|
|
Simple Private Branch Exchange Implementation in OpenWRT
Stračár, Ivan ; Šilhavý, Pavel (referee) ; Bartl, Milan (advisor)
The diploma thesis deals with the system OpenWRT. Installing this system on the router Siemens Gigaset SX762. Describes how to compile and upload the simple package helloworld into this system. The package was tasked invitation simple phrase "Hello World" to the system console of OpenWRT. Package only serve to show that the system OpenWRT allows users to customize it according to their needs. After that it was installed PBX Asterisk into the system OpenWRT. Proper functioning of PBX Asterisk has been verified to make a call between two software phones ZoiPer. Furthermore, the work described telephony application programming interface (TAPI). Some of its fun- ctions, interfaces and packages needed to communicate with the system OpenWRT. In conclusion, the presented test topology and verify the operation of making calls between analog as well as softphones.
|
|
|
The Open IMS Core and the IP Multimedia Subsystem
Božek, Martin ; Mácha, Tomáš (referee) ; Nagy, Ľuboš (advisor)
This thesis describes architecture of IMS and shows possibilities of IMS platform testing. Theoretical part describes layer model of the IMS as a whole and then describes it’s individual layers. Next chapters analyse key entities of the IMS, interconnection between reference points and features of protocols used in the IMS. Practical part deals with the introduction of Open IMS Core, which was chosen for the IMS technology testing. Settings necessary to carry out testing and interconnection between PBX Asterisk are shown in next chapters. After introduction of IMS desktop clients is carried out an instant messaging communication within the IMS network. The communication is captured and analysed by Wireshark application. Afterwards there is described how SIP protocol sends messages within the IMS. After a brief introduction to the PBX Asterisk, there are discussed assumptions for the interconnection between Asterisk and IMS. There are also described necessary settings needed for implementation and communication testing itself. The first test is an audio session carried out between the desktop IMS client and IP phone registered to the PBX Asterisk. Communication is captured for the analysis of preparation, conduction and termination of the session. After the successful realization of the audio call, video session has been made. The session was analysed in detail, including statistics of control signals and transmitted packets. There are two laboratory excercises in attachement of this thesis, which will help students to understand the IMS technology and communication options within the IMS network
|
|
|
Measuring Quality of Telephone Calls with the Asterisk PBX
Bílek, Petr ; Šilhavý, Pavel (referee) ; Daněček, Vít (advisor)
This thesis contains description of the present methods and algoritms for measuring the quality of telephone call on the PBX Asterisk. Further develop the concept of a system for measuring and implementing the call embbeded system VOIPAC PXA270M. Based on theoretical analysis is carried out discussions between C, Java and PHP,which results in the selection of appropriate programming language suitable for implementation in embedded system. The concept is realized by creating an application written in a particular programming language. Part of this work is verification created application using experimental measurments of telecommunications system. The results of experimental measurements are discussed in the final evaluation.
|
|
|
Intercommunication of Asterisk and VCON VoIP PBX
Balon, Jiří ; Říha, Kamil (referee) ; Číka, Petr (advisor)
The main goal of this bachelor thesis was to familiarize with VoIP telephony development and its nowadays utilization. First part of the work includes description of known communication protocols SIP and H.323 architecture and their usage in communication. Next part is dedicated to software PBX Asterisk that runs under Ubuntu distribution of Linux operation system. The process of PBX installation is described there as well as its adjustment for SIP and H.323 for communication within IP net. There is also described software PBX VCON that runs under Windows XP operation system. Beyond the adjustment of the PBXs there is also concrete adjustment of software clients SJPhone and X-Lite that are necessary for communication between individual telephone exchanges. The final chapter is dedicated to the problems of mutual connection (intercommunication) of individual telephone exchanges Asterisk and VCON.
|
|
|
Multiplatform gateway for voice communication in real-time
Starzyczny, Radek ; Krkoš, Radko (referee) ; Novotný, Bohumil (advisor)
This master's thesis is focused on VoIP communications. It describes deploy of the operating system OpenWRT, analog interface of router Gigaset SX762 and GSM gateway for receiving or place calls. The paper describes the protocols involved in the communication and basic configuration elements. Deploying IP telephony enables to reduce the cost of operation and provides a number of additional functions.
|
|
|
Intercommunication of Asterisk and VCON VoIP PBX
Balon, Jiří ; Říha, Kamil (referee) ; Číka, Petr (advisor)
The main goal of this bachelor thesis was to familiarize with VoIP telephony development and its nowadays utilization. First part of the work includes description of known communication protocols SIP and H.323 architecture and their usage in communication. Next part is dedicated to software PBX Asterisk that runs under Ubuntu distribution of Linux operation system. The process of PBX installation is described there as well as its adjustment for SIP and H.323 for communication within IP net. There is also described software PBX VCON that runs under Windows XP operation system. Beyond the adjustment of the PBXs there is also concrete adjustment of software clients SJPhone and X-Lite that are necessary for communication between individual telephone exchanges. The final chapter is dedicated to the problems of mutual connection (intercommunication) of individual telephone exchanges Asterisk and VCON.
|
|
|
Simple Private Branch Exchange Implementation in OpenWRT
Stračár, Ivan ; Šilhavý, Pavel (referee) ; Bartl, Milan (advisor)
The diploma thesis deals with the system OpenWRT. Installing this system on the router Siemens Gigaset SX762. Describes how to compile and upload the simple package helloworld into this system. The package was tasked invitation simple phrase "Hello World" to the system console of OpenWRT. Package only serve to show that the system OpenWRT allows users to customize it according to their needs. After that it was installed PBX Asterisk into the system OpenWRT. Proper functioning of PBX Asterisk has been verified to make a call between two software phones ZoiPer. Furthermore, the work described telephony application programming interface (TAPI). Some of its fun- ctions, interfaces and packages needed to communicate with the system OpenWRT. In conclusion, the presented test topology and verify the operation of making calls between analog as well as softphones.
|
|
|
Multiplatform gateway for voice communication in real-time
Starzyczny, Radek ; Krkoš, Radko (referee) ; Novotný, Bohumil (advisor)
This master's thesis is focused on VoIP communications. It describes deploy of the operating system OpenWRT, analog interface of router Gigaset SX762 and GSM gateway for receiving or place calls. The paper describes the protocols involved in the communication and basic configuration elements. Deploying IP telephony enables to reduce the cost of operation and provides a number of additional functions.
|
|
|
Measuring Quality of Telephone Calls with the Asterisk PBX
Bílek, Petr ; Šilhavý, Pavel (referee) ; Daněček, Vít (advisor)
This thesis contains description of the present methods and algoritms for measuring the quality of telephone call on the PBX Asterisk. Further develop the concept of a system for measuring and implementing the call embbeded system VOIPAC PXA270M. Based on theoretical analysis is carried out discussions between C, Java and PHP,which results in the selection of appropriate programming language suitable for implementation in embedded system. The concept is realized by creating an application written in a particular programming language. Part of this work is verification created application using experimental measurments of telecommunications system. The results of experimental measurements are discussed in the final evaluation.
|
|
|
The Open IMS Core and the IP Multimedia Subsystem
Božek, Martin ; Mácha, Tomáš (referee) ; Nagy, Ľuboš (advisor)
This thesis describes architecture of IMS and shows possibilities of IMS platform testing. Theoretical part describes layer model of the IMS as a whole and then describes it’s individual layers. Next chapters analyse key entities of the IMS, interconnection between reference points and features of protocols used in the IMS. Practical part deals with the introduction of Open IMS Core, which was chosen for the IMS technology testing. Settings necessary to carry out testing and interconnection between PBX Asterisk are shown in next chapters. After introduction of IMS desktop clients is carried out an instant messaging communication within the IMS network. The communication is captured and analysed by Wireshark application. Afterwards there is described how SIP protocol sends messages within the IMS. After a brief introduction to the PBX Asterisk, there are discussed assumptions for the interconnection between Asterisk and IMS. There are also described necessary settings needed for implementation and communication testing itself. The first test is an audio session carried out between the desktop IMS client and IP phone registered to the PBX Asterisk. Communication is captured for the analysis of preparation, conduction and termination of the session. After the successful realization of the audio call, video session has been made. The session was analysed in detail, including statistics of control signals and transmitted packets. There are two laboratory excercises in attachement of this thesis, which will help students to understand the IMS technology and communication options within the IMS network
|
guest ::
