SOFTSWITCH
© October/2001 Trópico Sistemas e Telecomunicações da Amazônia Ltda. All rights reserved The information herein this material are subject to changes without previous notice.
Vectura SoftSwitch Introduction 2 OPT Architecture 3 Open Packet Telephony Model 3 Network Infra-structure 3 Call Control 4 Services 4 Convergente Network Structure 5 Main Features 6 Features 7 Tandem Switch (Class 4) Function 7 Local / Tandem Switch (Class 5 e 4) Function 7 Protocol Mediation 7 Billing in the AMA format 8 Remote Operation Interface 8 Services 9 Basic Services 9 Supplementary Services 10 Advanced Services 10 Hardware 11 Platform Architecture 11 Interconnection Modules 11 Other Platform Modules 11 Software 12 Software Features 12 Basic Softwares 12 High Scalability 12 Platform 13 Operation, Maintenance and Supervision 13 Friendly Communication 14 Distributed Control 14 Performance Analysis 14 Modular Architecture 14 Synchronization 14 Dimensioning 15 Redundancy 15 Summary of Technical Features 16 Terminal Types 16 Call Routing Features 16 Applications 16 Environmental Conditions 16 Primary Power Supply 16 Common Channel Signaling # 7 17 Billing 17 NGN Solutions 18 Vectura SoftSwitch 18 Vectura IP Access 18 Vectura Cable Access 18 Vectura Convergence Gateway 19 Vectura Edge Switch 19 Vectura ISP Easy Way 19 Vectura V-Services 19 Glossary of Services 20 Glossary of Abbreviations 26
NGN and solutions for convergent networks Network unification opens unlimited possibilities for new intelligent services, with the advantage of also being available to the heritage of networks. A single infrastructure being shared and serving as a substrate for the growth of a new, more flexible and faster network, able to provide better service to customers. At the same time, maintaining investments already put up and optimizing existing facilities to develop new sources of income.
Today, the headway gained in the development of protocols and data networks enables the conveyance of the assorted media with assured service quality. This is where the Vectura line's proposal comes in: the unification of networks and multiple services in the same infrastructure and data network. With the Vectura line, Trópico offers access and multi-service elements as efficient solutions to meet the new demands of voice, data and multimedia
communication, in keeping with the required speed and new services.
Vectura SoftSwitch is the controller of these networks, a strategic element able to guarantee the quality of calls between any telecommunications networks, regardless of the access technology adopted.
Voice, data and video, in a unified infrastructure
SOFTSWITCH
In tr o d u c ti o nSOFTSWITCH
Vectura SoftSwtich is the Vectura line's equipment which provides the unified control within next generation networks NGN. The technology enabling the efficient transport of multimedia information or, in other words, voice, audio, video and data integrated in a same network, with assured service quality. Based on the concept of open-packet telephony (OPT), the Vectura line contemplates open-standard, layer-structured architecture, providing transport, call control and provision of services, by distinct network elements.
CALL CONTROL LAYER DATA INFRASTRUCTURE LAYER
OPT ARCHITECTURE
OPEN/STANDARD INTERFACE O P T A rc h it e c tu re OPEN/STANDARD INTERFACEOpen Packet Telephony (OPT) Model
Network infrastructure
The OPT layered model provides multimedia services in a data network, integrated with today's networks, where the open and standardized interfaces assure the interoperability between the layers by which it is comprised: call control,
transport and services. Designed within this concept, the Vectura line equipment is applicable from the transport layer, passing through the control layer, and reaching the service layer.
In the transport layer are the media gateway and all the data-network infrastructure, such as the IP switchers and routers, which interact with the call-control layer by means of standard protocols, the MGCP (Media Gateway Control Protocol), the H.248 protocol (the ITU equivalent protocol), the H.323 (the legacy protocol from VoIP networks) and SIP
(Session Initiation Protocol).
For network infrastructures, Trópico provides switching exchanges with integrated gateways the Vectura Edge Switch and IP remote access cabinets Vectura IP Access, providing the same-point
convergence of subscriber-access and transmission technology
Services
The service layer controls services offered to users connected to the network, represented by Vectura V-Services. They are servers where intelligence for the provision of services, as well as user databases reside.
Services can be provided according to the model of intelligent network when interoperating with this legacy, according to multimedia network model H.323. Or, pursuant to the particular model of open-packet telephony, where servers use the standardized SIP (Session Initiation Protocol) and API (Application Program Interface). Transport layer elements, termed media servers, provide the media processing, such as, for example, the playback and recording of messages, text-to-speech conversion and voice recognition.
In the case of NGN, to add new services to the network, all needed is to add server applications, in a very simple manner. And for traditional telephony networks, interconnected to an IP network, the sharing of these services becomes perfectly feasible and secure, controlled by the Vectura SoftSwitch.
Vectura Line. Efficient transport of information
O P T A rc h it e c tu re
Complemeting the infrastructure solution, there is the Vectura Cable Access, a facility for CATV operators to provide telephony services; the Vectura ISP Easy Way function, which provides a deviation of Internet traffic and the Vectura Convergence Gateway, which provides the voice conversion to VoIP in class 4 applications.
The call control layer is responsible for establishing, supervising and releasing calls that travel within the IP network. It is the most strategic part of
convergent-network architecture, being the ideal spot for the access of new services and
interoperation with the legacy of other networks. The Vectura-line element that performs this layer's functions is the Vectura SoftSwitch, which is state-of-the-art in convergent-network call control. Call control
C o n ve rg en t N et w o rk S tr u ct u re
Convergent Network Structure
Multapplication Platform M a in F e a tu re s
The Vectura SoftSwitch is a multi-application platform for voice-data network convergence , conceived in a modular way, both in terms of both hardware and software components, offering great versatility, high reliability and guaranteed continuous
development.
Incorporated into the IP data network, the Vectura SoftSwitch performs the call processing functions peculiar to a telephone switch, but does not incorporate either the commutation functions, or the terminal modules. These functions are performed by
gateways outside the equipment, which communicate with this equipment through the IP network via MGCP , H.248 , H.323 and SIP protocols, and interface with the public network (PSTN) through the SS7, R2 or PRI signaling. The gateways interact, on one side with PSTN telephone switches via trunks and, on the other side,
SOFTSWITCH
with the IP data network, through which the voice in circuit mode is converted into Voice over IP (VoIP).
The possible configurations of the Vectura SoftSwitch allow applications such as the Tandem Switch (class 4), Tandem/Local Switch (class 4 and 5), Signaling Transfer Point STP, Service Access Point SAP and signaling gateways. All of these options are totally compatible with existing telecommunications network standard.
The Vectura SoftSwitch is implemented within a multiprocessor archictecture a distributed control and active load partitioning, smooth degradation under failure conditions, with independent signaling and synchronization. There is active redundancy with load partitioning in the signaling functions, synchronization distribution call processing, among others.
SOFTSWITCH A p p li c a ti o n s Applications
The following applications are foreseen in Vectura SoftSwitch
Tandem Switch (Class 4) Function
Vectura SoftSwitch Tandem (Class 4)
Vectura SoftSwitch Tandem/Local (Class 4/5) for tandem call control with origin/destination in end-points of the trunk gateway type.
for tandem call control with origin/destination in end-points of the trunk and residential gateway types.
The Vectura SoftSwitch may be configured to operate as a control element of switched calls in an IP network with a tandem function, where the Vectura SoftSwitch controls trunk gateways through the MGCP, H.248, H.323 or SIP protocols. The equipment capacity in this application is up to 5 million BHCA.
Local/Tandem Switch (Class 5 and 4) Function
Protocol Mediation
The Vectura SoftSwitch may also be configured to operate as a call control element of trunk gateways and residential gateways. In the case of residential gateways, they can be elements such as IADs (Integrated Access Devices), Cable Modems with voice, Vectura IP Access and Vectura Cable Access, where the users are connected directly to this equipment, whose service is provided by the Vectura SoftSwitch.
A convergent network requires gateways that operate with an H.323 protocol to connect to MGCP gateways, and the Vectura SoftSwitch enables calls between the user's equipment and service platforms based on both protocols. Through the mediation between MGCP/SS7 and H.323, the equipment is able to connect, supervise and conclude the call between both MGCP and H.323 gateways.
a n d a n d
SOFTSWITCH
Billing in the AMA format
The Vectura SoftSwitch allows for automatic billing in any of the mentioned applications, as well as the calls resulted form the mediation of any protocols, with high flexibility for call register service programming. It may be programmed so that it can use two formats for charging data: the standard 80-byte format or the AMA format. The billing function is introduced through independent modules, via usual plug-ins or FTP servers.
Remote Operation Interface
The Vectura SoftSwitch enables interface with networks based on TCP/IP protocols, allowing remote operators to access data and equipment files. The operation becomes more economical and safer and allows a centralized monitoring of all the installed equipment ( Vectura SoftSwitch and Trópico RA) through a SNMP
management platform or terminals based in command lines (CLI). A very useful resource
for the Telcos is the transfer of billing and multi-measurement files, as well as the use of a centralized operation environment, allowing management operation in a friendly way. Applications F e a tu re s
Available Services controled by Vectura SoftSwitch S e rv ic e s SOFTSWITCH Basic Services
The Vectura SoftSwitch controls calls and provides services for the following terminal types:
Analog subscriber (connected to residential gateway, Vectura IP Access and Vectura Cable Access):
- Virtual PABX (residential gateway, Vectura IP Access and Vectura Cable Access)
- Local and/or trunk public telephone,using coin or card ( conected to Vectura IP Access or Vectura Cable Access)
- Community public telephone (connected to Vectura IP Access or Vectura Cable Access) - Semi-public telephone (connected to Vectura IP
Access or Vectura Cable Access)
The Vectura SoftSwitch offers the following
additional services to the subscribers connected to residential gateways, Vectura IP Access and Vectura Cable Access:
- ISDN Basic Access (connected to Vectura IP Access and Vectura Cable Access)
- Abbreviated dialing - Hot line
- Warm line
- Automatic wakeup service - Originated call restriction
- Restriction control of originated calls - Transfer to operator
- Temporary transfer
- Call forwarding on no answer - Call forwarding on busy - Do not disturb
- Call waiting - Line priority
- Detailed recording of originated calls - Detailed recording for charging
- Attention to consult with or without transfer - Three way calling
- Reverse billing - Malicious call
- Call with caller identification - Recorded call
SOFTSWITCH
ISDN Supplementary Services
The Vectura SoftSwitch also makes available the following additional services to subscribers
connected to ISDN lines via Vectura IP Access and Vectura Cable Access:
-Terminal Sub-addressing
-Caller Identification Presentation
-Caller Identification Presentation Restriction -Terminal Portability
-Multiple Subscriber Number -Call hold
-Call waiting -Search lines
-User to user signaling -Direct Extension Dialing
-Connected Line Identification Presentation -Connected Line Identification Restriction -Closed user group
-Automatic call forwarding -Call forwarding on busy -Call forwarding on no answer -Malicious call tracing
Advanced Services
The Vectura SoftSwitch, being the call control layer element of the Open Packet Telephony model, interoperates with the execution services platforms via standard interfaces (H.323, MGCP and SIP), enabling the implementation of solutions in an open way. It allows the natural implementation of
improvements, interoperating with any access and switching technologies. The results are unlimited possibilities for advanced services, or V-Services that provide advantages to the end-user and, consequently, build loyalty.
Some of these advanced services are:
-Prepaid -Voice Mail:
-Unified Messaging: -Call Screening:
-One Person/One Number -Click to Talk
-Internet Second Line (Internet Call Waiting) -0800 Service
-0300/0900 Service -Voice Portals
-Universal Access Number -VPN Virtual Private Network Available Services controled by Vectura SoftSwitch
S e rv ic e s
Platform Architecture H a rd w a re SOFTSWITCH Platform Architecture
The Vectura SoftSwitch architecture is based on a high standardization, both in constructive blocks and interfaces that interconnect them. As a result, you get a reduced number of printed-circuit board types. As examples, there are only one type of processor module for calls processing, control and O&M. The structure for signaling and synchronization is
standardized in a single interface type.
I
Signaling Module, which composes the local network locator with interconnects the up to 1,024 processors that control the SoftSwitch.
Synchronization Module, which generates clock signals with high stability for all equipment as well as the external synchronization with the SS7 network.
Terminal Module, whose terminals will be connected over it and level 2 functions from SS7 signaling
Operation and Maintenance Module, which incorporates mass memory units and interfaces with input and output peripherals as well as the operation and maintenance management software of the switch.
Application module whose processor provides high-performance SW functions, processing the calls and protocols
Interworking Module- based on processor and business operating system that enables outsourcing HW/SW introduction to Vectura SoftSwitch platform.
Module to access TCP/IP for the Vectura SoftSwitch management and operation purpose.
nterconnection modules MZ -
MS -
Other Platform Modules TM -
MO -
MA -
MF -
Software Features S o ft w a re SOFTSWITCH
The Vectura SoftSwitch software was written at a high level language and modularly structured according to the Implementation Block (BI) software concept with the objective of taking the most
advantage of the reutilization and modularity, allowing flexibility and quality assurance.
The BI software is designed to perform its function, regardless the processor it will operate with. This modularity makes the software development and maintenance easy as well as it allows great flexibility during the switch configuration. The Vectura
SoftSwitch processors are loaded with BI subsets according to each functionality needs. There is great flexibility for configuration in order to meet the desired applications.
As the Telcos and the user needs change so fast, the Vectura SoftSwitch software was structured and developed in such a way to allow an easy
introduction of new requests, in an additional way, affecting as little as possible the functions already in operation. Besides , it shows high independence in relation to the hardware, making compatibility with developing versions of the product possible.
The internal Vectura SoftSwitch processor network is integrated with a software layer, which provides an "easy to use" execution environment for the applications, meeting the reliability requirements, real time control, competitive execution and the distributed processing.
Hardware Independence
Basic Software
High Scalability
The Vectura SoftSwitch processor network is able to reach up to 1,024 processors, internal to the network, allowing a big scalable framework to be implemented.
To meet the control requirements in real time, the platform has its own communication protocol, which assures high availability and speed, allowing the processors to behave as a single and big system with high reliability.
Vectura SoftSwitch Platform Features P la tf o rm SOFTSWITCH
Operation, Maintenance and Supervision
The separation of operation, maintenance and supervision activities (OMS) and call processing functions allows Vectura SoftSwitch to calculate data, issue reports, and signal and store failures without damaging call processing capacity. This process is provided through TCP/IP protocol.. Consequently, Telcos will be able to use, as a transport, its own business network or any IP
network to be implemented, and perform operational activities via the Vectura SoftSwitch.
By using this interface, the Vectura SoftSwitch makes access available:
- Man/Machine Interface (MMI); - Report collection;
- File transfer with traffic/performance information, CDRs, multiple measurement counters, failure history, etc. by means of a FTP server;
- Switch database backup and restore.
Based on this TCP/IP interface, we also have a centralized network management TMN solution, managing not only Vectura SoftSwitch elements, but also Vectura IP Access and Vectura Cable Access equipment. It is based on the Unix environment and uses an HP Openview / Cisco works and an Oracle database. It includes features that comprise the maintenance, performance failures, configuration, security, and billing management areas.
SOFTSWITCH
Friendly Communication
Distributed Control
Performance Analysis
Vectura SoftSwitch has a series of features that greatly facilitate service for the operation staff. The physical structure of theVectura SoftSwitch makes hardware feature localization and handling simple for corrective and preventive maintenance. The platform communication language, using command line (CLI), is friendly and made up of mnemonic and intuitive commands, minimizing manual use and assisting the operator's learning curve. Through its own operations interface, it is possible to use menus, which help in the choice and
parameterization of the ideal commands to be used. Equipment operational integrity is assured by mechanisms based on user identification, password, authority and specialization degree, which protect the system against non-authorized accesses.
The system functions are performed by elements called Modules. Each Module has a processor, that controls functions associated to it. All processors are connected to a redundant local network, allowing them to exchange messages. Processor set and signaling paths create a distributed processor network. In addition to being distributed, this control framework is completely distributed and redundant in relation to its essential functions. This means that there is no element whose individual failure causes the loss of some essential function.
It is possible to obtain traffic measurement reports at any time without previous marks, allowing the operator to continuously evaluate Vectura
SoftSwitch and network performance. This makes carrier company engineering and planning work easy, like optimizing equipment and enhancing performance indices. Measurements related to routes and desired destinations are available, and via commands, it is possible to schedule a series of reports, which allow the operator to efficiently monitor, in real time, all traffic under Vectura SoftSwitch control.
Modular Architecture
Synchronization
With technology evolution, telecommunications networks are more and more complex, and the required time limit to develop new services is shorter and shorter. This requires feature optimization directed toward its development, implementation, exploration, and maintenance. The most efficient way to impose this optimization is, no doubt, the use of solutions that allow the use of common parts in dealing with different problems. attention. In Vectura SoftSwitch, this principle is applicable to all phases, from equipment concept design to network
maintenance.
The synchronization structure meets clock signal generation and distributions needs, for both module interconnection internal synchronization and the Vectura SoftSwitch attachment to the digital telecommunications network external
synchronization. It allows triply signal generation and distribution, and the system to support any kind of simple and/or double failures at generation and distribution. This assures very high system availability if fail occurs at the synchronization framework.
The signaling functions between processors and internal synchronization distribution can be configured in up to four plans, which work in load sharing, and assure, due to the redundancy used, high reliability. Such redundancy operates in a way that any synchronization or signaling request can be met by any of the respective working plans. The number of signaling plans between processors is configured in such a way to meet reliability and traffic requests due to the use and capacity of each Vectura SoftSwitch. Platform Features P la tf o rm
SOFTSWITCH
Dimensioning
The redundant dimensioning of components assures high reliability to the Vectura SoftSwitch, as it consists of determining each type and number of functional modules, mainly according to the number and type of controlled subscribers, gateways, routes and junctions, and traffic profile informed by the carrier companies.
The Vectura SoftSwitch is configured with its functional modules with necessary capacity and redundancy to support traffic and call amount overloads. Other aspects, considered at dimensioning, are cost optimization, traffic balancing, physical body placing, services supplied, reduction in physical space, operational requirements, and possible expansions.
The Vectura SoftSwitch modular structure allows gradual and cost-effective configurations, avoiding initially expensive investments in implementations and
expansions, as it meets low initial demands, increasing the capacity up to 600,000 end-points (residential and trunk gateways). The processing structure, distributed in up to four signaling plans can compose a net of up to 1,024 internal processors.
Redundancy
Despite the fact of Vectura SoftSwtich hardware and software architecture assure the necessary availability to a carrier class equipment, with every single point covered to fully eliminate all chances of services interruption, Trópico offers the opportunity to implement a geographic redundancy for softswitches. More than ever, provide the network with features for "disaster recovery" is a
mandatory point. Vectura SoftSwitch can provide more than that it offers the business continuity. A redundant configuration with two Vectura SoftSwitches, strategically allocated in different places or cities, divide actively the call processing load, keeping the service on line, with no interruptions. Such feature, plus the high reliability offered by IP networks and respective alternative routes, can provide the NGN with availability ranges never seen before. Platform Features P la tf o rm
SOFTSWITCH
- Distributed and decentralized control
- Load sharing without exchange of updating messages between processors
- Smooth degradation in the presence of failures - Independent signaling and synchronization structure - Active redundancy with load sharing in the signaling,
synchronization distribution and call processing functions
- All synchronization modes provided in the master-slave method
- Standardized internal interfaces
- High degree of modularity and large expansion capacity
- High capacity to absorb technological evolutions - Highly scalable for capacity of up to 5.000.000 BHCA - Capacity to control up to 600.000 end-points
(residential + trunk gateways) - 1.048 routes (input + output)
- Connection with data network via Ethernet interface - MGCP/ H.248/ SIP/ H.323 protocol for gateway control - Total compatibility with Common Channel Signaling
Network # 7 (SS7), supporting ISUP, INAP, MTP Routing Enhancement
- Softswitch with function Class 4 and Class 5
- SS7/ISUP protocol transport in IP network (SIGTRAN) - Integrated Signaling Transfer Point (STP) Benefits - Optimized flat-topology network for voice and data
traffic
- Low operating cost
- Improved transmission and switching use - Transparent use of services
- Compatible and interoperable with existing networks - Fast introduction of new services Applications - Tandem Vectura SoftSwitch with automatic billing, to
control tandem calls with origin/destination in points of trunk gateways type
- Tandem/Local Vectura SoftSwitch with automatic billing, to control tandem calls with source/destination in end-points of trunk gateways, enterprise gateways and residential gateways type
Summary of Technical Features
S u m m a ry o f T e c h n ic a l F e a tu re s Terminal Types Trunking Types
Call Routing Features
Environmental Conditions
Primary Power Supply
- Residential Gateway (IP end-points), with MGCP/ H.248/ SIP / H.323 protocol
- Enterprise Gateway, with MGCP/H.248 protocol
- Other terminal H.323 and SIP.
- Five routing plans
- Origin marking call routing with route analysis in respect to the trunk and residential gateway source number (for trunk gateway and residential gateway) - Automatic interception
- Call rerouting
- Rerouting of calls to message service
- Possibility of changing source or destination address in a single call
- Programmable treatment and end of selection - Network routing traffic management
- Supports existing numbering plans and enables centralized change
- Fast routing
- Reference temperature rating: 25°C ± 3°C - Critical marginal temperature rating: 7°C to 40°C - Temperature gradient:10°C/hour
- Relative humidity: 45% to 70% - Humidity gradient: =10%/hour
- Measurement range: -48 Vdc ± 10%
- Operating range: -43.2 Vdc to 57.6 Vdc Packaging - Modular and flexible mechanical structure
H.323 and SIP terminals Trunking Types
- Trunk Gateway (end-points IP) via MGCP/ H.248 supporting Ss7, R2 e PRI.
The Vectura Convergence Gateway consists of an interoperating unit with TDM voice/data transcoders for packet voice/data, E1 interfaces for telephone-switch connections, and data interfaces for packet network. The Vectura Convergence Gateway implements the trunk-gateway function, which is controlled by the SoftSwitch. With Vectura
convergence gateway, the carrier can interconnect its existing switches with the data network in a cost-effective and enhanced manner.
The Vectura Edge Ewitch corresponds to the digital switch, supporting all services and enhanced types of subscriber switches; it has an incorporated data-network interface, in which TDM voice/data
conversion for IP packets is internally provided. The Vectura Edge Switch will help the carrier to offer interconnection with the existing switches via conventional network (TDM) to service locations where it is required, but while allowing smooth migration to the new-generation network, where voice and data services are converted.
Vectura Convergence Gateway
Vectura Edge Switch
The Vectura ISP Easy Way function allows Internet traffic to be offloaded to the data network at the local switch, preventing this traffic to be carried by the tandem network. Support is thus given to Multiple ISPs (Internet Service Providers). It implements the functions of authorization, authentication, data accounting for measurements and billing (AAA authorization, authentication and accounting functions). The Vectura ISP Easy Way function supports connections with subscribers who own analog modems or ISDN accesses, termed IP address to subscriber, interface with ISP, AAA operates and routes user data over packet network. This Internet offloading function can be incorporated in existing Trópico-technology switches or the Vectura Edge Switch.
The Vectura SoftSwitch, via standard interfaces (H323 and SIP), allows solutions to be openly implemented, introducing natural innovations and interoperating with any switch and access
technology. Unlimited possibilities are offered to include enhanced services, or V-services, which add differentials to final user perception and,
consequently, its loyalty the prepaid, voice portal, voice-mail, unified messaging, call screening, one person/one number, click to talk, Internet second line, 0800 service, 0300/0900 service, universal-acces number and VPN (Virtual Private Networks).
Vectura ISP Easy Way
Vectura V-Services Trópico S.A. Solutions for Convergent Networks
N G N S o lu ti o n s
SOFTSWITCH G lo s s a ry o f S e rv ic e s
Services Available through Vectura SoftSwtich
Originating Call Block
Controlled Blocking of Originating Calls
Automatic Transfer to Operator
Temporary Transfer
Automatic call forwarding on no answer
Automatic call forwarding on busy
It allows limiting originating calls for all or some directions. These restrictions are scheduled and cancelled by the Telco, at subscriber's request.
It allows subscriber, in his own set and through a password, to choose the restriction for originating calls between two options previously established by the Telco at his request.
It consists of intercepting calls routed to the subscriber and forwarding them to an operator, in order to take notes or get information. This forwarding is scheduled and cancelled by the Telco, at subscriber's request. When originating a call, the subscriber will receive a distinguished dial tone, warning him that the calls are being forwarded.
It allows forwarding all the calls automatically to another number, scheduled by the subscriber from his own set. When originating a call, the subscriber will receive a distinguished dial tone warning him that the calls are being forwarded.
It allows forwarding all the calls automatically to another number, if there is no scheduled answering by the subscriber from his own set. When originating a call, the subscriber will receive a dial tone warning him that the calls routed to him are being forwarded, if there is no reply.
It allows forwarding all the calls automatically to another number, scheduled by the subscriber from his own set, if the subscriber's terminal is busy. When originating a call, the subscriber will receive a dial tone, warning him that the calls are being forwarded, if his terminal is busy.
Abbreviated Call
Hot Line
Warm line
Automatic Wakeup Service
Do not disturb
Call Waiting
It allows originating calls for given destinations through an abbreviated code, previously designed. To each abbreviated code the subscriber associates a list of numbers, including the national or international prefixes. The subscriber programs from his own telephone set, as well as checks and cancels the association made, provided that the set is able to send multi-frequency tones to the network.
It allows originating a pre-determined call by simply taking the hook off. The call is booked in the softswitch and performed by the Telco, under the subscriber's request. The completed traffic may be blocked or not.
It allows establishing a call, previously booked, in case the subscriber does not start dialing within a time slice after he received the dialing tone. The subscriber may program this from his own set.
It allows receiving an automatic wakeup call at the time desired, whose programming is made from the
subscriber's set, and it is valid for a 24-hour period. If the subscriber's line is busy at the moment of the wakeup call, or if he does not answer it, the call is repeated for three times after a fixed interval. After that the call attempt details are automatically registered.
It consists of intercepting the calls routed to subscriber and rerouting them to an announcement machine. Programming and canceling are made by the subscriber from his own telephone set. When originating a call, the subscriber will receive a distinguished dial tone, warning him that the calls are being forwarded.
It consists of telling a subscriber that there is an attempt to establish a new connection. This indication is made by a tone, perceptible only by the subscriber called, who Available Services controled by Vectura SoftSwitch
may answer the second call without releasing the first one. The subscriber must have a multi-frequency telephone set with R key (dial tone rollback signal) or a flash key.
It allows Vectura SoftSwitch, at abnormal traffic situations, to regularly route the calls originated by primary subscribers, while the calls attempts from the other ones are blocked during the abnormal traffic situation. This service is booked by the Telco.
It consists of recording data from all the calls originated by the subscriber during a given period. The Telco makes programming and canceling, at subscriber request.
It consists of selecting and storing data on calls originated by the subscriber indicated for this kind of service. When the subscriber is responsible for the call accounting, it is possible to store information on call interlocutor, duration, type, and the call start time.
During a call, it allows the user to setup a new call, holding the original one. The subscriber may switch between both calls, go to a new call or forward it, releasing the former one. The call releasing and/or forwarding only occurs when the called subscriber (B) performs querying/forwarding. The subscriber must have a terminal with R key (dial tone rollback signal) or a flash. The scheduling is made by the Telco.
It allows establishing a new call during a call, holding the original one. The subscriber may switch between both calls, go to new one or forward it, releasing the former one. The call releasing and/or forwarding only occurs when the called subscriber (B) performs
forwarding/forwarding. It is possible to have a conversation among the three implicated parts. The
Line Priority
Originated Calls Detailed Recording
Recording of calls for Accounting
Call Consultation/Transfer
Three-way Calling
subscriber must have a terminal with R key (dial tone rollback signal) or flash key. The scheduling is made by the Telco.
It consists of assigning local call tariffing to the called subscriber. This service is scheduled by the Telco, at subscriber's request.
It allowsprogramming the subscriber's terminal, at request, to hold completed call, register call data or to hold and log call.
It allows the subscriber, when called, to receive the caller directory number at an additional display on the telephone set. This service is scheduled by Telco, at subscriber's request.
It consists of keeping registered the last number called by the subscriber , so that he may call this number again by pressing a number sequence, using a multi-frequency signaling set.
Reverse billing
Malicious call tracer
Caller identification Registered Call SOFTSWITCH G lo s s a ry o f S e rv ic e s
SOFTSWITCH Services for ISDN ports
Terminal Portability
Virtual PABX
Multiple Subscriber Number
Call Hold
Call Waiting
By using this service, the user can change the terminal during an active call or move the terminal to another subscriber's installation connector.
It is available for all the subscribers that have the basic Vectura SoftSwitch-controlled ISDN accesses.
Vectura SoftSwitch enables the Telcos to offer services to subscribers connected to residential gateways and all the PABX services within the Vectura IP Access, without the need for outdoor equipment and without additional installations. This facility allows the subscriber to use all the conveniences offered by the presence and
distribution ofextensions through a PABX system, without having to buy the equipment.
This service allows you to associate more than one directory number with the Vectura SoftSwitch controlled access. Accesses using this service can have any multiple number quantities associated with themselves, but there is a default directory number registered at the Vectura SoftSwitch for each access. For completed call, the destination number is indicated when offering the call to the destination user who has this service activated. For originating calls, the user must send the source number (Multiple Number) to be used when setting up the call.
It allows user to hold a call, for instance, in order to generate a new one or answer an offered waiting call.The maximum number of held calls can either be limited by the configuration or not. It will be dynamically dependant on the Vectura SoftSwitch features available, if it is not previously limited. While using this service, the user can change the terminal during an active call or move the terminal to another subscriber's installation connector. It is available for all the subscribers that have the basic Vectura SoftSwitch-controlled ISDN accesses.
It allows a completed call to be offered to a Vectura
SoftSwitch-controlled ISDN access even if all the information forwarding channels are busy. It is the subscriber's terminal function to warn the user about the presence of a new call . The user can then release a call to answer this new one, or hold on to an existing call.
It allows a128-octet limited size information to be seamlessly conveyed, during a call, among the ISDN users subscribed to Direct Extension Dialing (DDR).
This service allows a completed call to be routed to a specific terminal within the subscriber's facility through the sub-addressing included at the call request by the user who originated it. The Vectura SoftSwitch seamlessly transports this information between ISDN accesses that are connected to gateways, or between an ISDN access and an output connection with ISUP signaling.
It is possible to identify a completed call originator at an ISDN access using this service. When a call is
originated at an ISDN access that has a multiple number service, the directory number indicated to the destination subscriber can be a number sent by the call source terminal.
This service allows the user that originates a call to hide his identification presentation (list number) to the destination user. The user can choose for permanent mode restriction, where all calls originated by this access terminal will have a presentation restriction indication on the the caller identification, or for
temporary mode restriction, where the user indicates at each call if he wishes to use restriction or not.
User-to-User Signaling
Terminal Sub-addressing
Caller Identification Presentation
Caller identification presentation restriction
G lo s s a ry o f S e rv ic e s
It allows The Vectura SoftSwitch to send the total or partial Subscriber's destination ISDN number to the destination user so that it can identify a branch within the subscriber's facility. Calls for users with this kind of service can be routed by the Vectura SoftSwitch when access is identified through the first digits of the subscriber's number. This service is available under subscription when hundred or thousand of numeric series are associated with the user
The use of this service allows the user who originated the call to identify the destination subscriber's number that answered the call. The connected line number can be indicated by the user terminal that answered the call, or the default access number registered at the Vectura SoftSwitch.
This service allows user that receives a call to hide his identification presentation (directory number) to the source user. User can choose for permanent mode restriction, where all calls routed to a particular directory number of this access will have a presentation restriction indication on the connected line identification, or for temporary mode restriction, where user indicates at each call if he wishes to have restriction or not.
It allows closed user groups to performed, being
identified by a numeric code. Special characteristics can be assigned to the accesses participating the group, such aspermission for calls only among the same group accesses, permission for an access to receive
subscriber calls external to the group, permission for an access to originate calls for subscribers outside the group. ISDN access subscribers can participate in more than one closed user group and user can indicate at a call origination the closed group index to which he belongs and which one wishes to use at this call.
Connected Line Identification Presentation
Connected Line Identification Restriction
Closed User Group
Automatic Call Forwarding
Call Forwarding on Busy
Call Forwarding on no Answer
Malicious Call Tracing
It allows all calls routed to an ISDN access to be rerouted to another user scheduled directory number. When originating a call, the subscriber will receive a warning indicating that the transfer service is activated.
It allows all calls routed to an ISDN access and met access busy to be rerouted to another user's scheduled directory number. When originating a call, a subscriber will receive a warning indicating the transfer service is activated.
It allows all calls to an ISDN access that are not answered within a specific time period to be rerouted to another user's scheduled directory number. When originating a call, the subscriber will receive a warning indicating the transfer service is activated.
This service allows an ISDN user to receive a call, and ask for data related to this call to be registered at the Vectura SoftSwitch. For a subscriber with this service activated, the request can be done during the call conversation phase or immediately after the call originator user hangs it up, within a limited period of time. SOFTSWITCH G lo s s a ry o f S e rv ic e s
SOFTSWITCH Advanced Services - Vectura V- Services
Prepaid
Voice Mail
Unified Messaging
Provides telephone service with pre-paid billing using a system of acquired credits. These credits can be associated with: a wired and land terminal or WLL for subscribers who want to control the telephone bill budget. It can also help the carrier to administer defaults; a password allowing the flexibility to complete a call from any terminal, even from another Telco. The call price will be charged from the credit associated with that password. This engenders customer loyalty by allowing for the renewal of credits via credit card or billed to a home telephone account. It replaces the telephone card with many advantages, enabling sponsors to pay for call costs once the users agree to hear a marketing message.
Allows voice messages to be stored and queried. This service generates greater traffic generato. as well as increases the amount of completed calls and the efficiency of voice mail. The user can customize his greeting, change his password, reroute a message to another mailbox, and obtain the date, time and phone number of the person who left the message.
Message service distinguished by a single mailbox with multimedia storage features (text, voice, and fax), which can be accessed via different means (telephone, fax, e-mail, browser, and SMS cellular telephone), for both message deposit and retrieval.
Call Screening
One Person/One Number
Click to Talk
Internet Second Line (Internet Call Waiting)
Allows filters (restrictions) to be defined by the user to accept originating calls or complete a call.
Allows a subscriber to be accessed through a singlenumber. This number centralizes his residence, work, and cellular number. The call is automatically rerouted to a predefined number according to a previous schedule made by the user via WEB. This programming can consider day of the week, time, and day of the month. It is a way to implement number portability.
Allows a telephone call to be generated during an Internet session. This potentially improves e-commerce and tele-education.
Allows a telephone call to be received during an Internet session. The call is announced on the browser and the subscriber can choose to answer it via the Internet, a land telephone (in this case, disconnecting the Internet session), direct it to voice mail, or ignore it.
G lo s s a ry o f S e rv ic e s
SOFTSWITCH
0800 Service
0300/0900 Service
Allows service customers to assume call costs that are routed to their attention centers. Calls can be addressed considering the day of the week, time and certain dates. Alternate routings can also be considered if there is no reply or if the line is busy. Using this service, it is possible to establish an efficient communication channel between a company and its customers to clarify information, register claims and suggestions, and provide sales support.
These services are based on voice and are charged according to the information supplied: Services based on messages: news, dollar rates, soccer game scores, etc. Services involving attendants: horoscope, queries, tales, etc.
Services of conference calls.
Universal Access Number
VPN
Voice Portals: browsing through voice menus to access information retrieval.
Allows the user to route a call to the most convenient destination depending on the call source and other conditions (day of the week, time, etc). It is greatly used by subscribers who have geographically spread attention centers.
Allows the formation of private networks using public telecommunications resources in a shared way, creating self-numbering plans, supplementary services, and expenses with external calls.
Advanced Services - Vectura V- Services
G lo s s a ry o f S e rv ic e s
ALL Access Leased Line Access ADSL Asymmetric Digital Subscriber Loop AMA Automatic Message Accounting API Application Program Interface ATM Asynchronous Transfer Mode BHCA Busy Hour Call Attempts CATV Cable Access TV CDR Call Detail Recording
CMTS Cable Modem Termination System DHCP Dynamic Host Configuration Protocol DSLAM DSL Access Multiplex
FTAM File Transfer, Access and Management FTP File Transfer Protocol
GW Gateway
H.248 ITU Standard for media gateway control
H.323 Standard for multimedia communication systems based on packet networks HFC Hybrid Fiber Coax
HTTP Hyper Text Transfer Protocol ICW Internet Call Waiting
INAP Intelligent Network Application Protocol IP Internet Protocol
IP SCP IP Service Control Point
ISDN Integrated Services Digital Network ISP Internet Service Provider
ISUP ISDN User Part
Glossary of Abbreviations SOFTSWITCH G lo s s a ry o f A b b re v ia ti o n s
Glossary of Abbreviations SOFTSWITCH G lo s s a ry o f A b b re v ia ti o n s
ITU International Telecommunications Union
ITU-T ITU Telecommunications Standardization Sector LNP Local Number Portability
MGCP Media Gateway Control Protocol MMI Man/Machine Interface
MTP Message Transfer Part
OMS Operation, Maintenance and Supervision OPT Open Packet Telephony
OSI Open Systems Interconnect POTS Plain Old Telephony System
PSTN Public Switched Telephony Network RAS Remote Access Server
RI Remote Interface RU Remote Unit
SAP Service Access Point
SDH Synchronous Digital Hierarchy Sigtran Signaling Transport
SIP Session Initiation Protocol SMS Short Message System
SNMP Simple Network Management Protocol SS7 Signaling System number 7
STP Signaling Transfer Point
TCP/IP Transmission Control Protocol over Internet Protocol TDM Time Division Multiplex
TGW Trunk gateway
TMN Telecommunications Management Network TUP Telephony User Part
VolP Voice over IP
VPN Virtual Private Networks WLL Wireless Local Loop
founded in 1999 from a joint venture between Promon - a Brazilian group present in telecommunications, engineering, e-commerce and managing - and CPqD, the biggest Latin American technological research center. Trópico digital switching technology is responsible for 8.5 millions of installed digital terminals throughout Brazil, and recently in Latin Amercia and in the United States. The offices and the development laboratory are located in Campinas - State of Sao Paulo, and the industrial plant is in Manaus - Amazonia State.
