Onnowpurbo: /* See also */

2014-01-08T03:34:51Z

See also

← Older revision		Revision as of 03:34, 8 January 2014
Line 23:		Line 23:
	* [[Telephone switch]]		* [[Telephone switch]]
	* [[IP Multimedia Subsystem]]		* [[IP Multimedia Subsystem]]


			==Pranala Menarik==

			* [[VoIP]]
			* [[OpenBTS]]

			===Latar Belakang===

			* [[Menjadikan VoIP dan 4G Legal]]
			* [[Sekitar VoIP Rakyat]]
			* [[VoIP: Dasar Hukum Internet Telepon]]
			* [[VoIP: Beberapa Skenario Topologi]]
			* [[VoIP: Pilihan Teknologi Internet Telepon]]
			* [[VoIP: Pengkodean Suara di Jaringan Komputer]]
			* [[VoIP: Konsep Video Conference]]

			===Untuk Pemula===
			* [[VoIP: Kebutuhan Peralatan dan Software]]
			* [[VoIP: Internet Telepon PC ke PC]]

			===Untuk Peneliti / Pencoba===
			* [[VoIP: Bandwidth Internet Telepon]]
			* [[VoIP: Softswitch / Server Internet Telepon]]
			* [[VoIP: Repository Software Internet Telepon]]
			* [[VoIP: Menghubungkan PSTN dan Selular]]

			===Untuk Operator===
			* [[VoIP: Server Video Conference]]
			* [[VoIP: Software dan peralatan client Internet Telepon]]
			* [[VoIP: Penggunaan DAHDI]]
			* [[VoIP: Hardware Client VoIP]]
			* [[VoIP: Hardware Server VoIP]]
			* [[VoIP: Interkoneksi dan Alokasi Nomor Telepon]]
			* [[VoIP: Peering Antar Operator VoIP]]
			* [[VoIP: Menghubungkan PSTN dan Selular]]
			* [[VoIP: Trunk]]

			===Topik Lanjut===
			* [[VoIP: ENUM untuk pengenalan nomor telepon di Internet Telepon]]
			* [[VoIP: Teknik Evaluasi Internet Telepon]]
			* [[VoIP: Troubleshooting]]
			* [[VoIP: Video Conference Server]]

			===Buku Teknologi VoIP===
			* [[Onno W. Purbo]], "VoIP Cikal Bakal Telkom Rakyat", Infokomputer, 2007.
			* http://125.160.17.21/speedyorari/index.php?dir=ebook-voip
			* http://opensource.telkomspeedy.com/speedyorari/index.php?dir=ebook-voip


			[[Category: VoIP]]
			[[Category: Internet Telepon]]

Onnowpurbo: New page: A '''softswitch''' is a central device in a telecommunications network which connects calls from one phone line to another, entirely by means of software running on a computer system. ...

2009-12-21T01:39:43Z

New page: A '''softswitch''' is a central device in a telecommunications network which connects calls from one phone line to another, entirely by means of software running on a computer system. ...

New page

A '''softswitch''' is a central device in a [[telecommunications network]] which connects calls from one phone line to another, entirely by means of software running on a computer system. This work was formerly carried out by hardware, with physical switchboards to route the calls.

A softswitch is typically used to control connections at the junction point between circuit and packet networks. A single device containing both the switching logic and the switching fabric can be used for this purpose; however, modern technology has led to a preference for decomposing this device into a Call Agent and a Media Gateway.

The [[Call Agent|Call Agent]] takes care of functions like billing, call routing, signalling, call services and so on and is the 'brains' of the outfit. A Call Agent may control several different Media Gateways in geographically dispersed areas over a [[TCP/IP]] link.

The [[Media Gateway | Media Gateway]] connects different types of digital media stream together to create an end-to-end path for the media (voice and data) in the call. It may have interfaces to connect to traditional [[Public Switched Telephone Network|PSTN]] networks like [[Digital Signal 1|DS1]] or [[DS3]] ports ([[E-carrier|E1]] or [[STM-1|STM1]] in the case of non-US networks), it may have interfaces to connect to [[Asynchronous Transfer Mode|ATM]] and [[Internet Protocol|IP]] networks and in the modern system will have [[Ethernet]] interfaces to connect [[VoIP]] calls. The call agent will instruct the media gateway to connect media streams between these interfaces to connect the call - all transparently to the end-users.

The [[softswitch]] generally resides in a building owned by the [[telephone company]] called a [[central office]]. The central office will have telephone trunks to carry calls to other offices owned by the telecommunication company and to other telecommunication companies (aka the [[Public Switched Telephone Network]] or [[PSTN]]).

Looking towards the end users from the switch, the Media Gateway may be connected to several access devices. These access devices can range from small [[Analog Telephone Adaptor]] ([[ATA]]) which provide just one [[RJ11, RJ14, RJ25|RJ11]] telephone jack to an [[Integrated access device|Integrated Access Device]] (IAD) or [[Private branch exchange|PBX]] which may provide several hundred telephone connections.

Typically the larger access devices will be located in a building owned by the telecommunication company near to the customers they serve. Each end user can be connected to the IAD by a simple pair of copper wires.

The medium sized devices and PBXs will typically be used in a business premises and the single line devices would probably be found in residential premises.

In more recent times (i.e., in [[IP Multimedia Subsystem]] or IMS), the Softswitch element is represented by the [[Media Gateway Controller]] ([[MGC]]) element, and the term "Softswitch" is rarely used in the IMS context, but another word of [[AGCF]] ([[Access Gateway Control Function]]).

==Feature server as a part of softswitch==
The feature server, often built into a call agent/softswitch, is the functional component that provides call-related features. Capabilities such as [[call forwarding]], [[call waiting]], and [[last call return]], if implemented in the network, are implemented in the feature server. The feature server works closely with the call agent, and may call upon the media server to provide these services. These features do not require the subscriber to explicitly request them but tend to be triggered within the call handling logic.

== See also ==
* [[Telephone switch]]
* [[IP Multimedia Subsystem]]

Softswitch - Revision history

Onnowpurbo: /* See also */

Onnowpurbo: New page: A '''softswitch''' is a central device in a telecommunications network which connects calls from one phone line to another, entirely by means of software running on a computer system. ...