For Cisco IP Phone 8800 Series phones, Cisco states phones migrated with firmware later than 11.3.3 can revert to enterprise firmware without extra licensing via factory reset and UCM upgrade rules, while phones migrated with 11.2.3 need an MPP-to-enterprise license to revert.
Checked 2026-09-30
- Vendor
- Cisco
- Product
- Cisco IP Phone 8800 Series
- Subsystem
- Firmware conversion
- Deployment
- on-premises, multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Cisco IP Phone 7800 and 8800 Series firmware conversion guide (Enterprise to Multiplatform) — Cisco · tier 2 current vendor documentation · Reverting to enterprise firmware
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up SIP Gateway for Cisco and Poly phones on Teams: source note teams-sip-gateway-setup-cisco-revert-8800. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-cisco-revert-8800
BibTeX
@misc{warmtransfer-claim-teams-sip-gateway-setup-cisco-revert-8800,
title = {Setting up SIP Gateway for Cisco and Poly phones on Teams: source note teams-sip-gateway-setup-cisco-revert-8800},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-cisco-revert-8800},
note = {Source note teams-sip-gateway-setup-cisco-revert-8800, checked 2026-09-30}
}