Free/Premium Calling (N2ACD)

Automated Call Distribution via CAMEL/INAP or SIP

The N-Squared Automatic Call Distribution (N2ACD) is a graphical flow-designer and matching run-time engine for automated call distribution within the Telco operator’s core network.

The solution is ideal for toll-free, premium-rate, and geographic presence numbers.

The built-in features provide the typical call-distribution feature set, including:

  • Announcements and DTMF menu selection.
  • Time of Day, Day of Week, and Day of Year (holiday) routing.
  • Geographic Routing, including postcode routing.
  • Barred/Allowed Number lists.
  • Proportional routing, Statistics counting.
  • Sequential Hunting, Follow-me numbers.
  • Account Code checks, Speed Dial translation, PIN entry.
  • Breakout Dialing, Extension Dialing.

The N2ACD supports both traditional and next-gen call control:

A single deployment can support either or both of:

  1. CAMEL/INAP via InitialDP from MSC/SSP.
  2. SIP INVITE from SIP softswitch.


Product Information

User & Technical Guide

Protocol Conformance Statements

Deployment Notes

Platform Sizing

The N-Squared Automatic Call Distribution is active/active laterally scalable for High-Availability, Geographic Redundancy, and to support increased traffic growth.

This diagram shows the structure for typical full deployment.

OSS/BSS Features

The N2ACD Flow Editor is a GUI for service design used by Telco staff, resellers, and self-managing customers. The Administration GUI for Telco staff and authorized resellers is used for customer, service number, and underlying configuration management.

Standard Operational features include Alarms, Statistics, and Event Data Records.

The N2ACD solution generates extensive Event Data Records comprising:

  • SIP/SCP EDRs describing the SIP or CAMEL call-control interaction.
  • ACD EDRs describing the service flow, suitable for customer reporting.

N2SVCD Components

The N2ACD is built on the N2SVCD framework. The following diagrams show the N2SVCD components which are deployed for a standard SCP deployment, and for a standard SIP deployment respectively:

Telco Products