Source note · PRI and TDM gateway interworking
Cisco states that IOS XE 17.9.x and 17.12.x are the last release trains supported on the listed ISR 4000 platforms.
Checked 2026-09-24
The last supported IOS-XE Release trains will be the 17.9.x and 17.12.x
- Vendor
- Cisco
- Product
- ISR 4000 Series
- Subsystem
- software lifecycle
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as announced 2022-11-07
- Checked
- 2026-09-24
Sources
- End-of-Sale and End-of-Life Announcement for the Cisco ISR4200, ISR4300 and select ISR4400 Series Platform — Cisco Systems · tier 2 current vendor documentation · Notes following the milestones table
Cite this note
APA
WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-isr4k-last-iosxe-trains. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-isr4k-last-iosxe-trains
BibTeX
@misc{warmtransfer-claim-legacy-pri-tdm-isr4k-last-iosxe-trains,
title = {PRI and TDM gateway interworking: source note legacy-pri-tdm-isr4k-last-iosxe-trains},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-isr4k-last-iosxe-trains},
note = {Source note legacy-pri-tdm-isr4k-last-iosxe-trains, checked 2026-09-24}
}