 |
| |||
| C-Netz-Telekom m ('C-Netz' upgrade, otherwise identical, privacy protection by signalling measures and voice encryption, 1995) | |||
|
mobile network C : 2 phrases in 1 subject |
| Communications | 2 |
|
| |||
| C-Netz-Telekom m ('C-Netz' upgrade, otherwise identical, privacy protection by signalling measures and voice encryption, 1995) | |||
|
mobile network C : 2 phrases in 1 subject |
| Communications | 2 |