For Cisco IP Phone 8800 Series phones, Cisco offers a cloud upgrader for non-Webex call control at upgrade.cisco.com/e2m_converter_3rd, or a manual method that loads transition firmware and the conversion license through Unified CM TFTP and sets the Transition Authorization Rule in the phone's web interface.
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 · Conversion methods, Cloud Upgrader and UCM-based manual migration
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-conversion-methods-8800. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-cisco-conversion-methods-8800
BibTeX
@misc{warmtransfer-claim-teams-sip-gateway-setup-cisco-conversion-methods-8800,
title = {Setting up SIP Gateway for Cisco and Poly phones on Teams: source note teams-sip-gateway-setup-cisco-conversion-methods-8800},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-cisco-conversion-methods-8800},
note = {Source note teams-sip-gateway-setup-cisco-conversion-methods-8800, checked 2026-09-30}
}