telephony

Security & Identity · 2 min read · 2022-06-01

A Phone Number Is a Communication Address, Not a Complete Identity

We often treat a phone number as if it were a permanent identity. In reality, it is a communication address whose user can change, whose access can be lost, and whose presentation can be misleading.

identity telephony

Perspectives · 10 min read · 2022-03-10

RTP Timestamps Are Not Wall Clocks

A packet can arrive at 09:17:25 and carry an RTP timestamp like 2873419200. Those values describe different things. Confusing them is one of the fastest ways to make real-time audio timing harder than it already is.

RTP audio jitter telephony timing