You're not mistaken, it's the dial tone from the old days when making a call to go online! Some time ago, I specifically bought a USB port modem for using electronic fax. It's driver-free, and surprisingly, it can also dial up to go online! Kunming Telecom, 16300 and 16388 can all be connected!
Recording environment is as follows
PC: Lenovo Yangtian
CPU: i5-4570
Motherboard chip: B85
Memory: 4G
Graphics card: HD8570
Hard drive: Western Digital 1T
Modem: Agere USB2.0
OS: Win8 x64 Pro VL
Network: Telecom ADSL 4M + fixed line
Recording software: Win8 Voice Recorder
Test time: 2014/7/4 15:30
Average speed: 44.0K
http://pan.baidu.com/s/1gdl9Xq7
Note:
1. When both broadband and narrowband are connected simultaneously, the system preferentially uses the narrowband network
2. Now for dial-up internet or ISDN, chatting is okay, but for web pages, basically only some simple ones can be opened. This forum is okay, but don't even think about Baidu Tieba and such
Recording environment is as follows
PC: Lenovo Yangtian
CPU: i5-4570
Motherboard chip: B85
Memory: 4G
Graphics card: HD8570
Hard drive: Western Digital 1T
Modem: Agere USB2.0
OS: Win8 x64 Pro VL
Network: Telecom ADSL 4M + fixed line
Recording software: Win8 Voice Recorder
Test time: 2014/7/4 15:30
Average speed: 44.0K
http://pan.baidu.com/s/1gdl9Xq7
Note:
1. When both broadband and narrowband are connected simultaneously, the system preferentially uses the narrowband network
2. Now for dial-up internet or ISDN, chatting is okay, but for web pages, basically only some simple ones can be opened. This forum is okay, but don't even think about Baidu Tieba and such