Telecommunications engineer working on a digital land line for a digital radio and data relay system that is using ISDN (integrated services digital network) technology | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Maximilian Stock |
Taille de l’image : | 4380 px × 3210 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : |
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