Factory Reset the Phone with the Keypad 440
Perform Factory Reset from Phone Menu 441
Factory Reset the Phone from Phone Web Page 441
Identify Phone Issues with a URL in the Phone Web Page 441
Technical Details 443
APPENDIX A
Physical and Operating Environment Specifications 443
Cable Specifications 444
Network and Computer Port Pinouts 444
Network Port Connector 445
Computer Port Connector 445
Phone Power Requirements 446
Power Outage 447
Power Reduction 447
Power Negotiation Over LLDP 447
Network Protocols 448
VLAN Interaction 451
External Devices 451
USB Port Information 452
SIP and NAT Configuration 452
SIP and the Cisco IP Phone 452
SIP Over TCP 453
SIP Proxy Redundancy 453
Dual Registration 453
Failover and Recovery Registration 454
RFC3311 454
SIP NOTIFY XML-Service 454
NAT Mapping with Session Border Controller 455
NAT Mapping with SIP-ALG Router 455
Cisco Discovery Protocol 455
LLDP-MED 455
Chassis ID TLV 457
Port ID TLV 457
Time to Live TLV 457
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
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