Cisco Cisco Unified MeetingPlace 7.0 Manuale Tecnico
Toll−Fraud Prevention Feature in IOS Release
15.1(2)T
15.1(2)T
Document ID: 112083
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Prerequisites
Requirements
Components Used
Conventions
Behavior Before 15.1(2)T
Behavior with 15.1(2)T and Later Releases
How to Identify if TOLLFRAUD_APP is Blocking Your Call
How to Return to Pre−15.1(2)T Behavior
Contact the Cisco Technical Assistance Center
Related Information
Behavior with 15.1(2)T and Later Releases
How to Identify if TOLLFRAUD_APP is Blocking Your Call
How to Return to Pre−15.1(2)T Behavior
Contact the Cisco Technical Assistance Center
Related Information
Introduction
A new feature has been introduced in Cisco IOS® Software Release 15.1(2)T to guard against the incidence
of toll−fraud on Voice GateWays (VGWs) installed with Cisco IOS. Starting with IOS 15.1(2)T and newer
releases of IOS based on this version, the toll−fraud prevention settings are the default behavior of Cisco
IOS−based VGWs.
of toll−fraud on Voice GateWays (VGWs) installed with Cisco IOS. Starting with IOS 15.1(2)T and newer
releases of IOS based on this version, the toll−fraud prevention settings are the default behavior of Cisco
IOS−based VGWs.
The purpose of this document is to raise awareness of this new feature, as upgrading to this release will
require additional configuration to permit certain types of voice calls to be placed and route to completion. It
is important to note that upgrading to 15.1(2)T will block all inbound VoIP call setups until the VGW is
properly configured to trust these sources. Any plans to upgrade to releases with this feature must include
extra steps to configure trusted VoIP hosts after the upgrade in order for calls to route successfully.
Additionally, two−stage dialing is no longer enabled by default with this release.
require additional configuration to permit certain types of voice calls to be placed and route to completion. It
is important to note that upgrading to 15.1(2)T will block all inbound VoIP call setups until the VGW is
properly configured to trust these sources. Any plans to upgrade to releases with this feature must include
extra steps to configure trusted VoIP hosts after the upgrade in order for calls to route successfully.
Additionally, two−stage dialing is no longer enabled by default with this release.
Prerequisites
Requirements
This document assumes that the reader already has a working knowledge on voice gateway configuration, as
well as fundamental knowledge on how to debug voice call failures.
well as fundamental knowledge on how to debug voice call failures.
Components Used
The document discusses configurations that apply to Cisco IOS Voice Gateways, which would include the
Integrated Services Routers (ISRs).
Integrated Services Routers (ISRs).
The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.