| What the CPaaS section actually says | HTML sheet | T1-R01 |
| Twilio and Vonage, from the articles | HTML sheet | T1-R02 |
| Bandwidth, Sinch, Telnyx, Infobip, and Bird | HTML sheet | T1-R03 |
| What SIP is for | HTML sheet | T2-R04 |
| Offer, answer, and SDP | HTML sheet | T2-R05 |
| RTP, SRTP, and WebRTC | HTML sheet | T2-R06 |
| E.164 numbers and direct inward dial | HTML sheet | T3-R07 |
| Two domains and a SIP trunk | HTML sheet | T3-R08 |
| How a guide tells you to get a number | HTML sheet | T3-R09 |
| SMS, and the 160-character line | HTML sheet | T4-R10 |
| MMS and the media a page will store | HTML sheet | T4-R11 |
| 10DLC is a name on the compliance pages | HTML sheet | T4-R12 |
| A, B, and C on the STIR article | HTML sheet | T5-R13 |
| SHAKEN, PASSporT, and the Identity header | HTML sheet | T5-R14 |
| Where the vendors put the same words | HTML sheet | T5-R15 |
| E911, the PSAP, and NG911 | HTML sheet | T6-R16 |
| Twilio's emergency calling page | HTML sheet | T6-R17 |
| Bandwidth's two emergency hosts | HTML sheet | T6-R18 |
| Voice and video names that opened | HTML sheet | T7-R19 |
| Messaging and verify | HTML sheet | T7-R20 |
| One Plivo number that really was on the page | HTML sheet | T7-R21 |
| Webhooks come inbound | HTML sheet | T8-R22 |
| TwiML verbs and what an IVR is | HTML sheet | T8-R23 |
| A ladder you are allowed to draw | HTML sheet | T8-R24 |
| Contact center words that stay general | HTML sheet | T9-R25 |
| AI voice agents, only the sentences that opened | HTML sheet | T9-R26 |
| Bridges the open pages actually name | HTML sheet | T9-R27 |
| Numbers you may repeat | HTML sheet | T10-R28 |
| What observability meant on the pages | HTML sheet | T10-R29 |
| Prices that stay confirm | HTML sheet | T10-R30 |
| Compliance starts by not pasting a secret | HTML sheet | T11-R31 |
| Leaving a PBX without inventing a cutover | HTML sheet | T11-R32 |
| Avaya, UCCE, and the pages that did not open | HTML sheet | T11-R33 |
| FreeSWITCH and Asterisk | HTML sheet | T12-R34 |
| Kamailio is a SIP server | HTML sheet | T12-R35 |
| LiveKit, Jitsi, Matrix, and Jami | HTML sheet | T12-R36 |