Because the old provider's removal of switch translations is a separate step that follows NPAC activation, there is a window after activation in which calls originating on the old provider's own switch can still terminate there unless a 10-digit unconditional trigger forces a database query.
inferred · Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- old-provider-disconnect
- Deployment
- pstn
- Region
- us
- Release range
- current as of 2026-10-02
- Status
- inferred
- Checked
- 2026-10-02
Sources
- LSR portal support — Lumen Technologies · tier 2 current vendor documentation · Order processing procedures, steps 4-7 (reasoned from sequence)
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-stale-translation-window. WarmTransfer. https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-stale-translation-window
BibTeX
@misc{warmtransfer-claim-post-port-routing-troubleshooting-stale-translation-window,
title = {Troubleshooting calls that fail to ported numbers after cutover: source note post-port-routing-troubleshooting-stale-translation-window},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/post-port-routing-troubleshooting-stale-translation-window},
note = {Source note post-port-routing-troubleshooting-stale-translation-window, checked 2026-10-02}
}