No products
View larger
New product
This document defines the stage 1 of the Freephone (FPH) supplementary service.
| Author | DIN |
|---|---|
| Editor | DIN |
| Document type | Standard |
| Format | File |
| ICS | 33.080 : Integrated Services Digital Network (ISDN)
|
| Number of pages | 20 |
| Cross references | ETS 300208 (1996-03), IDT |
| Year | 1990 |
| Document history | |
| Country | Germany |
| Keyword | 300208 |