Source note · Webex Calling PSTN options and selection
If emergency service address validation fails while configuring a premises-based or Cisco Calling Plan PSTN connection, an administrator may close the address screen and continue, and Cisco states that an unvalidated address may delay emergency call handling and may incur additional charges if calls are routed to an emergency relay centre.
Checked 2026-09-15
The validation failure will not prevent setting up the connection. If the ESA is not validated, emergency call handling may be delayed, and additional charges may apply if calls are routed to an emergency relay center.
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- PSTN connectivity
- Deployment
- not restricted
- Region
- not restricted
- Release range
- not restricted
- Checked
- 2026-09-15
Sources
- Configure trunks, route groups, and dial plans for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Change the emergency service address for a location, note following the procedure
Cite this note
APA
WarmTransfer. (2026, September 15). Webex Calling PSTN options and selection: source note wxpstn-esa-validation-failure-does-not-block-setup. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxpstn-esa-validation-failure-does-not-block-setup
BibTeX
@misc{warmtransfer-claim-wxpstn-esa-validation-failure-does-not-block-setup,
title = {Webex Calling PSTN options and selection: source note wxpstn-esa-validation-failure-does-not-block-setup},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxpstn-esa-validation-failure-does-not-block-setup},
note = {Source note wxpstn-esa-validation-failure-does-not-block-setup, checked 2026-09-15}
}