# T1 chapter

Chapter notes for T1.

## 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
- Release notes: [What's new in Webex Calling](https://help.webex.com/article/278bz2) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/nkhozs6/Get-Started-with-Control-Hub](https://help.webex.com/article/nkhozs6/Get-Started-with-Control-Hub) — last checked 2026-10
- Vendor doc: [https://help.webex.com/en-us/article/fs78p5/Assign-organization-account-roles-in-Control-Hub](https://help.webex.com/en-us/article/fs78p5/Assign-organization-account-roles-in-Control-Hub) — last checked 2026-10
- Vendor doc: [https://help.webex.com/en-us/article/ajh6iy](https://help.webex.com/en-us/article/ajh6iy) — last checked 2026-10
- Vendor doc: [https://help.webex.com/en-us/article/njvdjf2/Configure-Webex-Calling-for-your-organization](https://help.webex.com/en-us/article/njvdjf2/Configure-Webex-Calling-for-your-organization) — last checked 2026-10
- Vendor doc: [https://help.webex.com/en-us/article/nuylwki/Control-Hub](https://help.webex.com/en-us/article/nuylwki/Control-Hub) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/z3elky/Devices-page-in-Control-Hub](https://help.webex.com/article/z3elky/Devices-page-in-Control-Hub) — last checked 2026-10
- Vendor doc: [https://developer.webex.com/docs/api/v1/workspace-locations](https://developer.webex.com/docs/api/v1/workspace-locations) — last checked 2026-10
- Vendor doc: [https://help.webex.com/en-us/article/x7l1qbb/Customized-roles-in-Control-Hub](https://help.webex.com/en-us/article/x7l1qbb/Customized-roles-in-Control-Hub) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/zqvufbb](https://help.webex.com/article/zqvufbb) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/lfu88u](https://help.webex.com/article/lfu88u) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/3211gv](https://help.webex.com/article/3211gv) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/n0rlwxe](https://help.webex.com/article/n0rlwxe) — last checked 2026-10
- Vendor doc: [https://help.webex.com/article/nyx7kubb](https://help.webex.com/article/nyx7kubb) — last checked 2026-10
- Vendor doc: [help.webex.com article 16gmxfb](https://help.webex.com/article/16gmxfb) — 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 760wbi](https://help.webex.com/article/760wbi) — last checked 2026-10
- Vendor doc: [help.webex.com article ngp4sr8](https://help.webex.com/article/ngp4sr8) — last checked 2026-10
- Vendor doc: [help.webex.com article oybc4fb](https://help.webex.com/article/oybc4fb) — last checked 2026-10
- Vendor doc: [help.webex.com article n3ijtao](https://help.webex.com/article/n3ijtao) — last checked 2026-10
- Vendor doc: [help.webex.com article njvdjf2](https://help.webex.com/article/njvdjf2) — last checked 2026-10
- Vendor doc: [help.webex.com article 9dmqgv](https://help.webex.com/article/9dmqgv) — last checked 2026-10
- Vendor doc: [help.webex.com article nvzzj7k](https://help.webex.com/article/nvzzj7k) — last checked 2026-10
- Vendor doc: [help.webex.com article n8iptxg](https://help.webex.com/article/n8iptxg) — last checked 2026-10
- Vendor doc: [help.webex.com article ajh6iy](https://help.webex.com/article/ajh6iy) — 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 d68vi1](https://help.webex.com/article/d68vi1) — last checked 2026-10
- Vendor doc: [help.webex.com article fs78p5](https://help.webex.com/article/fs78p5) — last checked 2026-10
- Vendor doc: [help.webex.com article frj1efb](https://help.webex.com/article/frj1efb) — last checked 2026-10
- Vendor doc: [help.webex.com article z84p2bb](https://help.webex.com/article/z84p2bb) — last checked 2026-10
- RFC: [RFC 8446 TLS 1.3](https://www.rfc-editor.org/rfc/rfc8446) — last checked 2026-10
- Vendor doc: [help.webex.com article wej14b](https://help.webex.com/article/wej14b) — last checked 2026-10
- Vendor doc: [help.webex.com article s0lk5g](https://help.webex.com/article/s0lk5g) — last checked 2026-10
- Vendor doc: [help.webex.com article WBX28754](https://help.webex.com/article/WBX28754) — last checked 2026-10

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