# T2-R02 citation ledger

Mirrors the cites section of the room. Retrieved 2026-10-14 unless the entry says otherwise. No public Drive links.

1. Configure Webex Calling for your organization — help.webex — article njvdjf2 — help.webex.com article njvdjf2 — retrieved 2026-10-14.
2. Configure trunks, route groups, and dial plans for Webex Calling — help.webex — article n0xb944 — help.webex.com article n0xb944 — retrieved 2026-10-14.
3. Get started with Local Gateway — help.webex — article t9xctu — help.webex.com article t9xctu — retrieved 2026-10-14.
4. Configure Local Gateway on Cisco IOS XE for Webex Calling — help.webex — article jr1i3r — help.webex.com article jr1i3r — retrieved 2026-10-14.
5. BRKCOL-2312 — Local Gateway and Survivability Gateway material (deck text: endpoint registration is not proxied; trunk types; SGW) — Cisco Live 2025 — ciscolive.com global-event 2025 PDF. re-check (event year 2025; confirm session title on the title slide).
6. Get Started with the Cisco Calling Plans — help.webex — article nousk9ab — help.webex.com article nousk9ab — retrieved 2026-10-14.
7. Webex Calling PSTN options at-a-glance — Cisco/Webex PDF cm-5770 — webex.com content dam … cm-5770.pdf — retrieved 2026-10-14. Market counts need re-check.
8. Configuring a Partner Hosted Gateway — help.webex — article noei0ug — help.webex.com article noei0ug — retrieved 2026-10-14.
9. BRKCOL-2812 — Webex Calling PSTN architecture, registration and certificate trunks, firewall note — Cisco Live 2024 — ciscolive.com global-event 2024 PDF. re-check Ports in the deck are not a build source.
10. Security requirements for Webex Calling (certificate FQDN, CA bundle, EKU) — help.webex — article jwkbt2 — help.webex.com article jwkbt2 — retrieved 2026-10-14.
11. Prepare your environment for Webex Calling — help.webex — article n4cprps — help.webex.com article n4cprps — retrieved 2026-10-14. Points at the ordering guide and CA bundle steps.
12. Webex Contact Center Architecture — help.webex — article utqcm7 — used only for the cross-track sentence on contact-center PSTN. Full treatment is T3-R01. help.webex.com article utqcm7.
13. Webex Dedicated Instance Contact Center integration — help.webex — article nmhk7ve — certificate trunks required for DI to multi-tenant contact-center support; registration-based trunks no longer supported on that interop. help.webex.com article nmhk7ve — retrieved 2026-10-14.
14. Enhanced emergency calling for Webex Calling — help.webex — article av6oo3 — https://help.webex.com/article/av6oo3 — retrieved 2026-10-14. RedSky hosts, port 443, HELD/HELD+, RAY BAUM’S Act Phase 2 (January 2022), Kari’s Law email.
15. Configure emergency call notifications in Control Hub — help.webex — article nj0abhbb — https://help.webex.com/article/nj0abhbb — retrieved 2026-10-14. Disabled by default. Organization path Services → PSTN & Routing → Settings. Location path Management → Locations. Test number 933 does not alert public safety.
16. Manage call recording for Webex Calling — help.webex — article nhvl4hw — https://help.webex.com/article/nhvl4hw — retrieved 2026-10-14. Select the provider before enabling users. Webex retention one year and 100 GB. Dubber Go 30 days, user portal. Webhooks can notify on Webex call recordings; event names not stated.
17. Emergency Services Settings — developer.webex — https://developer.webex.com/calling/docs/api/v1/emergency-services-settings — retrieved 2026-10-14. ECBN for extension-only users: location default or another number from that location. Endpoint-specific OAuth scopes were not isolated from the site-wide scope catalog.


Pass 8: device-type dropdown, ECBN menu labels, OAuth scopes, peer emergency checkboxes, Calling-to-CUCM retention, PSTN SKUs, and the live country list are not claimed. Phone source ports 5060–5280 are not called TCP; the devices protocol cell on b2exve is blank. TODO-verify 9 to 0.

Pass 7 RedSky re-check. nvfbjts (header September 08, 2024) still holds the admin steps: 933, then Enhanced emergency calling. mwjlgk (header September 03, 2025, https://help.webex.com/article/mwjlgk) confirms the agent MyE911 host https://wxc.e911cloud.com and a verification email. It does not reprint the password length, Device User Id, the $0 add-on, or 933-then-activate. Those stay re-check. The 2026-10-14 av6oo3 extract had no header date and is not treated as a replacement.

## Sources and go deeper

Checked links were opened this month. A confirm row has no address because that page was not opened.

- Wikipedia: [Webex (Wikipedia)](https://en.wikipedia.org/wiki/Webex) — last checked 2026-10
- Vendor doc: [Webex Help Center](https://help.webex.com/) — last checked 2026-10
- DevDocs: [Webex developer documentation](https://developer.webex.com/) — last checked 2026-10
- DevDocs: [Webex developer getting started](https://developer.webex.com/docs/getting-started) — last checked 2026-10
- Community: [Webex community](https://help.webex.com/community) — last checked 2026-10
- SRND: [Cisco Collaboration design zone](https://www.cisco.com/c/en/us/solutions/enterprise/design-zone-collaboration/index.html) — last checked 2026-10
- RFC: [RFC 3261 SIP: Session Initiation Protocol](https://www.rfc-editor.org/rfc/rfc3261) — last checked 2026-10
- Port table: [IANA service name and port number registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) — last checked 2026-10
- Port table: [Port reference for Webex Calling](https://help.webex.com/article/b2exve) — last checked 2026-10
- RFC: [RFC 3263 Locating SIP Servers](https://www.rfc-editor.org/rfc/rfc3263) — last checked 2026-10
- RFC: [RFC 3264 An Offer/Answer Model with SDP](https://www.rfc-editor.org/rfc/rfc3264) — last checked 2026-10
- Wikipedia: [Session Initiation Protocol (Wikipedia)](https://en.wikipedia.org/wiki/Session_Initiation_Protocol) — last checked 2026-10
- RFC: [RFC 3550 RTP](https://www.rfc-editor.org/rfc/rfc3550) — last checked 2026-10
- RFC: [RFC 3711 SRTP](https://www.rfc-editor.org/rfc/rfc3711) — last checked 2026-10
- RFC: [RFC 4566 SDP](https://www.rfc-editor.org/rfc/rfc4566) — last checked 2026-10
- RFC: [RFC 4733 RTP payload for DTMF](https://www.rfc-editor.org/rfc/rfc4733) — last checked 2026-10
- Wikipedia: [Real-time Transport Protocol (Wikipedia)](https://en.wikipedia.org/wiki/Real-time_Transport_Protocol) — last checked 2026-10
- Release notes: [What's new in Webex Calling](https://help.webex.com/article/278bz2) — last checked 2026-10
- Vendor doc: [help.webex.com article njvdjf2](https://help.webex.com/en-us/article/njvdjf2/Configure-Webex-Calling-for-your-organization) — last checked 2026-10
- Vendor doc: [help.webex.com article n0xb944](https://help.webex.com/article/n0xb944) — last checked 2026-10
- Vendor doc: [help.webex.com article t9xctu](https://help.webex.com/en-us/article/t9xctu/Get-started-with-Local-Gateway) — last checked 2026-10
- Vendor doc: [help.webex.com article jr1i3r](https://help.webex.com/en-us/article/jr1i3r) — last checked 2026-10
- Vendor doc: [ciscolive.com global-event 2025 PDF](https://www.ciscolive.com/c/dam/r/ciscolive/global-event/docs/2025/pdf/BRKCOL-2312.pdf) — last checked 2026-10
- Vendor doc: [help.webex.com article nousk9ab](https://help.webex.com/article/nousk9ab) — last checked 2026-10
- Vendor doc: [webex.com content dam … cm-5770.pdf](https://www.webex.com/content/dam/wbx/us/aag/webex_calling_pstn_options_cm-5770.pdf) — last checked 2026-10
- Vendor doc: [help.webex.com article noei0ug](https://help.webex.com/article/noei0ug) — last checked 2026-10
- Vendor doc: [ciscolive.com global-event 2024 PDF](https://www.ciscolive.com/c/dam/r/ciscolive/global-event/docs/2024/pdf/BRKCOL-2812.pdf) — last checked 2026-10
- Vendor doc: [help.webex.com article jwkbt2](https://help.webex.com/article/jwkbt2) — last checked 2026-10
- Vendor doc: [help.webex.com article n4cprps](https://help.webex.com/en-us/article/n4cprps/Prepare-Your-Environment-for-Webex-Calling) — last checked 2026-10
- Vendor doc: [help.webex.com article utqcm7](https://help.webex.com/article/utqcm7) — last checked 2026-10
- Vendor doc: [help.webex.com article nmhk7ve](https://help.webex.com/article/nmhk7ve/Webex-Dedicated-Instance-Contact-Center-integration) — last checked 2026-10
- Vendor doc: [help.webex.com article av6oo3](https://help.webex.com/article/av6oo3) — last checked 2026-10
- Vendor doc: [help.webex.com article nj0abhbb](https://help.webex.com/article/nj0abhbb) — last checked 2026-10
- Vendor doc: [help.webex.com article nhvl4hw](https://help.webex.com/article/nhvl4hw) — last checked 2026-10
- Vendor doc: [developer.webex.com calling emergency-services-settings](https://developer.webex.com/calling/docs/api/v1/emergency-services-settings) — last checked 2026-10
- Vendor doc: [developer.webex.com calling call-control](https://developer.webex.com/calling/docs/call-control) — last checked 2026-10
- Vendor doc: [list events](https://developer.webex.com/admin/docs/api/v1/events/list-events) — last checked 2026-10
- Vendor doc: [help.webex.com article nbedetf](https://help.webex.com/article/nbedetf) — last checked 2026-10
- Vendor doc: [help.webex.com article n1ku0vfb](https://help.webex.com/article/n1ku0vfb) — last checked 2026-10
- Vendor doc: [help.webex.com article nvfbjts](https://help.webex.com/article/nvfbjts) — last checked 2026-10
- Vendor doc: [help.webex.com article mwjlgk](https://help.webex.com/article/mwjlgk) — last checked 2026-10