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Cisco 7832 Troubleshooting Manual

Ip conference phone
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Troubleshooting

General Troubleshooting Information

The following table provides general troubleshooting information for the Cisco IP Phone.
Table 1: Cisco IP Phone Troubleshooting
Summary
Connecting a Cisco IP Phone to
another Cisco IP Phone
Prolonged broadcast storms cause IP
phones to reset, or be unable to make
or answer a call
Explanation
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.
Note
The Cisco 7832 conference phone does not have a PC
port.
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.
Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide
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  Summary of Contents for Cisco 7832

  • Page 1: Table Of Contents

    • Troubleshooting Procedures, page 8 • Additional Troubleshooting Information, page 9 General Troubleshooting Information The following table provides general troubleshooting information for the Cisco IP Phone. Table 1: Cisco IP Phone Troubleshooting Summary Explanation Connecting a Cisco IP Phone to...
  • Page 2 The RxSize and the TxSize statistics show the size of the voice packets phone and another device that are used in a conversation between this Cisco IP Phone and the other device. The values of these statistics should match. See...
  • Page 3: Startup Problems

    ◦ Disconnect a functioning Cisco IP Phone from another port and connect it to this network port to verify that the port is active. ◦ Connect the Cisco IP Phone that does not start up to a different network port that is known to be good.
  • Page 4 DHCP server, or the switch port to which the phone connects may be disabled. Solution Ensure that the network or VLAN to which the phone connects has access to the DHCP server, and ensure that the switch port is enabled. Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide...
  • Page 5: Phone Reset Problems

    If users report that their phones are resetting during calls or while the phones are idle on their desk, you should investigate the cause. If the network connection and Third Party Call Control connection are stable, a Cisco IP Phone should not reset.
  • Page 6: Phone Cannot Connect To Lan

    The physical connection to the LAN may be broken. Solution Verify that the Ethernet connection to which the Cisco IP Phone connects is up. For example, check whether the particular port or switch to which the phone connects is down and that the switch is not rebooting. Also ensure that no cable breaks exist.
  • Page 7: General Telephone Call Problems

    2 Audio server debug and capture logs are enabled for both phones. If needed, enable Java debug. Phone Does Not Recognize DTMF Digits or Digits Are Delayed Problem The user complains that numbers are missed or delayed when the keypad is used. Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide...
  • Page 8: Report All Phone Issues With The Configuration Utlility

    Report All Phone Issues with the Configuration Utlility If you are working with Cisco TAC to troubleshoot a problem, they typically require the logs from the Problem Reporting Tool to help resolve the issue. You can generate PRT logs using the Configuration Utlility and upload them to a remote log server.
  • Page 9: Additional Troubleshooting Information

    Third-Party Call Control. You must also ensure that DNS is configured to do reverse lookups. Additional Troubleshooting Information If you have additional questions about troubleshooting your phone, go to the following Cisco website and navigate to the desired phone model: https://www.cisco.com/cisco/web/psa/troubleshoot.html...
  • Page 10 Troubleshooting Additional Troubleshooting Information Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide...