Cisco Systems 8841 Manual De Usuario
C H A P T E R
14
Troubleshooting
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General Troubleshooting Information
The following table provides general troubleshooting information for the Cisco IP Phone.
Table 41: Cisco IP Phone troubleshooting
Explanation
Summary
Cisco does not support connecting an IP phone to another IP Phone
through the PC port. Each IP Phone should connect directly to a switch
port. If phones are connected together in a line by using the PC port,
the phones do not work.
through the PC port. Each IP Phone should connect directly to a switch
port. If phones are connected together in a line by using the PC port,
the phones do not work.
Connecting a Cisco IP Phone to
another Cisco IP Phone
another Cisco IP Phone
A prolonged Layer 2 broadcast storm (lasting several minutes) on the
voice VLAN may cause IP phones to reset, lose an active call, or be
unable to initiate or answer a call. Phones may not come up until a
broadcast storm ends.
voice VLAN may cause IP phones to reset, lose an active call, or be
unable to initiate or answer a call. Phones may not come up until a
broadcast storm ends.
Prolonged broadcast storms cause IP
phones to reset, or be unable to make
or answer a call
phones to reset, or be unable to make
or answer a call
Cisco IP Phone 8811, 8841, 8851, and 8861 Administration Guide for Cisco Unified Communications Manager 10.5
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