SIP Network Server (SNS)

Aricent’s SIP Network Server (SNS) solution is a feature-rich, high-performance offering that enables telecom service providers (TSPs) to provide value-added VoIP services in both access and core networks. Aricent's SIP Network Server is built on an innovative architecture that enables increased differentiation for TSPs through the ability to deliver best-of-breed services.

The SIP Network Server is a high-throughput SIP router, built to deliver best-of-breed services such as prepaid, P2P, video and hosted telephony (Centrex). It also delivers all basic telephony needs and invokes application servers based on the user profile through an architecture that separates applications from the routing engine. Thus, a TSP can provide differentiated services by adding niche applications from multiple vendors, while the SIP Network Server delivers tremendous cost-savings through high throughput and scalability.

The SIP Network Server meets all of the requirements for a carrier-class deployment, including reliability, scalability, manageability, and interoperability. It can support as many as 600,000 subscribers, making it one of the most scalable and cost-effective solutions for providing SIP services in access and core networks.

Aricent’s Companion Lifecycle Services

The majority of Aricent’s products are delivered with tailored combinations of our Lifecycle Services, including Global Innovation and Design, Product Development, Testing and Certification, Network Engineering, Maintenance and Support, and Business Operations and Systems Integration. Aricent’s engineers and consultants have successfully completed thousands of services engagements globally using flexible delivery models ranging from on-site to off-shore. Aricent’s services offer deep communications domain expertise, cost and time efficiencies, quick ramp up and contemporary commercial engagement models including end-to-end commitments.

Architecture

The SIP Network Server uses a load-balancing server to distribute incoming requests between multiple proxy servers, thereby providing a high degree of scalability. The SIP proxy servers are accessible through the Load Balancer (LB). The publicly known SIP Server address for the domain is the address of the LB: the LB monitors the load on each SIP Proxy Server in the server farm and distributes new requests accordingly.

To create a high-availability setup, users deploy the SIP Network Server with a mated pair of LBs running over a subnet, with one of them in the active and the other in the standby mode. The role switchover occurs upon hardware/software failures and the standby system becomes active, taking over the HA IP through which the users connect to the system. This ensures that connectivity with users does not break and transactions do not stop in failure conditions.

Features

• Unmatched Performance and Scalability
  • Unique architecture with Proxy and Application Server as distinct network entities
  • Provides high throughput from the Proxy
  • Up to 600,000 subscribers/1 million BHCA on ATCA chassis
  • Distributed, load-balanced architecture

• Future-Proof
  • Enables multi-vendor, multi-application scenario

• Reliability
  • Carrier-class availability
  • Virtual IP hot-standby redundancy of the load balancer
  • Main and standby on the same IP address
  • Re-routing the active traffic should the server fail
  • Proxy failure detected by the load balancer
  • Congestion control
  • Traffic watermarks and recovery procedures

• Manageability and provisioning
  • Web-based management interface
  • SNMP support
  • Enhanced CLI interface
  • Completely database driven
  • Easy integration

• Flexibility
  • Extensive policy and configuration parameters
  • UDP/TCP/TLS support

• Interoperability
  • Widely tested for interoperability
  • Proven interoperability with voice/video IP phones, gateways, proxies, and application servers from industry leaders such as Cisco, Polycom, Avaya, Pingtel, and Alcatel, among others
  • Standards compliant
  • RFC 3261 compliant

Deliverables

• SIP Network Server object code
• Technical manuals
• Installation manual
• User manual
• Troubleshooting guide
• Feature guides, etc
• Release notes
• Warranty and optional annual support plans
• Training and on-site consultancy
• Turnkey integration and porting services