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Three PSTN choices, one per location
Webex Calling offers Cisco Calling Plan, Cloud Connected PSTN, or premises-based PSTN through a Local Gateway. A location has one PSTN connection.
Learn in 5 minutes
- Name the three PSTN choices
- Give a location one connection
- Keep Cloud Connected PSTN distinct from Local Gateway
Visual
Configure the location in the organization PSTN article.
Worked example
Name this ladder Step the call. Which PSTN model is on the wire here?
- Play the four hops.
- Find 203.0.113.20 and 192.0.2.40.
- Match the path to premises-based PSTN.
Vendor menus, ports, and license names change. Confirm before relying on a sentence that is not an RFC.
Fault
Calls from one location sometimes leave through a cloud PSTN partner and sometimes through the Local Gateway. The design enabled both.
The organization article allows one connection for the location.
Quiz
Ecosystem
Glossary, sister systems, and the integration seam for this room.
Analytics Amazon Connect can attach conversational analytics to an external voice system with a SIPREC connector. The analytics plane is not a second SIP proxy for the customer call.
Sources and go deeper
- Configure Webex Calling PSTN — last checked 2026-10
- Get started with Local Gateway — last checked 2026-10
- Webex Calling trunks and dial plans — last checked 2026-10