3 Definitions and abbreviations

26.2313GPPCellular text telephone modemMinimum performance requirementsTS

For the purposes of this TS, the following abbreviations apply:

AMR Adaptive Multi Rate Codec

CTM Cellular Text Telephone Modem

FR Full Rate Codec

HCO Hearing Carry Over, (individual may be able to hear, but cannot speak); Alternating of sending speech and text.

MS Mobile Station

PCM Pulse Code Modulation

PCS Personal Communication System

TCER Total Character Error Rate

TTY Text Telephone

VCO Voice Carry Over, Alternating use of speech and text