+44 (0)1305 757314   |Enquiries@squire-technologies.com  YouTube Twitter Linkedin Blog

SBC header 1118Session Border Controller

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.

At the heart of the SBC lies a core set of features including web based OA&M. 

Flexible licensing provides the choice of Legacy SS7, Next Generation SIGTRAN or 4G/IMS/LTE network support.


Session Border Controller Security

DoS/DDoS Protection
Allow trusted/authenticated users access while under DoS attack   
Dynamically accept or reject traffic based on device behaviour
Throttling and overload protection 
TICK Access Control:
Control of max concurrent sessions
Filter devices/networks on a per application basis
Permit access to known devices or networks
Authorise/deny access for registered users; permit or deny access mask users
Accept media only for authorised sessions 

TICK Topology:

Hide network topology preventing direct attacks and maintain privacy
Mask user information for privacy and confidentiality
TICK VPN Support:
Secure L2 and L3 VPN customers
Support inter-VPN sessions
IPSEC encryption levels, DES, 3DES, AES
PPTP - PPP (PAP or CHAP), 40, 126bit MPPE
TICK Fraud Prevention:
Perform signalling and media validation by authenticating and authorising users 


  • RFC 3261 Session Initiate Protocol
  • RFC 2976 SIP INFO Method
  • RFC 3398 ISUP-SIP Mapping
  • RFC 3515 Refer Method
  • RFC 3578 Overlap
  • RFC 2327 Session Description Protocol
  • RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
  • RFC 3665 Session Initiation Protocol (SIP) Basic Call Flow Examples
  • RFC 3666 Public Switched Telephone Network (PSTN) Call Flows
  • RFC 3891 "Replaces" Header
  • RFC 3892 Referred-By Mechanism
  • RFC 3311 Update Method
  • RFC 4566 Session Description Protocol
  • RFC 5806 Diversion Indication in SIP
  • RFC 3398 ISUP to SIP Mapping
  • RFC 3326 The Reason Header Field
  • RFC 2543 Session Initiation Protocol
  • RFC 3262 Reliability of Provisional Responses
  • Draft-levy-sip-diversion
  • Draft-ietf-sip-privacy


  • RFC 3372 Session Initiation Protocol for Telephones (SIP-T)


  • ITU Q.1912 for ISUP / C7-to-SIP interworking


  • ITU Version 2 and 4 
  • Fast and Slow Start
  • Gateway and Gatekeeper interconnect




Web Based GUI: 
SVI_MS Management System:-
  • Secure Remote Access
  • Full Configuration
  • Monitoring
  • Debugging
Debug and Trace
  • Detailed, configurable debug and trace capabilities
  • Compatible with industry standard Wireshark, Ethereal
Network Monitoring
Fully integrated Groundwork's Network Management System supporting:-
  • SNMP
  • Statistic monitorig, Graphing and Alarming
  • Traps Log
  • Secure remote access
  • Multi User / Multi Permission Support
  • Real-Time
  • Comprehensive
  • Detailed reporting available on MSU throughput across all system resources
  • Extensive onboard CDRs and statistic generation
  • Configurable logfiles, capturing all aspects of system performance








SBC redundant architecture

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

Capacity Growth

For a capacity of more than 10,000 simultaneous calls we offer a distributed architecture model for the SVI_SBC.

The advantages of this model:
TICK Virtualisation of Signalling and Media Planes
TICK Centralised Signalling Plane
      TICK Lower Processor usage support up to 30,000 simultaneous calls
      TICK Can be located in Cloud
TICK Distributed Media Plane
      TICK High processor usage
      TICK Add in additional media planes where and when needed
      TICK Distribute across territories providing shortest path media connections

Distributed architecture