Cisco lists two causes for an 8800 phone that cannot obtain an IP address during startup: the phone is not on the same network or VLAN as the DHCP server, or the switch port is disabled.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco IP Phone 8800 Series
- Subsystem
- DHCP
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager - Troubleshooting — Cisco Systems · tier 2 current vendor documentation · Startup Problems > Cisco IP Phone Cannot Obtain IP Address
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting IP phones that do not get a voice VLAN or DHCP options: source note ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan. WarmTransfer. https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan
BibTeX
@misc{warmtransfer-claim-ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan,
title = {Troubleshooting IP phones that do not get a voice VLAN or DHCP options: source note ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan},
note = {Source note ip-phone-dhcp-vlan-troubleshooting-no-ip-dhcp-other-vlan, checked 2026-10-02}
}