Source note · Webex Calling device onboarding and activation codes
Before registering, the phone resolves a _sips._tcp SRV record for its Webex Calling access SBC domain; a DNS resolution failure is a documented cause of registration failure.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Webex Calling with MPP phones
- Subsystem
- SIP registration
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- as documented 2024-04-18
- Checked
- 2026-09-25
Sources
- Troubleshoot MPP Phone in WxC for Provision and Registration — Cisco Systems · tier 2 current vendor documentation · registration process section and troubleshooting indicators (Couldn't resolve host)
Cite this note
APA
WarmTransfer. (2026, September 25). Webex Calling device onboarding and activation codes: source note webex-calling-device-onboarding-reg-srv-lookup. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-calling-device-onboarding-reg-srv-lookup
BibTeX
@misc{warmtransfer-claim-webex-calling-device-onboarding-reg-srv-lookup,
title = {Webex Calling device onboarding and activation codes: source note webex-calling-device-onboarding-reg-srv-lookup},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/webex-calling-device-onboarding-reg-srv-lookup},
note = {Source note webex-calling-device-onboarding-reg-srv-lookup, checked 2026-09-25}
}