Engineering Committee TR-30 develops standards related to the functional, electrical and mechanical characteristics of interfaces between data circuit terminating equipment (DCE), data terminal equipment (DTE) and multiMedia gateways, the telephone and voice-over-Internet protocol (VoIP) networks, and other DCE and facsimile systems.
| Chair | PacketStorm Communications, Inc. | Jack Douglass |
| TIA Committee Lead | Teesha Jenkins |
| Committee Support | Standards Secretariat |
| TIA-232-F | Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Exchange |
| TIA-485 | Electrical Characteristics of Generators/Receivers in Balanced Digital Multipoint Systems |
| TIA-921-B | Electrical Characteristics of Generators/Receivers in Balanced Digital Multipoint Systems |
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