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Touch-Tone or Rotary Signaling Feature

Description

System Requirements for TTRs Table

System Requirements for TTRs Table is based on the assumption that the system already has basic telephones, Remote Access, and tie trunks.

System Requirements for TTRs

If one or more voice messaging systems is used, additional TTRs are needed (see TTRs Required by Voice Messaging Systems/Auto Attendants Table).

Topics
	Description
	Touch-Tone Receiver (TTR) System Requirements for TTRs Table TTRs Required by Voice Messaging Systems/Auto Attendants Table TTRs Required for Primary Delay Announcement Devices When Using Prompt-Based Overflow Table TTRs Required for Secondary Delay Announcement Devices When Using Prompt-Based Overflow Table Steps to Calculate Required TTRs TTR Settings
	At a Glance
	Considerations & Constraints
	System Programming
	Mode Differences