The SVI-SBC is a state-of-the-art, cloud enabled Session Border Controller providing comprehensive network edge security for fixed and mobile service providers and large enterprise customers.

SBC Virtualisation

The SVI-SBC session border controller is deployed in virtual environments worldwide enabling operators to benefit from the reduced costs and benefits that a cloud native component can deliver them.

The SVI-SBC can be enabled as a Virtual Machine (VM) on existing infrastructure or as a fully blown Virtual Network Function (VNF) in an AWS or Openstack cloud infrastructure.

Virtual Deployment

Virtual Machine on industry standard servers in a data
centre using a hypervisor - i.e. VMware.

Cloud Deployment

Delivered as a Virtual Network Function (VNF) in AWS or
OpenStack cloud infrastructure.

Auto Configuration

Open product management interfaces allows for auto-configuration by an orchestration platform. Whether orchestration is physically delivered via an XML, SQL, HTTP, TELNET etc interface, the SVI-SBC session border controller has been designed from the ground up to deliver remote operation, administration and maintenance (OA&M) control.

Distributed Architecture

The SVI-SBC is architected on micro-services principals separating the signalling and media planes into distinct software components.

The signalling plane provides a high availability core enabling centralised routing and control across the network.

Multiple media planes can be instantiated dynamically to meet bandwidth demands and / or distributed across different territories to match latency requirements and improve network resiliency.

This architecture enables on-demand scaling in a virtual environment delivering full network elasticity.

Dynamic Load Balancing
Dynamic load balancing insures optimum network performance with network load shared evenly across network components.

Network Resilience
The distributed network architecture insures network resiliency coupled with high availability options as standard that insure carrier grade reliability.

SIP Signalling Manipulation Engine | SSME

  • Message Manipulation

    Powerful regular-expression based manipulation
    of message header and contents allowing removal,
    creation and replacement.


  • Redirects

    Acts as redirect server by redirecting
    messages to another service
    Can be used to provide load balancing / throttling

  • Filtering

    Black List / Whites based on Message Header
    and contents

  • Routing

    Message Header and contents
    Load balancing profiles
    External Lookups

IMS Support | A-SBC + I-SBC

The SVI-SBC provides next generation support for secure interconnect to IMS based networks. Delivering comprehensive VoLTE support allows the SVI-SBC to be deployed in the core of an IMS network or provide IPX / Roaming Hub interconnect.

The SVI-SBC provides a flexible architecture allowing providers to consolidate functionality and resources at both the access and interconnect interface through support for both the A-SBC and I-SBC modes.

  • A-SBC
    The Access-SBC sits on a service providers access borders, i.e enterprise locations, internet, 3G/4G mobile and fixed line.

Supports IMS functions:

  • P-CSCF: Proxy Call Session Control Function
  • E-CSCF: Emergency Call Session Control Function
  • BGCF: Breakout Gateway Control Function
  • AGW: Access Gateway
  • ATCF: Access Transfer Control Function
  • ATGW: Access Transfer Gateway
  • I-SBC
    The Interconnect-SBC sits on a service providers interconnect borders, i.e. the borders between service providers networks.

Supports IMS functions:

  • IBCF: Interconnect Border Control Function
  • IWF: Interworking Function
  • I-BGF / TrGW: Transition Gateway

High Availability

  • 1+1 Dual Plane Worker/ Hot Standby
    - Database and signalling information checkpointed between planes
    - Replicated hardware and software
  • Maintain SIP calls in answer on failover
  • Eliminates single points of failure
  • Five Nines uptime (99.999%)
  • Single IP service address using VIP technology
  • Real time Maintenance upgrades
  • RTP Failover and Re-Invite

Real-time Fraud Prevention

Squire Technologies real-time fraud prevention gateway, MavenShield, can be enabled in the SVI-SBC to:

  • Combat SIP fraud in real-time
  • Proactively block, tear-down, transfer and redirect fraudulent calls
  • Seamless interface to upstream firewall and monitoring applications
  • Deployed in non-critical path of network
  • Rapidly provision network lookups aimed at identifying fraudulent traffic

The annual loss globally to the Telecoms industry from fraud is currently estimated by the CFCA (Communications Fraud Control Association) to be $29.2 billion.


Lawful Intercept

The SVI-SBC session border controller from Squire Technologies allows operators to enable Lawful Intercepts:

Active or Passive Intercept support for:

  • 3GPP/ ETSI LI Standards
  • SIPREC ( RFC 7245 )

Find out what our customers
say about us...


Further Information

Download our SVI-SBC Session Border Controller Presentation

Need to interconnect to legacy SS7 services? - Take a look at our SVI-GMSC

Download our SVI-SBC Session Border Controller Datasheet

This email address is being protected from spambots. You need JavaScript enabled to view it.

© Squire Technologies Ltd 2022. All Rights Reserved.