Webex Calling devices that do not support HELD, such as Poly VVX/Trio and Yealink phones, are located by the caller ID sent with the emergency call rather than by network discovery.

Checked 2026-10-14

Vendor
Cisco
Product
Webex Calling
Subsystem
enhanced emergency calling
Deployment
multi-tenant
Region
us
Release range
current as of 2026-10-14
Checked
2026-10-14

Sources

Cite this note

APA

WarmTransfer. (2026, October 14). Network-based location for E911 across platforms: source note e911-network-location-discovery-wxc-non-held-callerid. WarmTransfer. https://warmtransfer.net/knowledge/claims/e911-network-location-discovery-wxc-non-held-callerid

BibTeX

@misc{warmtransfer-claim-e911-network-location-discovery-wxc-non-held-callerid,
  title  = {Network-based location for E911 across platforms: source note e911-network-location-discovery-wxc-non-held-callerid},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/e911-network-location-discovery-wxc-non-held-callerid},
  note   = {Source note e911-network-location-discovery-wxc-non-held-callerid, checked 2026-10-14}
}

Read in context