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Topic: Network Switching Subsystem

Related Topics

GSM services

Circuit Switched Data

GPRS Core Network

Base station

GSM

Global System for Mobile Communications

General Packet Radio Service

GSM frequency ranges

Base Station Subsystem

Mobile phone

Public switched telephone network

GPRS

PSTN

Princess Helena of the United Kingdom

Platform

	Network Switching Subsystem - Wikipedia, the free encyclopedia
		Network Switching Subsystem, or NSS, is the component of a GSM system that carries out switching functions and manages the communications between mobile phones and the Public Switched Telephone Network.
		The Network Switching Subsystem, also referred to as the GSM core network, usually refers to the circuit-switched core network, used for traditional GSM services such as voice calls, SMS, and Circuit Switched Data calls.
		The GPRS Core Network with the rest of the GSM core network.
	en.wikipedia.org /wiki/Network_Switching_Subsystem (2457 words)

	What is Layer 3 Switching
		Each subsystem, or layer, is often quite distinct from others within the same system or network, but depends upon access to the others for its survival.
		Network participants, whether infrastructure equipment (switches and routers) or end systems (clients and servers), may include some or all of the protocol stack.
		But concurrent with the increasing acceptance of Layer 2 switching as an essential component of network infrastructure were two other developments: the migration of servers to server farms for increased security and management of data resources; and the deployment of intranets, organization-wide client/server communications based on Web technology.
	www.pulsewan.com /data101/layer3_switching_basics.htm (5241 words)

	Static network communication subsystem
		Circuit switching involves first reserving a connection through the network from source to destination, via intermediate nodes if need be, before transmitting the entire message.
		However circuit switching can cause deadlock since the reservation of a connection in a circuit may be waiting for the connection to be released by some other circuit which in turn is waiting for the first circuit to release a connection.
		Since packet switching incurs a large delay, a modification is to allow packets to be ``cut-through" to the next node on the path if a connection is available.
	www.cs.mu.oz.au /677/notes/node46.html (920 words)

	Karabakh Telecom (Site not responding. Last check: 2007-10-19)
		Voice and data on the radio side are adapted to the standardized 64 kbit/s network of the switching subsystem (SSS).
		DLUB (Digital Line Unit B) The DLUB is used in the digital electronic switching system (GSM) to connect the subscribers and to concentrate the subscribers' traffic in the direction of the GSM network Node.
		It is responsible in the digital switching system (GSM) for common functions such as the coordination of the distributed peripheral microprocessor controls and the data transfers between them.
	www.karabakhtelecom.com /about_gsm.htm (1080 words)

	Mobile communications - Patent 6580907
		A network as claimed in claim 12, including means arranged to respond to receipt from said other communications network of a message in respect of that specified user and containing location register update information by changing the location identifier of that specified user's entry to that for said other communications network.
		A network of the present invention may be arranged to make said request of at least one of the other communications networks for said network identifier by sending a query message in respect of that visiting user to that one of said other communications networks which corresponds to the global address of that visiting user.
		It comprises corresponding subsystems MSS 112, BSS 114, NSS 116 and OSS 118, with its components 120 to 134 and 142, corresponding to components 20 to 34, 40 and 42 of the network of FIG.
	www.freepatentsonline.com /6580907.html (6634 words)

	What is GSM
		The BSC is the connection between the Mobile Station and Mobile Switching Center.
		There is logically one HLR per GSM network, although it may be implemented as a distributed database.
		GMSC is basically a switch, which is able to interrogate the subscribers HLR to obtain routing information.
	www.pulsewan.com /data101/gsm_basics.htm (1615 words)

	Alvarion Wireless - Breeze 2000 (Site not responding. Last check: 2007-10-19)
		As a large scale deployable network, it is particularly optimal for small-to-medium scale networks in urban, suburban and rural areas.
		Large scale deployable, the Breeze2000 is particularly optimal for small-to-medium scale networks in urban, surburban and rural areas.
		Network Switching Subsystem for your switching and value added services on your CDMA network.
	www.talipia.com /breeze2000.html (153 words)

	Alvarion Wireless Wimax / CDMA : UltraWAVE
		Rapid deployment is a key benefit for tactical networks as well as offers a significant competitive edge in the battle for subscriber base.
		The GSM NOW (Network-On-Wheels) is a complete GSM network in a vehicle or portable trailer/container; easily and rapidly deployable, ideal for disaster recovery and temporary network outages.
		Network Switching Subsystem - Switching and Value Added Services for your GSM network.
	www.talipia.com /ultrawave.html (258 words)

	GPRS Glossary and Definitions
		A database that resides within a cellular network to hold current details about a customer, the equipment in use, the service(s) required, the user's identification encryption code, and the users "Home" cell, along with what network the customer was last known to be using.
		The Network Switching Subsystem or NSS refers to that part of a GSM network primarily responsible for interconnection to the Public Service Telephone Network (PSTN).
		A virtual private network (VPN) is a private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures.
	support.t-mobile.com /knowbase/root/public/tm21389.htm (3483 words)

	Wireless Network Infrastructure Products
		Our web site is primarily aimed at mobile computing and RF network professionals in enduser organizations who normally evaluate which network infrastructure may be suitable for their mobile applications.
		This network infrastructure is aimed primarily at wireless data network service providers who want to provide shared public wireless packet data services to enduser organizations.
		Network Switching system is based on Nortel’s DMS SuperNode architecture.
	www.mobileinfo.com /product_dir/net_infra.htm (1283 words)

	GSM: About GSM
		The NSS does not deal with the air interface directly, but it is the heart of the GSM system to integrate the BSS with the rest of the telecommunication world.
		Compared to the bit error ratio of the fixed network, which is on the order of 10^-6 to 10^-9, the quality of transparent data service is often insufficient for may applications, especially under adverse conditions.
		From a conceptual viewpoint, the A interface in GSM networks is the interface between the MSCs, the ISDN exchanges with mobile network specific extensions, and the BSC, the dedicated mobile network specific control units.
	web.it.kth.se /~jiang/GSMintro/gsm-intro.html (7760 words)

	IEC: Universal Mobile Telecommunications System (UMTS) Protocols and Protocol Testing
		This enables network operators to enjoy the improved cost-efficiency of UMTS while protecting their 2G investments and reducing the risks of implementation.
		The Iu is the UTRAN interface between the radio network controller (RNC) and CN; the UTRAN interface between RNC and the packet-switched domain of the CN (Iu—PS) is used for PS data and the UTRAN interface between RNC and the circuit-switched domain of the CN (Iu—CS) is used for CS data.
		A reallocation of the SRNC functionality to the former DRNC is possible (serving radio network subsystem [SRNS] relocation).
	www.iec.org /online/tutorials/umts/topic02.html (1480 words)

	Breeze2000 Broadband Wireless System
		By using our base station subsystems you'll reduce your total cost of network ownership and provide a network growth path that allows you to pay as you grow, easily expanding your subscriber base and service offerings.
		As a complete CDMA2000 access network, the Pico BS Plus is flexible enough to interface with a distributed or centralized Trunk Gateway that connects to a legacy CDMA switch over E1/T1.
		The MSC is a small, rack-mounted unit that is centrally located in the network regardless of the voice traffic path and economically fits networks of all sizes up to a 100,000 subscribers.
	www.airlinx.com /products.cfm/product/3-5-613.htm (1119 words)

	Sintelsat GSM-GPRS/EDGE Wireless Network Solutions (Site not responding. Last check: 2007-10-19)
		Sintelsat has a strong background in the implementation of mobile communication networks using the GSM standard.
		We have successfully implemented GSM networks in Africa and in the Middle East for upto 50,000 subscribers.
		Sintelsat can implement end-to-end GSM network solutions depending on the standard specifications and network requirements optimized for present demand and future growth.
	www.sintelsat.com /en/services/serv_gsmnet.html (268 words)

	The speed demon: 3G telecommunications (Site not responding. Last check: 2007-10-19)
		The networking functions of the MSC depend upon the type of network to which it is connected and the type of service to be performed.
		The role of a SGSN is equivalent to that of MSC/VLR in a GSM network.
		It is responsible for controlling the resources associated with a number of Node B nodes, and for negotiating with the core network for aspects such as bearers and QoS.
	www-128.ibm.com /developerworks/wireless/library/wi-speed (5781 words)

	Dr. Dobb's \| Short Message Services \| April 9, 2002 (Site not responding. Last check: 2007-10-19)
		As Figure 1 illustrates, the two basic elements within SMS networks are the short message entity (SME) and the message center (MC).
		The SME is the addressable network endpoint, typically the source and destination of all SMS messages.
		The GSM mobile application part (MAP), defined in GSM 09.02, is used by the elements within the NSS portion of the GSM network (see Figure 5) to communicate with one another.
	www.ddj.com /184404807 (3017 words)

	Magazine
		The basestation subsystem (BSS), which is a collection of devices that support the switched network radio interface.
		The network and switching subsystem (NSS), which provides switching between the GSM subsystem and external networks along with the databases used for additional subscriber and mobility management.
		The interactions between the many components participating in the GSM networks is based on the general concepts of layered protocols.
	www.commsdesign.com /main/art9707.htm (1962 words)

	JAWWAL - More About GSM
		The GSM technical specifications define the different entities that form the GSM network by defining their functions and interface requirements.
		BTS corresponds to the transceivers and antennas used in each cell of the network.
		According to the GSM World Association: Much investigation and research has been undertaken into the subject of possible interference to electronic devices and the possibility of adverse health effects relating to the radio signals produced by mobile phones and base stations.
	www.myjawwal.com /GSM/defaulte.asp (485 words)

	Agilent \| Wireless \| Wireless Dictionary
		A node is often a device on the network that can process a transmission or forward it to anogther node.
		Node B (also called the base station controller or radio base station) provides the gateway between the handset/RF interface and the radio network controller via the Iub interface.
		A figure of merit for receivers and preamplifiers representing the amount of excess noise added to the signal by the amplifier or receiving system itself.
	wireless.agilent.com /dictionary/n.html (303 words)

	Tektronix: Products > K1297-G20 Series Protocol Tester - GPRS Software: Introduction
		A combination of monitoring, simulation, and emulation functions, as well as capability of conformance and interoperability testing is provided, chiefly needed during design and installation/deployment of GPRS networks.
		GPRS network operators transmit ciphered data between GPRS terminals and the network more often then they previously have.
		By emulating MS and BSS, you'll be able to identify Network Switching Subsystem (SGSN, GGSN, HLR, PDN) problems quickly and easily.
	www.tek.com /site/ps/0,,2F-15362-INTRO_EN,00.html (1010 words)

	GSM Architecture
		When a mobile station roams into a new mobile services switching center (MSC) area, the visitor location register (VLR) connected to that MSC will request data about the mobile station from the HLR, reducing the need for interrogation of the home location register (HLR).
		A gateway mobile services switching center (GMSC) is a node used to interconnect two networks.
		The OSS is the functional entity from which the network operator monitors and controls the system.
	www.argospress.com /Resources/gsm/gsmarchit.htm (488 words)

	Remote pings and remote control - Network World
		The data is retrieved periodically by a custom script running under PingPlotter (yes, it now has a scripting subsystem) and the results are handled just like locally gathered data.
		The SBC Level 2 tech support wonk we talked to had us restart the DSL modem by unplugging it rather than just switching the thing off (they claim this is necessary to ensure that the device really does reset; sounds a little unlikely to us - what do you think?).
		We had done exactly this exercise several times over the past couple of weeks, but this time the gods of bits were paying attention, and we've had 24 hours of normal DSL service.
	www.networkworld.com /columnists/2005/090505gearhead.html (879 words)

	macosxhints.com - Network
		I'm guessing it's because, when you switch locations and a network port gets disabled, the operating system can inform the underlying network subsystem that this port is no longer available due to user intervention -- so all the resources that were coming through that port are gone as well.
		So there's no need for the network subsystem to wait for a time-out period to see if those resources will reappear, since it knows they won't.
		If, like me, you use Parallels Desktop a lot on for-pay access points, or otherwise locked-down networks, where adding an additional MAC address to the same wireless card might cause problems, then this hint is for you.
	www.macosxhints.com /index.php?topic=network (2162 words)

	[No title]
		Dena offered compact wireless network solution offers a host of benefits compared to investing in traditional wired or cellular infrastructure.
		The NIB is a fully integrated solution for small capacity requirements, combining both radio and switching capabilities in a cabinet that is not much larger than a standard PC tower.
		All GSM functionalities can be either incorporated in a single cabinet or housed in their own separate cabinets.
	www.denatec.com /page6.html (225 words)

	GSM MAP Training (Site not responding. Last check: 2007-10-19)
		The emphasis of the course put on the mobile application part (MAP) and the C7 protocols that are required to support it.
		MAP provides core cellular network functionality - for example the functionality to route calls to and from mobile subscriber or messaging be it Short Message Service (SMS), Enhanced Messaging Service (EMS) or Multimedia Messaging Service (MMS).
		Those requiring a general outline of the Network Switching Subsystem (NSS) and the signalling protocols that operate over its interfaces.
	www.c7.com /ss7/2day_gsm_map_course_tl.htm (624 words)

	Symmetricom : Glossary of Terms
		A Network Operations Center monitors and manages a network's performance.
		Network Time Protocol provides a reliable way of transmitting and receiving time over TCP/IP networks and is useful for synchronizing the internal clock of computers to a common time source.
		A generic concept that depicts the way of distributing a common time and/or frequency to all elements in a network.
	www.symmetricom.com /support/glossary.aspx?id=n (213 words)

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