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

Diameter to SS7 Interworking FunctionDiameter to SS7
Interworking Function

Extend legacy solutions to LTE / IMS networks
cost effectively and securely with the SVI_IWF

Diameter to SS7 Interworking Function

The SVI_IWF is a 3GPP compliant Diameter to SS7 IWF (interworking function) that enables legacy solutions to be extended to LTE and IMS networks. It’s a complete package that can be deployed in
stand-alone mode or as an optional module for Squire Technologies’ range of existing SG, STP, SBC, MG, MGCF and other solutions.

Offering configurable control of Diameter interfaces, including S6a, S6d, S13, S13a and more, it provides a critical link between 2G, 3G and Fixed infrastructure with LTE and IMS networks. It solves interoperability issues and enhances ROI, by protecting investments and enabling new service opportunities.

Key Benefits

  • Connect legacy solutions to LTE / IMS networks
  • Add Diameter capabilities to existing Squire Technologies’ solutions
  • Enhance ROI from existing solutions
  • Access new services in LTE / IMS domain
  • Built on proven technology, deployed worldwide

SVI_IWF diagram

Key Features

  • SS7 MAP / Diameter conversion to 3GPP TS 29.305
  • RFC 6733 compliant
  • Configurable AVP for comprehensive support of Diameter interfaces and variants
  • Highly scalable
    • Up to 20,000 TPS
    • 1024 SS7 signalling links over SIGTRAN or TDM
  • Flexible deployment options
    • Software-only, option for all Squire Technologies’ solutions, including
    • SG, STP, SBC, MG, MGCF
    • Standalone Diameter Bridge
    • High-performance dedicated servers and blades
  • RADIUS interworking
    • Diameter / SS7 / RADIUS
  • Redundant configuration
  • GUI driven

Operation, Administration and Maintenance (OA&M)

Web based GUI

Web Based GUI

The globally deployed SVI platform empowers its users with an advanced level of expertise and functionality.

Building upon the SVI command line interface the web based GUI brings the user powerful tools to manage system resources, ensuring swift new user adoption and delivering a real-time OA&M, offering:

  • Dashboard interface
  • Wizard library
  • Customisation - via XML
  • Secure multi-user features
  • Extensive help resources
  • Compatibility with the entire SVI range


Real time system setup, onboard resource and call routing management


Comprehensive statistical service monitoring and system status tool


Rapid tracing, diagnosing and CDR analysis compatible with Wireshark and Ethereal

Command line interface

Command Line Interface

Expert user tools accessed through wide vocabulary of command line queries via high speed MMI interface.


  • High speed real time configuration
  • Full ‘secure’ remote access


  • Low Level MMI Interface
  • Full onboard database inspection and control
  • Real time resource status display
  • Controlling system recourses


  • Configurable logfiles, capturing all aspects of system performance
  • Compatible with Wireshark and Ethereal for full graphical protocol traces


  • Extensive onboard CDRs and statistics generation
  • Call minutes, ASR, PDD, ACD, etc
  • Resource Statistics
  • Trap Reports Network

Network Monitoring

  • Trap capture
  • Statistic monitoring, graphing and alarming


1+1 Dual Plane Worker / Hot Standby

  • Database and signalling information check pointed between planes
  • Replicated Hardware and Software

Maintain calls in answer on failover
Eliminates Single Points Of Failure
Five Nines up time (99.999)
Single Point code spread across dual plane architecture
Real Time Maintenance Upgrades

• 1+1 Dual Plane Redundancy
• Hot Swap PSU, Fans

SVI_IWF Redundancy diagram