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ITU-T I.253.1
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ITU-T I.253.1
Call completion supplementary services : Call waiting (CW) supplementary serviceMore info
| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.020 : Telecommunications in general
|
| Replace | ITU-T I.253.1 (1988-11) |
| Year | 1990 |
| Document history | ITU-T I.253.1 (1990-07) |
| Country | International |
| Keyword | CCITT I.253;CCITT I.253.1;ITU-T I.253;ITU-T 253;253;ITU-T I.253.1 |