About VoIP - Revision history

Monica: /* VoIP-PSTN gateway */

2013-09-16T11:20:22Z

‎VoIP-PSTN gateway

2013-09-16T11:19:55Z

‎Yate as IAX server and YateClient as IAX client

2013-09-16T11:19:40Z

‎Prepaid and postpaid cards system

2013-09-16T11:19:09Z

‎IVR - Interactive voice response

2013-09-13T14:50:00Z

‎Call center server

2013-09-13T14:49:22Z

‎SIP registration server

2013-09-13T14:48:57Z

‎SIP SBC

2013-09-09T05:53:36Z

‎IAX Server and Client

2013-09-09T05:53:05Z

‎Yate as H323 GateKeeper and YateClient as H323 client

2013-09-09T05:52:21Z

‎H323 Gatekeeper and multiple endpoint server

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 Please see [[How to route and bill from a database|this article]] for an overview on how to build such a service with Yate.
-===VoIP-PSTN gateway===
+===[[VoIP_PSTN_Gateway|VoIP-PSTN gateway]]===
 A gateway is a device used for connecting two different types of networks. In this case, one network is the VoIP network and the other the PSTN. The gateway’s main task is to provide signaling interworking and to transform the information it receives on one side in information compatible with the other side.
 A gateway can consist of only one piece or it can be distributed into more components. These are:

@@ Line 132: / Line 132: @@
 Please follow the following article to see [[How to configure Yate as IAX server]].
-===[[How to route and bill from a database|Prepaid and postpaid cards system]===
+===[[How to route and bill from a database|Prepaid and postpaid cards system]]===
 * Prepaid refers to the fact that you have to first buy the card and then you call a secret number mentioned on the card. This number is used to activate your card. The server remembers what is your account state (how much money you have left, how many calls and to whom they were made, etc.) and allows users that have a positive money account to make calls.

@@ Line 132: / Line 132: @@
 Please follow the following article to see [[How to configure Yate as IAX server]].
-===Prepaid and postpaid cards system===
+===[[How to route and bill from a database|Prepaid and postpaid cards system]===
 * Prepaid refers to the fact that you have to first buy the card and then you call a secret number mentioned on the card. This number is used to activate your card. The server remembers what is your account state (how much money you have left, how many calls and to whom they were made, etc.) and allows users that have a positive money account to make calls.

@@ Line 110: / Line 110: @@
 To use this functionality in Yate see the [[Yate as a PBX]] article and the [[Routing|routing]] section.
-===IVR - Interactive voice response===
+===[[Yate's PHP library|IVR - Interactive voice response]]===
 One easy way to explain what IVR stands for, would be to think at one common mobile telephony service. One like those when you call a short number to activate your international calls for example and you are answered by a nice (or not) voice which tells you: “Press 1 for english… Press 2 for this… Press 3 for that… etc, etc”. And when you press the x key you are redirected to the service you desire or, if you are unlucky, to another “Press 1 for.. “. This is a simple example of Interactive Voice Response, but IVRS can imply more than this.

@@ Line 103: / Line 103: @@
 * Q931 is the call signaling protocol for ISDN networks. The information included in the H225 data which also like stated is concerned with call signaling is used to complete the info carried by Q931 messages which is missing certain important things for a H323 transmission like the IP address.
-===Call center server===
+===[[Yate as a PBX|Call center server]]===
 A call center server redirects callers to the resources that are best equipped to satisfy their needs like a receptionist who transfers your call to some specific department inside an institution. Inside a typical call center server this routing can be done automatically based on various combinations defined using callers’ profiles or other information.

@@ Line 66: / Line 66: @@
 In order to use Yate as a SBC please see [[SIP_SBC|this]] page.
-===SIP registration server===
+===[[SIP_Registration_Server|SIP registration server]]===
 The registration server’s functionality typically stands in setting up and tearing down functionality with a client by using the registration and invite requests as well as clearing and retrieving registrations from a SIP url.

@@ Line 60: / Line 60: @@
 ==Typical setups and applications==
-===SIP SBC===
+===[[SIP_SBC|SIP SBC]]===
 A typical session border controller is used to overcome some of the problems that may appear in a VoIP communication by integrating it between the caller and the called parties signaling path. For more information about SBC please see http://en.wikipedia.org/wiki/Session_border_controller.

@@ Line 122: / Line 122: @@
 You can develop IVR's in Yate using the [[Yate's PHP library|PHP]] and [[YAYPM|Python]] libraries.
-===IAX Server and Client===
+===[[Yate as IAX server and YateClient as IAX client]]===
 IAX is a signaling and media protocol. It operates in peer-to-peer mode, meaning that the connection is made between the two endpoints that are responsible for the protocol operations. When it was designed, the people working on it had the following main purposes: minimize bandwidth usage for control and for media and make it work behind NAT (Network Address Translation). NAT is the process in which an address is passing through a server or firewall that rewrites it. Usually, it is used for multiple computers across a network to share the same Internet connection, using only one public IP. As packets come to the server, it automatically rewrites the private address of each computer to the public IP, also keeping pieces of information about every packet.

← Older revision		Revision as of 05:53, 9 September 2013
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	* Q931 is the call signaling protocol for ISDN networks. The information included in the H225 data which also like stated is concerned with call signaling is used to complete the info carried by Q931 messages which is missing certain important things for a H323 transmission like the IP address.		* Q931 is the call signaling protocol for ISDN networks. The information included in the H225 data which also like stated is concerned with call signaling is used to complete the info carried by Q931 messages which is missing certain important things for a H323 transmission like the IP address.
−
−	~~See [[Yate as H323 GateKeeper and YateClient as H323 client]] to find how to use Yate with H323.~~

	===Call center server===		===Call center server===

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 To use Yate as a SIP registration server please see [[SIP_Registration_Server|this]] page.
-===H323 Gatekeeper and multiple endpoint server===
+===[[Yate as H323 GateKeeper and YateClient as H323 client]]===
 H323 is composed from an entire suite of protocols. The exact definition of H323 states that H323 is a recommendation published by the International Telecommunications Union (ITU) defining the internetworking of elements and protocols with the purpose of multimedia communications over an unreliable packet-based network.