hiq9100 9200single screen

s

hiQ 9100 / hiQ 9200 Signaling Gateway, Media Gateway Controller,

Call Feature Server

Voice-Data Intelligence Across Networks . . . . . . . . . . . . . . . . 4

High-PerformanceMulti-Processor Platform . . . . . . . . . . 8

Provisioning of Voice Features to Multimedia Users . . . . 12

Converging Worlds: Voice & Data Networks . . . . . . . . . . 16

Technical Data . . . . . . . . . . . . . . . . . 28

Abbreviations . . . . . . . . . . . . . . . . . . 30

Contents

SURPASS carries the booming datanetworking segment beyond its limits inorder to meet the challenges of convergedvoice and data communications.

SURPASS introduces a new network archi-tecture for merging the advantages of apacket-oriented, multimedia-capable datanetwork with the complete voice intelligenceof traditional real-time networks.

At the core of this architecture the SURPASS hiQ performs voice call and fea-ture control and, with its powerful signalingcapabilities, provides the interconnectionto various networks.

SURPASS hiQ also controls gateway productsat the edge of the data network, the SiemensSURPASS hiG family of media gateways.

SURPASS hiA forms a shell around apacket-oriented core network, offeringmulti-service access capabilities. SURPASShiA combines voice, xDSL and enterprisedata access with media gateway functions.

The SURPASS hiQ 9100/9200 combines inthis scenario the feature-rich voice networkswith the flexible IP networks. It is thehighly reliable central control for the con-version of circuit-oriented voice streamsinto packet-oriented data streams (and viceversa) and for feature provisioning.

The SURPASS hiQ 9100/9200 applies the network intelligence to all media gateways for the intercon-

nection of the voice world with the IP world. The SURPASS hiQ 9100 acts as the powerful centralized

control for voice and data access. It provides high-speed mediation between the different signaling systems

of the voice world and the signaling protocols in the IP world.The SURPASS hiQ 9200 can also support a wide range

of valuable and existing voice features.This enables a carrier grade service package to be offered to multimedia users

connected to SURPASS.

Signaling Gateway

The SURPASS hiQ 9100/9200 Sig-naling Gateway performs the medi-ation between SS7 signaling in thePSTN/ISDN, INAP signaling in theIntelligent Network (IN) and H.323signaling in the data network.

Media Gateway Controller

The SURPASS hiQ 9100/9200 MediaGateway Controller performs themanagement of the Media Gatewaysbetween the voice and data net-works.

The Media Gateway Controller inter-faces the SURPASS hiQ 9100/9200to the IP network via Ethernet. TheMedia Gateway Controller and themedia gateways communicate viathe Media Gateway Control Protocol(MGCP).

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Overview

Voice-Data Intelligence Across Networks

Overview

With the SURPASS hiQ9100/9200 the functions• Signaling Gateway and• Media Gateway Con-

trollerare available.With the SURPASS hiQ9200 the function• Call Feature Serveris provided additionally.

Functions Call Feature Server

The SURPASS hiQ 9200 Call FeatureServer enables carrier grade voiceservices to be offered to multimediausers. The following revenue-gen-erating feature packages are sup-ported:

– multimedia user basic package

– multimedia user premium package

– IP CENTREX basic package

– IP CENTREX premium package

Management

The SURPASS hiQ 9100/9200 is in-tegrated in the SURPASS manage-ment concept of NetManager. Allmanagement functions can thus beperformed by a single centralizedentity.

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SURPASS hiQ 9100/9200 uses the following main protocol stacks:

SS7 Worldwide standard for common channel signaling systems.

MGCP The Media Gateway Controller Protocol as described in RFC 2705 is used to centrally controlvoice over data gateways and network access servers.The protocol standardization ensuresmulti-vendor interoperability.

H.323 The ITU-T H.323 series of recommendations is a set of signaling protocols for the support ofvoice or multimedia communication within a packet-based network (e.g. IP networks).Theycover the protocols necessary for operation and for interconnection with circuit-switched networks.

H.323+ In order to make analog, ISDN and CENTREX subscriber features available to multimedia users, Siemens’ SURPASS provides the enhanced future-proof H.323+ protocol.

RADIUS Remote authorization dial-in user service has become generally accepted throughout the world as the standardized protocol for Internet access control.

Interfaces

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FunctionsFunctions

High-PerformanceMulti-Processor Platform

The SURPASS hiQ 9100/9200 is based on a high-performance multi-processor platform. The multi-processor platform offers maximum scalability and reliability.

The SURPASS hiQ 9100consists of three functionalunits:• SS7 Signaling Gateway• Packet Control Unit

(PCU)• Call Control Subsystem

The SURPASS hiQ 9200consists of the same func-tional units, complementedwith software fulfillingthe following functions:• Call Feature Server

which provides carriergrade voice features

• H.323+ protocol stackfor signaling

Architecture

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SS7 Signaling Gateway

The SS7 Signaling Gateway interfacesthe SURPASS hiQ 9100/9200 to theSS7 network of the PSTN/ISDN andprocesses the SS7 protocol stackincluding SS7 message routing andsignaling network management.The SS7 Signaling Gateway isbased on the powerful SS7 controlhardware: the Signaling SystemNetwork Control (SSNC).

The SSNC has a modular architec-ture in which the various real-time-critical functions for the processingof signaling messages are distributedover a number of main processors(MP).The MPs are linked by a state-of-the-art ATM switching fabric.Thismakes the SSNC a powerful hard-ware platform with flexible expansionoptions.

The SSNC supports up to 1500 sig-naling links. It provides a dynamicmessage throughput of up to200,000 message signaling units(MSU) per second. As signalingrelay point the SSNC can perform40,000 global title translations(GTT) per second.

The SSNC can be scaled up to 50MPs. These processors handle thefollowing functions:

– signaling link termination(MP:SLT, up to 47 MPs)

– signaling manager(MP:SM, one MP)

– operation, administration andmaintenance (MP:OAM, one MP)

– statistics support (MP:STATS, one MP)

The MP:SLTs handle dynamically rel-evant functions such as MTP level 2and level 3 message handling andsignaling connection control part(SCCP) global title translation.

The MP:SM is responsible for theSS7 signaling network manage-ment. It provides for MTP level 3network management and SCCPbroadcast.

The MP:OAM supports all functionsrelevant to operation, administrationand maintenance.

The MP:STATS collects statisticmeasurement data.

The SSNC line interface cards (LIC)provide the interface to the SS7 sig-naling network in the voice networks.In order to support the 64 kbit/sand 56 kbit/s time slots for PCM30or PCM24 as well as 2 Mbit/s and1.5 Mbit/s high-speed signaling links,up to 50 LIC pairs (for 1:1 redundancy)with E1/T1 lines can be configured.

The various MPs and the line interfacecards are interconnected via theATM switching fabric which managesthe internal high-speed data transport.

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Packet Control Unit

The Media Gateway Controllerfunction is performed by the PacketControl Unit (PCU). The PCU con-sists of an engineerable number ofMedia Gateway Interface (MGI)modules, which can be fully redun-dant. The number of MGI modulescan be configured according to per-formance needs. For the exchange ofmessages with the SURPASS hiGMedia Gateways the MGI modulesare connected to the IP network viaEthernet switch or router.The MGIscommunicate with the groupprocessors (GP) of the Call ControlSubsystem via a direct GP bus in-terface. The message protocol be-tween the group processors and thePacket Control Unit is performed bythe Media Control User Interface.The messages from the Call ControlSubsystem are translated intoMGCP messages and sent to theSURPASS hiG Media Gateway (e.g.to set up or clear down connectionson a trunk port of the SURPASShiG Media Gateway). Conversely,MGCP messages from a SURPASShiG Media Gateway (e.g. acknowl-edgements and status messages)are mapped to the Media ControlUser Interface and sent to the MGCPuser part of a control process.

For the SURPASS hiQ 9200 CallFeature Server the Packet ControlUnit will be complemented withadditional software fulfilling theH.323 protocol stack. The H.323protocol stack supports signaling forVoIP services. A proprietary enhance-ment to the H.323 standard, knownas H.323+, supports the provisioningof carrier grade supplementaryservices including IP CENTREX.

The H.323+ stack is used to support:

– signaling to IP terminals / users

– voice features

– IP terminal / user interworkingwith PSTN/ISDN

– SURPASS hiQ 20 Registrationand Routing Server functions

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Call Control Subsystem

The Call Control Subsystem performscentral control tasks for all functionsimplemented in the SURPASS hiQ9100/9200. It is responsible for han-dling voice signaling with thePSTN/ISDN, performs call control,voice service and trunk feature pro-cessing, number translation andcall routing, interworking with theIntelligent Network (IN), accountingand generation of call detail records.It communicates with both the SS7Signaling Gateway and the PacketControl Unit, where the relevantprotocol stacks and network-specificfunctions of the SS7 and the IP net-work are processed.

The Call Control Subsystem con-sists of the following components:

– coordination processors (MCP,CP1 ... CP10)

– group processor (GP1 ... GPn)

– internal communication network

The coordination processors formthe core of the Call Control Sub-system. This core consists of onemaster call processor (MCP) moduleand up to 10 call processor (CP) mod-ules.They are able to perform up to4 million busy hour call attempts(BHCA).

A scalable array of group processors(GP) handles the whole range ofsignaling protocols for voice traffic.The parallel hardware architectureof the group processors provides avirtually unlimited performance re-serve and also guarantees the su-perior reliability and stability of thesystem even under massive networkoverload conditions.

Each group processor controls anengineerable number of mediagateway trunk ports. The numbercan be flexibly assigned in order toadapt to different traffic patterns,e.g. low call rates of dial-in RAStraffic or high call rates for VoIP.

Up to 8 group processors can runon top of the same hardware modulein order to greatly improve density.

A high-performance internal com-munication network routes mes-sages between the coordinationand group processors as well asmessages to/from the SS7 SignalingGateway.

For the SURPASS hiQ 9200 CallFeature Server the Call ControlSubsystem is complemented bysoftware which supports a widerange of carrier grade voice features.

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Functions

The SURPASS hiQ 9200 allows un-limited communication from

– Phone-to-PC

– PC-to-Phone

– PC-to-PC

The SURPASS hiQ 9200 makes awide range of voice features avail-able to multimedia users. The fol-lowing revenue-generating featurepackages are supported:

– multimedia user basic package

– multimedia user premium package

– IP CENTREX basic package

– IP CENTREX premium package

The multimedia user basic pack-age contains many powerful fea-tures, e.g. Calling Line IdentificationPresentation (CLIP).

The multimedia user premiumpackage contains the basic fea-tures as well as features for whichmedia handling is supported, e.g.Call Forwarding.

Provisioning of Voice Features to

Multimedia Users

Features

Today’s telephony is more than making a call.The subscribers are accustomed to using additional

features which provide information about the partner (number or name), features which allow

them to handle a second call, to forward or reroute or transfer calls to other destinations, to

increase the accessibility, and much more. Everybody wants to have such useful features even for VoIP calls.

The SURPASS hiQ 9200 Call Feature Server provides voice features to multimedia users. Additionally, the Call

Feature Server is open for all the new communication features emerging in the IP world.

The IP CENTREX basic packagecontains features for businessusers. Like PSTN/ISDN CENTREXsubscribers, IP CENTREX users aremembers of their CENTREX groupand can establish intercom callsfrom any IP location they are con-nected to (e.g. at the hotel or air-port).

The IP CENTREX premium pack-age extends the opportunities ofthe IP CENTREX basic package. AnIP CENTREX user has access to allthe necessary carrier grade voicefeatures, e.g. Call Pick-up.

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Feature Multimedia user IP CENTREX userBasic Premium Basic Premium

Basic ServicesAbbreviated Dialling, Individual List t t t tEmergency Call Service t t t tFixed Destination Call t t t tGeneral Facility Reset t t t tGeneral Reset of Screening List Data t t t tKeyword Modification t t t tPreference Category During Catastrophe t t t tUser Emergency Override t t t tTelephony t t t tUser Sub-addressing (SUB) t t t tUser-to-User Signaling Service (UUS 1-3) t t t tAbbreviated Dialling, Shared List t tCENTREX Group Size t tDirect Inward Dialling (DID) t tDirect Outward Dialling (DOD) t tDirect Public Network Access for 'Mini Groups' t tIP CENTREX Dialling Plan t tLocation Dialling t tModification of the Intercom Number t t

Call IndicationCall Waiting, Terminating t t t tCalling Line Identification Presentation (CLIP) t t t tCalling Line Identification Restriction (CLIR) t t t tConnected Line Identification Presentation (COLP) t t t tConnected Line Identification Restriction (COLR) t t t tMessage Waiting Indication (MWI) for Mailbox Services t t t tCall Waiting, Dial t tCall Waiting, Incoming Only t tCall Waiting, Originating t tCalling Name Identification Presentation t tCalling Name Identification Restriction t tCamp on Indication t tConnected Name Identification Presentation t tConnected Name Identification Restriction t tDistinctive Ringing t t

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Call RestrictionAnonymous Call Rejection (ACR) t t t tCall Barring Incoming and Outgoing t t t tClosed User Groups t t t tRejection of Forwarded Calls t t t tRemote Control of Outgoing Restrictions t t t tSelective Barring of Destinations t t t tSelective Call Acceptance / Call Rejection t t t tService Restriction in the Outgoing Direction t t t tCall Restriction, Fully t tCall Restriction, Semi t tOverride of Traffic Restrictions t tSimulated Facility Group t tCall CompletionCall Connection to Mail Server t t t tCompletion of Calls on No Reply (CCNR) t t t tCompletion of Calls to Busy Subscribers (CCBS) t t t t

Connection SecurityAlarm Call Service t t t tDo Not Disturb t t t tMalicious Call Identification (MCID) t t t tReverse Charge Call Rejection t t t t

AccountingAdvice of Accounting t t t tMeter Observation (MOB) t t t tMeter Observation, Preventive (PMOP) t t t tNo Charge Calls t t t tPrinted Record on Duration and Charge of Calls t t t tReverse Charging at Setup Time (REV-S) t t t tAccounting via Flat Rate t tAccounting via Pulse Metering t tAutomatic Message Accounting (AMA) t tCENTREX Group Specific Zoning t tTraffic Measurement for CENTREX t t

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CENTREX NetworkingFeature Transparency for Network Wide CENTREX t tSubgroups within a CENTREX Business Group t t

Call ForwardingCall Deflection (CD) t tCall Forwarding t tCall Forwarding Announcement t tCall Forwarding, Controlled by Network Operator Only t tCall Forwarding to Mail Server t tCourtesy Call for Call Forwarding t tMultiple Simultaneous Call Forwarding t tParallel Ringing t tRemote Control of Call Forwarding t tSelective Call Forwarding t tCall Forwarding to Mail Server for IP CENTREX tCall Forwarding, Incoming Only tCall Forwarding, within Centrex Group Only tDefault Call Forwarding t

Call HandlingCall Hold X XCall Transfer All Calls X XCall Transfer in Ringing State X XImproved Paging X XMusic on Hold X XSecretarial Intercept (A-party Call Transfer) X XThree Party Service X XCall Transfer into Queue XCall Transfer to Attendant XCall Transfer, Restricted XDialog Based Feature Subscription XDirect Call Pick Up XGroup Call Pick Up XGroup Specific Interception of Calls XInhibit Attendant Barge-In XSecond Dial Tone XThree Way Calling, Add on Consultation Hold, Incoming Only X

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The future telecommunication networks combine the high-quality and the feature-rich real-time

services of the voice networks with the cost-efficient and flexible data services of the IP networks.

The SURPASS hiQ 9100/9200 Signaling Gateway, Media Gateway Controller and Call Feature Server

control voice and data access and provide a wide range of voice features and IP services to multimedia users

(H.323 users).

• Carrier-Class Interconnection• Virtual Trunking• Voice Online• IP CENTREX

Solutions

Converging Worlds:Voice & Data Networks

Solutions

Solutions

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... for the service provider• Easy adaptation to national SS7 protocol variants (re-use of already

available and reliable national ISUP protocols)

• Cost savings due to SS7 interconnection tariffs instead of pri-mary rate interface (PRI) tariffs

• One SURPASS hiQ 9100/9200 can control a scalable range of SURPASS hiG 1000 Media Gateways

... for the user• Cost savings without functional restrictions

Benefits

Carrier-Class InterconnectionThe PC user residing in a PSTN/ISDN starts the dial-in procedure tohis favorite Internet service provider.The dial-in connection is routed via aPSTN/ISDN gateway network nodeto a SURPASS hiG 1000, which isconnected by circuit-switched trunks.While the PSTN/ISDN gateway net-work node treats the circuit-switchedtrunks as common interconnectionSS7 trunks, the SURPASS hiG 1000only needs a very small signalingfunctionality for the dial-in procedure.The signaling protocol used is theMGCP (media gateway controllerprotocol) as described in RFC 2705.

The SURPASS hiQ 9100/9200 ter-minates the SS7 signaling links andgenerates the required MGCPcommands. On receiving theseMGCP commands the SURPASShiG 1000 starts the normal Internetaccess procedures such as:

– seizure of modem port

– treatment of the PPP connection

– communication with the SURPASS hiQ 10

– provision of a dynamic InternetIP address

How it worksCarrier-Class Interconnection –Trunk Interfaces and SS7 Signa-ling Minimizes InterconnectionFees and Increases Margins

Carrier-Class Interconnection pro-vides a cost-efficient interface fromPSTN/ISDN via Remote AccessServer (RAS) media gateways to theservice provider networks. For thissolution the following SURPASSproducts are available:

SURPASS hiG 1000 RAS and VoIP Media Gateway

The SURPASS hiG 1000 is the highlyreliable border element betweencircuit-switched networks and theIP networks. It supports both theRAS functionality and the VoIPfunctionality. The SURPASS hiG1000 is controlled by the SURPASShiQ 9100/9200 via MGCP.

SURPASS hiQ 9100/9200Signaling Gateway, Media GatewayController

The SURPASS hiQ 9100/9200 pro-vides signaling translation fromSS7 (ISUP) to MGCP, media gatewaycontrol and call control.

SURPASS hiQ 10 Authentication, Authorization andAccounting (AAA) Server

The SURPASS hiQ 10 provides theauthentication, authorization andaccounting functionality for dial-intraffic and communicates with theMedia Gateways via remote authen-tication dial-in user service (RADIUS)protocol.

SURPASS hiQ 30Directory Server

The SURPASS hiQ 30 containscustomer information such as aliasnames, user rights, etc. The SUR-PASS hiQ 30 is accessed by theSURPASS hiQ 10 via lightweightdirectory access protocol (LDAP).

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Virtual Trunking – Phone-to-PhoneCommunication Bridged by VoIP

The term Virtual Trunking is used forphone-to-phone calls routed via thedata network. A highly economicaland state-of-the-art way to offloadthe PSTN/ISDN is to route some ofthe voice traffic via the data network.

Different scenarios are possible:

– Virtual Trunking with in the ownnetwork

– Virtual Trunking with intercarrierconnection via two IP networks

For these scenarios the followingSURPASS products are available:

SURPASS hiG 1000RAS and VoIP Media Gateway

The SURPASS hiG 1000 is the highlyreliable border element betweencircuit switched networks and the IPnetwork. It supports both the RASfunctionality and the VoIP function-ality.The SURPASS hiG 1000 is con-trolled from the SURPASS hiQ9100/9200 by MGCP.

SURPASS hiQ 9100/9200Signaling Gateway, Media GatewayController

The SURPASS hiQ 9100/9200 pro-vides signaling translation from SS7(ISUP) to MGCP, media gatewaycontrol and call control.

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Virtual Trunking within the own network

The IP carrier owns the PSTN/ISDNnetwork and the data network.Thecalling subscriber in a PSTN/ISDNstarts the dialing procedure towardsanother PSTN/ISDN subscriber. Thecall setup is routed via a PSTN/ISDNgateway network node to a SUR-PASS hiG 1000 VoIP ingress MediaGateway, which is controlled by theSURPASS hiQ 9100/9200.

The PSTN/ISDN network node usesthe SS7 signaling interface to com-municate with the SURPASS hiQ9100/9200 while the SURPASS hiG1000 is controlled by the MGCP in-terface.

The VoIP call setup in this scenariois terminated by another SURPASShiG 1000 VoIP egress Media Gate-way, which is controlled by thesame SURPASS hiQ 9100/9200.

How it works

... for the IP carrier• Can use the existing IP infrastructure to act as a voice carrier

• One SURPASS hiQ 9100/9200 can control a scalable range of SURPASS hiG 1000

• Cost efficient trunking by using IP backbone

• Investment savings in the access area of the traditional network

... for the user• Can establish cost-saving VoIP calls like normal carrier-routed calls

• Sees no difference to a normal voice call in the PSTN/ISDN (quality of service-dependent)

Benefits

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... for the IP carrier• Interoperability with other carriers via IP networks

• Cost-efficient trunking by using the IP backbone

• Investment savings in the access area of the traditional network

... for the user• Can establish cost-saving VoIP calls like normal carrier-routed calls

• Sees no difference to a normal voice call in the PSTN/ISDN (quality of service-dependent)

Benefits

Virtual Trunkingwith intercarrier connection via two IP networks

Both carriers own the PSTN/ISDNnetwork and the data network.Thecalling subscriber in a PSTN/ISDNstarts the dialing procedure towardsthe subscriber in the other PSTN/ISDN network. The call setup isrouted via a PSTN/ISDN gatewaynetwork node to a SURPASS hiG1000 VoIP ingress Media Gateway,which is controlled by the SURPASShiQ 9100/9200 of the caller’s carrier.

The PSTN/ISDN network node usesthe SS7 signaling interface tocommunicate with the SURPASShiQ 9100/9200, while the SURPASShiG 1000 is controlled by the MGCPinterface.

The VoIP call setup in this scenariois terminated by another SURPASShiG 1000 egress Media Gateway,which is controlled by the SURPASShiQ 9100/9200 of the called party’scarrier.The call setup messages areforwarded between the two SUR-PASS hiQ 9100/9200 via SS7 usingBearer Independent Call Control(BICC) ISUP.

How it works

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Voice Online – Unlimited VoiceServices for Multimedia Users

Voice Online provides unlimited com-munication from Phone-to-PC, PC-to-Phone and PC-to-PC. It permitsinterconnection of PSTN / ISDN tele-phone subscribers or dial-in userswith multimedia users or of multi-media users with each other. For thissolution the following SURPASSproducts are available:


The SURPASS hiG 1000 is the highlyreliable border element betweencircuit-switched networks and theIP network. It supports both the RASfunctionality and the VoIP function-ality.The SURPASS hiG 1000 is con-trolled from the SURPASS hiQ 9200by MGCP.

SURPASS hiQ 9200Signaling Gateway, Media GatewayController, Call Feature Server

The SURPASS hiQ 9200 providessignaling translation from SS7 (ISUP)to MGCP, media gateway controland call control. The Call FeatureServer function makes a wide rangeof voice features available to multi-media users.

SURPASS hiQ 20 Registration and Routing Server

The SURPASS hiQ 20 acts as gate-keeper in this scenario. It ensuresthat VoIP services can only be usedby the authorized users, checks theH.323 user profiles from the SUR-PASS hiQ 30 and keeps track of theH.323 users who are registered.

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The SURPASS hiQ 30 containscustomer information such as aliasnames, user rights, etc. The SUR-PASS hiQ 30 is accessed by theSURPASS hiQ 20 via lightweightdirectory access protocol (LDAP).

Siemens Software clientH.323 / H.323+ PC client

The multimedia user can set up callsto subscribers in the PSTN/ISDN orto other multimedia users via a stan-dard PC client software. The usageof the many features provided bythe Call Feature Server is supportedby the specially designed SiemensPC client.

... for the service provider• All H.323 call control is concentrated in the SURPASS hiQ 9200

and not distributed over the whole network

• One SURPASS hiQ 9200 can control a scalable range of SURPASShiG 1000

• Easy adaptation to national SS7 protocol variants (re-use of already available and reliable national ISUP protocols)

• Cost savings due to SS7 interconnection tariffs instead of primary rate interface (PRI) tariffs

• Service provisioning independent of network borders

• Investment savings

... for the user• PC-to-Phone calls are possible

• Phone-to-PC calls are possible

• Passing-on of cost savings from the service provider to the subscriber/user

• Wide range of analog/ISDN/CENTREX subscriber features available

• Accessible from anywhere in the net

Benefits

Voice Online:Phone-to-PC configuration

The call can just as well be initiatedby the remote PSTN/ISDN sub-scriber. The fact that the calledpartner is a multimedia user mustnot necessarily be known to thecalling subscriber. Based on dialedprefix digits or by administeredpreselection, the call is routed via aPSTN/ISDN gateway network nodeto a SURPASS hiG 1000, which isconnected by circuit switchedtrunks. The PSTN/ISDN networknode uses the SS7 signaling inter-face to communicate with theSURPASS hiQ 9200, while theSURPASS hiG 1000 is controlled bythe MGCP interface.

The SURPASS hiQ 9200 sends anH.323 based request to the SUR-PASS hiQ 20 asking for addressresolution to obtain the IP addressof the multimedia user. On the basisof this information the SURPASShiQ 9200 can set up an H.323 con-nection to the multimedia user.TheCODEC negotiation is handled be-tween the SURPASS hiQ 9200 andthe multimedia user (H.323 end-point, e.g.).The SURPASS hiQ 9200acts as a relay point to propagatethe necessary information elementsbetween these two endpoints.After successful H.323 call setupthe SURPASS hiG 1000 converts themedia stream between voice net-work and IP network.

How it works

Voice Online:PC-to-Phone configuration

The calling multimedia user startsthe dialing procedure towards aPSTN/ISDN subscriber. The SUR-PASS hiQ 20 is contacted toauthenticate the calling VoIP userand to check whether the caller isallowed to make outgoing calls intothe PSTN/ISDN. If the SURPASShiQ 20 query result is positive, theSURPASS hiQ 9200 receives theH.323 call setup request and causesthe SURPASS hiG 1000 to seize atrunk port to the PSTN/ISDN gate-way network node and send out theappropriate SS7 message.With the SURPASS hiQ 9200 thesubscriber feature packages providedare available to the multimedia user.

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... for the service provider• All H.323 call control is concentrated in the SURPASS hiQ 9200

... for the user• PC-to-PC calls are possible

• Wide range of analog/ISDN/CENTREX subscriber features available

• Accessible from anywhere in the net

Benefits

Voice Online:PC-to-PC configuration

The multimedia users must have anactive Internet connection. Whenthe H.323/H.323+ terminal soft-ware is started (e.g. Siemens soft-ware client), multimedia users areautomatically registered with theSURPASS hiQ 20. After authenti-cation, users can establish con-nections themselves and can bereached by other H.323 users (orsubscribers of the PSTN/ISDN). Toset up a connection the user en-ters or clicks on the required IP ad-dress or alias name.The SURPASS

hiQ 20 identifies the called user’sdirectory number and forwards theconnection request to the SURPASShiQ 9200. In the SURPASS hiQ 9200the user’s feature profile is stored.The SURPASS hiQ 9200 controlsthe subsequent connection setup.The SURPASS hiQ 20 determineswhether the desired user is avail-able. If so, the call request is indi-cated to the called user via H.323.The voice connection is establisheddirectly via the data network. TheSURPASS hiQ 9200 provides therequested features for the multi-media user.

How it works

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TeleworkerDue to the fact that home workingis becoming increasingly popularand because data and voice accessare equally important to the homeworker, IP- based home worker ac-cess to IP CENTREX is of great value.

Business inhouse communicationEstablished companies already usingGeoCENTREX can incorporate in-house IP-based extensions within agiven CENTREX group. New com-panies can base their communicationinfrastructure on IP CENTREX fromthe beginning.

IP CENTREX – All Features for theWorld of Business Communication

IP CENTREX combines all Voice On-line scenarios into one. Whether inthe office, at home or on the road, IPCENTREX provides the communi-cation convenience needed by busi-ness customers today. For businesscustomers the following additionalapplications will be provided:

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Roaming business subscriberAccess to the company´s home in-frastructure is achieved via wirelineor mobile dial-in to any Internet serv-ice provider network. The roamingis within an unlimited geographicalarea, e.g. countrywide or interna-tional.

For the IP CENTREX solution thefollowing SURPASS products areavailable:

SURPASS hiQ 20Registration and Routing Server

The SURPASS hiQ 20 acts as gate-keeper in this scenario. It ensuresthat VoIP services can only be usedby the authorized users, checks theH.323 user profiles from the SUR-PASS hiQ 30 and keeps track of theH.323 users who are registered.


The SURPASS hiQ 30 contains cus-tomer information such as aliasnames, user rights, etc. The SUR-PASS hiQ 30 is accessed via light-weight directory access protocol(LDAP).

Siemens Software clientH.323 / H.323+ PC client

The IP CENTREX user can set upcalls to subscribers in the PSTN/ISDN or to another IP CENTREXuser via a standard PC client soft-ware and already use the privatenumbering plan of CENTREX. Theuse of the many features providedby the Call Feature Server is sup-ported by the specially designedSiemens PC client.


The SURPASS hiG 1000 is thehighly reliable border element be-tween circuit-switched networksand the IP network. It supportsboth the RAS functionality and theVoIP functionality.The SURPASS hiG1000 is controlled from the SUR-PASS hiQ 9200 by MGCP.

SURPASS hiQ 9200Signaling Gateway, Media GatewayController, Call Feature Server

The SURPASS hiQ 9200 providessignaling translation from SS7 (ISUP)to MGCP, media gateway controland call control. The Call FeatureServer function makes a wide rangeof voice features available to multi-media users.

SURPASS hiQ 10Authentication, Authorization andAccounting (AAA) Server

The SURPASS hiQ 10 provides theauthentication, authorization andaccounting functionality for dial-intraffic and communicates with theMedia Gateways via remote au-thentication dial-in user service(RADIUS) protocol.

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Appendix

Technical Data

SURPASS hiQ 9100/9200 – Signaling Gateway, Media Gateway Controller

Interfaces

Interface to the IP network:

• Ethernet 10BaseT

Interface to the SS7 network:

• Channelized E1 for 64/56 kbit/s signaling links

• Channelized DS1 for 64/56 kbit/s signaling links

• E1-ATM for high-speed signaling links at 2 Mbit/s

• DS1-ATM for high-speed signaling links at 1.5 Mbit/s

Interface to network management:

• Ethernet 10/100BaseT

• X.25

Performance

• Call processing performance: up to 4 million busy hour call attempts (BHCA)

• Trunk ports controlled: up to 120,000 ports

• No. of simultaneously active calls: up to 120,000 calls

• No. of SS7 signaling links: up to 1500 links

• SS7 message throughput: up to 200,000 Message Signaling Units per second (MSU/s)

• SS7 global title translation: up to 40,000 GTT/s

Reliability

• Total system downtime: w 5.7 x 10 E-6

• Failure rate of hardware modules w 3% per year

29

SURPASS hiQ 9200 – Call Feature Server

Interfaces

• n x 10BaseT, for H.323 MGCP, and other IP-based protocols

Performance

• Number of administrable H.323 user: 250,000

• Number of parallel calls, PC-to-Phone: 5000 (future 10,000)

• Number of parallel calls, PC-to-PC: 2500 (future 5000)

• BHCA, PC-to-Phone: 180,000 (future 360,000)

• BHCA, PC-to-PC: 90,000 (future 180,000)

Appendix

Abbreviations

AAA authentication, authorization, accountingASN ATM switching networkATM asynchronous transfer modeBHCA busy hour call attemptsBICC bearer independent call controlCAP call processorCENTREX Central Office Exchange ServiceCODEC coder/decoderCP coordination processorFoIP fax over Internet protocolGP group processorGTT global title translationH.323 Internet signalingICN internal communication networkIN intelligent networkINAP IN application partIP Internet protocolISDN integrated services digital networkISUP ISDN user partITU International Telecommunications UnionLIC line interface cardLDAP lightweight directory access protocolLNP local number portabilityMCP master call processorMGCP media gateway controller protocolMGI media gateway interface

30

MP main processorMP:OAM main processor for operation,

administration and maintenanceMP:SLT main processor for signaling link terminationMP:SM main processor for signaling managementMP:STATS main processor for statistics supportMSU message signal unitMTP message transfer partPRI primary rate interfacePC personal computerPCM24 pulse code modulation system with

24 channelsPCM30 pulse code modulation system with

30 channelsPCU packet control unitPPP point-to-point protocolPSTN public switched telephone networkRADIUS remote authentication dial-in user serviceRAS remote access serverRFC request for commentsSCCP signaling connection control partSCP service control pointSS7 signaling system no. 7 SSNC signaling system network controlTDM time division multiplexVoIP voice over Internet protocolxDSL x digital subscriber line

31

COPYRIGHT© 2000 Siemens AGInformation and Communication NetworksICN WN CS PL D3Hofmannstr. 5181359 Munich, Germany

Order no. A30828-X8020-V302-1-7618Printed in the Federal Republic of GermanyS hiQ 9, V3

This publication is issued to provideinformation only and is not to form part ofany order or contract. The products and services described herein are subject to change and availability without notice.

Siemens Aktiengesellschaft

! Contact us!Visit our Website at http://www.siemens.com/surpass

or send us an e-mail to:[email protected] fax to: +49-89-722-38296

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