Flows
36 ladders. Each one is a teaching sketch of session setup and RTP, not a customer capture.
What the CPaaS section actually says
Moving packet
Twilio and Vonage, from the articles
Moving packet
Bandwidth, Sinch, Telnyx, Infobip, and Bird
Moving packet
What SIP is for
Moving packet
Offer, answer, and SDP
Moving packet
RTP, SRTP, and WebRTC
Moving packet
E.164 numbers and direct inward dial
Moving packet
Two domains and a SIP trunk
Moving packet
How a guide tells you to get a number
Moving packet
SMS, and the 160-character line
Moving packet
MMS and the media a page will store
Moving packet
10DLC is a name on the compliance pages
Moving packet
A, B, and C on the STIR article
Moving packet
SHAKEN, PASSporT, and the Identity header
Moving packet
Where the vendors put the same words
Moving packet
E911, the PSAP, and NG911
Moving packet
Twilio's emergency calling page
Moving packet
Bandwidth's two emergency hosts
Moving packet
Voice and video names that opened
Moving packet
Messaging and verify
Moving packet
One Plivo number that really was on the page
Moving packet
Webhooks come inbound
Moving packet
TwiML verbs and what an IVR is
Moving packet
A ladder you are allowed to draw
Moving packet
Contact center words that stay general
Moving packet
AI voice agents, only the sentences that opened
Moving packet
Bridges the open pages actually name
Moving packet
Numbers you may repeat
Moving packet
What observability meant on the pages
Moving packet
Prices that stay confirm
Moving packet
Compliance starts by not pasting a secret
Moving packet
Leaving a PBX without inventing a cutover
Moving packet
Avaya, UCCE, and the pages that did not open
Moving packet
FreeSWITCH and Asterisk
Moving packet
Kamailio is a SIP server
Moving packet
LiveKit, Jitsi, Matrix, and Jami
Moving packet
Sources and go deeper
Opened 2026-10. A row marked confirm has no link, because that page was not verified.
- RFC. RFC 3261, SIP last checked 2026-10
- RFC. RFC 3550, RTP last checked 2026-10
- Wikipedia. Platform as a service, Communications platform as a service section last checked 2026-10
- Twilio. Twilio docs home last checked 2026-10
- Confirm. Release-specific steps for this page. confirm. last checked 2026-10