0:24
Telephone - Siemens W48 Wandapparat 1934 - ringing - USA standard 3.
0:24
Telephone - Siemens W48 Wandapparat 1934 - ringing - USA standard 2.
0:24
Telephone - Siemens W48 Wandapparat 1934 - ringing - USA standard 1.
0:06
Telephone - Siemens W48 Wandapparat 1934 - ringing once 3.
0:06
Telephone - Siemens W48 Wandapparat 1934 - ringing once 2.
0:06
Telephone - Siemens W48 Wandapparat 1934 - ringing once 1.
0:19
Telephone - Siemens W48 Wandapparat 1934 - long ringing - generated with 90 Hz signal.
0:21
Telephone - Siemens W48 Wandapparat 1934 - long ringing - generated with 25 Hz signal.
0:22
Telephone - Siemens W48 Wandapparat 1934 - long ringing - generated with 20 Hz signal.
0:20
Telephone - Siemens W48 Wandapparat 1934 - ringing - European standard 3.
0:20
Telephone - Siemens W48 Wandapparat 1934 - ringing - European standard 2.
0:22
Telephone - Siemens W48 Wandapparat 1934 - ringing - European standard 1.
0:13
Telephone - Siemens W48 Wandapparat 1934 - ringing - Australian standard 3.
0:15
Telephone - Siemens W48 Wandapparat 1934 - ringing - Australian standard 2.
0:14
Telephone - Siemens W48 Wandapparat 1934 - ringing - Australian standard 1.
0:25
Telephone - Siemens W48 (1948) - ringing - USA standard 3.
0:26
Telephone - Siemens W48 (1948) - ringing - USA standard 2.
0:27
Telephone - Siemens W48 (1948) - ringing - USA standard 1.
0:07
Telephone - Siemens W48 (1948) - ringing once 3.
0:06
Telephone - Siemens W48 (1948) - ringing once 2.