Today, the lack of flexibility in legacy switching equipment makes business extremely difficult for voice service providers. There are many possible sources of difficulty: a capacity crunch in the network; exorbitant operational costs; or outrageous price quotes from incumbent vendors when it’s time to expand and offer additional services. Difficulties may also arise from the challenge of planning for an eventual migration to new leading-edge technologies. In every case, the limitations of the existing proprietary legacy switch environment create serious obstacles. To succeed, carriers need to rapidly deliver next-generation voice and data services in order to maintain and grow their customer bases. Simultaneously, they must continue to reduce operating expenses to protect margins. Traditional circuit-switched networks, however, require lengthy development and deployment cycles for new services. Existing legacy equipment is also extremely expensive to operate and service. As a result, carriers worldwide are evolving their traditional networks into converged, packet-based networks that provide critical cost and time to market savings.

Today’s NGN architectures empower carriers with the infrastructure capabilities they need as they migrate to next-generation converged networks. Unlike networks of the past, NGN architectures are not limited to enabling one specific type of service—only Class 4 or Class 5. Instead, NGNs are multi-service systems that incorporate operational efficiencies and scalability. They support full end-to-end network solutions that address current subscriber needs while providing the capacity to offer rich multimedia services.


The Verscom Class 4 PSTN Emulation Solution

The Verscom Class 4 PSTN emulation offering allows carriers to significantly reduce costs by implementing a packet-based next-generation network (NGN) that maximizes the efficiency of network resources. Verscom provides a complete solution including all necessary components of a packet-switched CLASS-4 voice network: Softswitch, trunking gateway, signaling gateway, session border controller and relevant OSS/BSS applications through an extensible architecture designed for regulatory compliance and value-added services. Carriers can deploy a service-rich, next-generation network using Verscom solution line while migrating single or multi-switch Class 4 toll tandem switch installations based on legacy TDM switches. Traditional intelligent network services, whether in-switch or SCP based can be provided in order to offer service transparency.


Benefits of Verscom Class 4 PSTN Emulation Solutions

  • Incumbent wireless or wireline carriers can use existing network element links while phasing in the Verscom Solution capabilities, reducing costs and providing a smooth transition without stranding existing customers. When a startup configuration is needed for a green field application, the initial network can be deployed at a reasonable cost point—and network growth is equally cost effective

  • Carriers can grow their network as their existing end users’ needs expand and as the number of users increases. This is brought by "Pay as you grow" scalability, reducing initial capital outlay and unmatched capacity increase speed.

  • Class 4 solutions must achieve “five 9s” reliability to ensure that they are out of service only a miniscule amount of time per year. Through meticulous engineering foundation of our Class 4 solutions and the use of geographic redundancy, very little (if any) failure ever occurs.

  • Carriers can expand into new markets and implement new services cost efficiently using state-of-the-art technology which protects their investment through use of open platforms.


Applications

The Verscom Class 4 platform can be deployed in a Class 4 environment to support a variety of applications such as NGN tandem migration, TDM network simplification and traffic diversion.


NGN Tandem Migration

This application supports the bypassing of legacy tandem switches, thus capping further investments in legacy switches while building out next-generation infrastructure. It also enables migration of SSP and SCP functionality and helps increase inter-carrier traffic from TDM to VoIP. There are four key benefits in this application:

  • Toll bypass
  • Tandem exhaust relief
  • Circuit/packet inter-working
  • Easy migration to IP-based infrastructure


TDM Network Simplification

To simplify TDM networks, this application supports interconnections with the traditional circuit-switched-based PSTN over SS7, SIP clients, and third-party VoIP networks. As a result, carriers can use Verscom Class 4 system to interconnect customers to a wide variety of existing applications without the need for multiple dedicated networks. The result is a flatter hierarchy of the existing TDM network—fewer systems are required—and a contribution to reduced operating expenses (OPEX).

Three important benefits accrue to this application:

  • Reduced number of tandem nodes
  • Decreased trunks required for tandem interconnect
  • Scaled back staffing needs in operations and maintenance support

Traffic Diversion

For traffic diversion, a trunking gateway can be used to offload traffic from an overloaded legacy tandem switch. In this application, our solution delivers three significant benefits:

  • Overload relief
  • Switch replacement
  • Access to next-generation services


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