1. OVERVIEW FOR TIA-470 STANDARDS The TIA-470 structure is provided in the "Document Structure for TIA-470" clause of this document. This structure provides improved document flexibility, allowing revisions of each particular Section to be handled in a more efficient process. This enables additional requirements to be developed and placed into the new document structure without having the entire document revised.

2. DOCUMENT STRUCTURE FOR TIA-470 The TIA-470 document is published as a series of sub-documents each containing information pertaining to a particular aspect of performance. The sub-document number listed does not include the current revision suffix (e.g. "-A", "-B", etc.). The reader should check for the most recent version of each subdocument.

2.1. SUB-DOCUMENT TIA-470.000, OVERVIEW OF PERFORMANCE STANDARDS FOR ANALOG TELEPHONES This sub-document provides an overview of the analog telephone performance standards and contains a detailed listing of the sub-documents.

2.2. SECTION TIA-470.100, ACOUSTIC TRANSMISSION PERFORMANCE REQUIREMENTS FOR ANALOG TELEPHONES This Section contains the Acoustic Transmission Performance Requirements for Analog Telephones and includes the following sub-documents:

• TIA-470.110 Handset Acoustic Performance Requirements for Analog Telephones
• TIA-470.120 Speakerphone Acoustic Performance Requirements for Analog Telephones
• TIA-470.130 Transmission Requirements For Analog Telephones with Headsets

2.3. SECTION TIA-470.200, ELECTRICAL-INTERFACE PERFORMANCE REQUIREMENTS FOR ANALOG TELEPHONES This Section contains the Electrical-Interface Performance Requirements for Analog Telephones and includes the following sub-documents:

• TIA-470.210 Resistance and Impedance Performance Requirements for Analog Telephones
• TIA-470.220 Alerter Acoustic Output Performance Requirements for Analog Telephones
• TIA-470.230 Network Signaling Performance Requirements for Analog Telephones.

2.4. SECTION TIA-470.300, TELEPHONY FEATURES PERFORMANCE REQUIREMENTS FOR ANALOG TELEPHONES This Section contains the Telephony Features Performance Requirements for Analog Telephones and includes the following sub-documents:

• TIA-470.310 Cordless Telephone Range Measurement Procedures
• TIA-470.320 Cordless Telephone Operation and Feature Performance Requirements
• TIA-470.330 Telephone Answering Device Performance Requirements