3 ms·
But telcos can still run voice traffic over “sane” protocols (VoLTE and VoWIFI, for example, are both wrappers over SIP if I'm not mistaken – pretty complex, bu
by notpushkin 4y ago
But telcos can still run voice traffic over “sane” protocols (VoLTE and VoWIFI, for example, are both wrappers over SIP if I'm not mistaken – pretty complex, but still using modern tech). They don't have to be “dumb pipes”, but I don't think there's any need to claw into complicated legacy stuff any more than it is needed to interact with legacy systems.
Totally agree with the what we want part.
- phh 4y ago> VoLTE and VoWIFI, for example, are both wrappers over SIP if I'm not mistaken Not wrappers. VoLTE is literally SIP with extensions. And VoWiFi is literally VoLTE over IPSec/IKE with EAP auth, so SIP over IPSec. Really just bog standard stuffs. > – pretty complex, but still using modern tech Not sure about "modern", but yeah pretty much every actor uses SIP one way or another. It does have a few old stuff (one SIP extension of VoLTE is to allow SIP-negotiated IPSec tunnel. For HMAC it supports md5-96 and sha1-96 and that's all.), but nothing that makes you scream of over-complication.
- josh2600 4y agoYeah VoLTE and VoWiFi were just getting rolled out when I left telecom. It was all IMS and hacks on top of SS7 and stuff like that. WhatsApp really applied a ton of pressure to telcos and changed the game. Do you remember they an international sms in the US was $.60 per message before whatsapp?
- notpushkin 4y agoWell, relatively modern of course (2000 v. 1981 for SS7 :-)