Source note · Voice VLAN and LLDP-MED and CDP and PoE for IP phones
If an administrator disables on the phone the protocol the switch locked power negotiation to, the Cisco 8800 phone cannot power accessories, because the switch ignores power requests in the other protocol.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco IP Phone 8800 Series
- Subsystem
- PoE negotiation
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager - Technical Details — Cisco Systems · tier 2 current vendor documentation · Technical Details > Network Protocols > Power Negotiation Over LLDP
Cite this note
APA
WarmTransfer. (2026, September 24). Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-8800-disabled-protocol-accessories. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-8800-disabled-protocol-accessories
BibTeX
@misc{warmtransfer-claim-voice-vlan-lldp-poe-8800-disabled-protocol-accessories,
title = {Voice VLAN and LLDP-MED and CDP and PoE for IP phones: source note voice-vlan-lldp-poe-8800-disabled-protocol-accessories},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-vlan-lldp-poe-8800-disabled-protocol-accessories},
note = {Source note voice-vlan-lldp-poe-8800-disabled-protocol-accessories, checked 2026-09-24}
}