4 ms·
It is how the old copper PSTN network worked, and if you are lucky enough to still have an actual copper PSTN phone line it is still true.
by pwg 8y ago
It is how the old copper PSTN network worked, and if you are lucky enough to still have an actual copper PSTN phone line it is still true.
- Rjevski 8y agoMy argument was that even if you did have an “actual” copper line it would eventually be terminated at a device that speaks analog phone line on one end and spits out SIP on the other end. This specific hanging-up behaviour was an artifact of older analog switches and I didn’t think they would emulate it in the software-based SIP switches but according to the comment above it’s still the case.