BRl lines, but also supports SCTP and datanamed IUA protocols. It can be applied to any communication network that uses Application other than BRI lines There may be PRI trunks as a field. Some PRI trunks are SCTP and datanamed IUA is able to use.

Claims (2)

REQUESTS 1. It is a system that enables efficient use of IP packets carrying capacity of gateways (9) using SCTP transport protocol at transport layer and IUA protocol at application layer in VoIP exchanges (1). where calls are established, checked and serviced; which ensures that incoming SCTP messages are processed after the SCTP and IUA layers are separated by the message parser (3); VoIP switchboard (1) that creates SCTP and IUA messages with the message generator unit (2) and sends SCTP messages to the protocol splitter gateway (6), Gateway that provides service and voice/data communication from the VoIP switchboard (1) to which the line subscribers are directly connected (9), VoIP trunk message splitter (4) that parses and forwards SCTP and IUA messages from VoIP trunk (1), VoIP trunk message generator unit (5) that creates u* SCTP and IUA messages and sends SCTP messages to VoIP trunk (1) , ~:° Gateway message generator unit (7) that generates SCTP and IUA messages and sends SCTP messages to the gateway (9), 0:› Gateway message parser unit (8), which parses and forwards SCTP and IUA messages from gateway (9) ), which connects the gateways (9) located in the same region with the VoIP PBX (1) and provides the transition between the global IP and the regional IP, the protocol splitter gateway (6). 2. It is a method that enables efficient use of the IP packets carrying capacity of the gateways (9) using the SCTP transport protocol in the transport layer and the IUA protocol in the application layer in VoIP exchanges (1). where calls are established, checked and serviced; which ensures that incoming SCTP messages are processed after the SCTP and IUA layers are separated by the message parser (3); VoIP exchange (1), which creates SCTP and IUA messages with the message Generator (2) and sends SCTP messages to the protocol parser gateway (6), . The gateway (9), which provides service and voice/data communication from the VoIP exchange (1), to which the line subscribers are directly connected, .;. VoIP trunk message parser unit (4), which decouples and forwards SCTP and IUA messages from VoIP trunk (1), VoIP trunk message generator (5), which creates SCTP and IUA messages and sends SCTP messages to VoIP trunk (1), which creates SCTP and IUA messages and the gateway message Generator (7), which sends SCTP messages to the gateway (9), . Protocol splitter with gateway message splitter unit (8) that parses and forwards SCTP and IUA messages from gateway (9), connects gateways (9) located in the same region with VoIP PBX (1), and provides relay between global IP and regional IP implemented through a system including gateway (6); - when it makes a call/call from a gateway (9) connected to the VoIP exchange (1) to outside the VoIP exchange (1); The gateway (9) sends the SCTP message to the VoIP central message Generator unit (5) by parsing the regional SCTP message by the gateway message parser unit (8) to establish the communication, Protocol parser gateways (6); Changing the data name in the IUA layer in the SCTP message packets coming from different gateways (9) by adding the name of the gateway (9) sending the message, sending this message globally. Communication with the VoIP switchboard (1) over the same SCTP connection without the need to establish an SCTP connection, e. When the message separator unit (3) receives the said message and looks at the data name in the LUA layer, parses the message appropriately and forwards it to the VoIP exchange (1), and makes a call/call 5 towards a gateway (9) connected to that VoIP exchange (1); a. In order to send a message to the protocol parser gateway (6) associated with the gateway (9), the VoIP switchboard (1) must create the SCTP messages with the name of the gateway (9) to be connected and establish an SCTP connection between the protocol parser gateway (6) and 10 to create an SCTP connection. sending the message, b. The steps of the protocol parser gateway (6) are to parse the said messages with the VoIP central message parser unit (4) and send the SCTP message to the relevant gateway (9) by creating the SCTP message via the gateway message generator unit (7) according to the gateway (9) it needs to send. it contains.