ETSI - ETR 187
Human Factors (HF); Recommendation of Characteristics of Telephone Services Tones When Locally Generated in Telephony Terminals
active, Most Current
| Organization: | ETSI |
| Publication Date: | 1 January 1995 |
| Status: | active |
| Page Count: | 12 |
Document History
ETR 187
January 1, 1995
Human Factors (HF); Recommendation of Characteristics of Telephone Services Tones When Locally Generated in Telephony Terminals
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