Introduction; Tone-Set Profiles - Patton electronics SmartNode Series Software Configuration Manual

26 • Tone configuration

Introduction

This chapter gives an overview of SmartWare call-progress-tone profiles and tone-set profiles and describes the
tasks involved in their configuration.
In-band tones keep the user informed about the state of his call or additional services such as call-waiting, hold
etc. Other tones can be related to any "event" that can occur during a call, for example a call waiting indication
etc. The In-band tones are referred to as "call-progress-tones". Call-progress-tones could be defined for differ-
ent use, for tone-set profiles and for MGCP events.
Tone-set profiles
In traditional PSTN networks the in-band tones (dial tone, alerting tone, busy tone) are generated by the net-
work, i.e. the Central Office switch or a similar device, and are relayed transparently by the SmartNode. In
voice over IP networks however this model of a network side providing services including in-band tones is not
given in all situations. For example two SmartNodes may be connected directly to each other over the access
network without the intervention of a traditional Central Office switch. This imposes the need to generate the
local in-band tones directly on the gateways (SmartNodes) since none of the attached ISDN devices (PBXs,
phones) will do so itself (ISDN USR side). The in-band tones that can be generated by the SmartNode are the
following:
• Dial tone—Tone you hear when you lift the handset and the network is ready to accept the dialed digits of
the called party number.
• Alerting tone—Tone you hear when the called party number is complete and the remote extension is ringing.
• Busy tone—Tone you hear when the remote extension is busy.
The three call-progress-tones are collected in a tone-set profile. A tone-set profile collects typically all the required
tones for one country. The tone-set profile is assigned to a CS context and applies to all PSTN interfaces on the
CS context. If it is required to have different tones for individual PSTN interfaces, the tone-set profile could be
assigned directly to a PSTN interface. Doing so will override the configuration in the CS context.
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SmartWare Software Configuration Guide

Introduction