AIN Triggers

Overview

What It Is

Unbundled Advanced Intelligent Network (AIN) Triggers are considered to be line port features available when you purchase associated unbundled local switching through Verizon. AIN Triggers are used in conjunction with service provider designed and constructed AIN service logic built using the Verizon AIN Service Management System (SMS). In this arrangement, the triggers initiate queries to a Verizon AIN database (Service Connection Point or SCP) where the service logic is housed. Under certain special circumstance, the triggers may be arranged to query a service provider AIN database. Trigger use is subject to the Verizon Trigger Unbundling Principles. Assignment of the triggers by Verizon is conditioned upon certification and testing of the service provider AIN application or requested AIN functionality by Verizon.

There are three categories of AIN Triggers:

• Subscribed triggers are used on individual unbundled line ports.
• Group-based triggers are assigned to specific software-defined groups of unbundled line ports having common characteristics such as routing patterns.
• Office-based triggers may affect all calls originating from the office associated with a public dialing plan. Depending upon the trigger criteria, office based triggers may impact all resident subscribers across the switch(es) in which they are activated. Therefore, careful review of the application will be required before this type of trigger may be certified for deployment.

How It Works

After the service provider designed AIN service logic is certified and tested by Verizon, the service provider service logic is stored in the Verizon SCP to interact with the AIN triggers.

Based on the call conditions (specific criteria called for by the AIN trigger) encountered in the switch (such as an off-hook condition or terminating call attempt), the "trigger" halts call processing in the central office and launches a query over the SS7 network to the AIN SCP for call processing instructions. The database provides a response to the switch with the call processing instructions prescribed by the AIN service logic. The switch then processes the call according to the instructions received from the database. The AIN trigger used to generate the query and the information in the query governs the database response when it is processed at the SCP.

Description

Advanced Intelligent Network(AIN) triggers are events which occur at AIN compatible end-offices (i.e., Service Switching Points or SSPs) by which the SSP recognizes that AIN service logic is needed to process a given call. When an SSP encounters a trigger, the SSP halts call processing for the call and initiates a transaction by launching a message (query) to the AIN database (Service Control Point or SCP) over the SS7 network requesting call processing instructions, which describe how the call should be handled. AIN triggers are provided as line port features as part of the Unbundled Local Switching product family.

Availability

AIN Triggers are available throughtout the Verizon Footprint.

Pricing

AIN triggers are usage sensitive and are charges that are applied on a per query basis. For each query/response that is generated by an AIN trigger, an AIN trigger charge shall be tallied. An interim method of billing the trigger charges may be implemented in Verizon-North until the ability to capture the usage sensitive billing data is available.

Charges for AIN triggers in Verizon-South vary by state jurisdiction and can be found in the SGATs for each state and in the Pennsylvania State Tariff, Public Utility Commission PUC - No. 216, Section 3.

Pricing may vary by state jurisdiction and is pursuant to individual carrier interconnection agreements. See your federal and state tariffs for detailed information.

Features

There are three categories of AIN triggers as follows:

• Subscribed (line based). These triggers are assigned to individual unbundled line ports. Only calls which originate or terminate at the line ports that have these type of triggers activated will encounter the triggers.
• Group Based (sometimes referred to as business group triggers). This type of trigger is assigned to specific software-defined groups of unbundled line ports, which have certain characteristics in common, such as a shared customized dialing plan or routing pattern. Only calls originating at the line ports associated with the group can encounter this type of trigger.
• Office Based. All calls originating from all facilities in the office arranged with an office based trigger can encounter this trigger.

All AIN triggers shall be provided in accordance with Verizon's AIN Trigger Unbundling Principles

Applications

AIN Triggers are provided to service providers under the following scenarios:

1. For use with AIN based services developed by the service provider where the AIN service logic has been certified by Verizon and deployed on Verizon's AIN SCP. In this case, the trigger launches a query over the same SS7 network infrastructure Verizon uses to a Verizon SCP to obtain call processing instructions.

2. For use with AIN based service logic developed by Verizon and resident on Verizon's AIN SCP. In this case, the trigger launches a query over the same SS7 network infrastructure Verizon uses to a Verizon SCP to obtain call processing instructions.

3. For use with AIN based service logic that is resident in the service provider's SCP. In this case, the trigger launches a query over the SS7 network interconnection to the service provider's SCP for call processing instructions.

Scenarios 1 and 2 above apply in both Verizon-North and Verizon South. In addition, scenario 3 applies only in the Verizon-North states of New York and Massachusetts.

Detailed Information

Trigger descriptions can be found in Bellcore document GR-1298-CORE, Issue 3, July 1995, Revision 1, November 1996 titled AINGR: Switching Systems, SSP Processing of Triggers and Requested Events, General Procedures.