Cisco Cisco Token Ring Port Adapters Troubleshooting Guide

This documents describes how to custom-make Cisco IP Phone Console Cable that is used to
collect phone logs directly from the console port.

The phone debug logs are collected using three different methods:

Console logs from web access

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Debug mode through Secure Shell (SSH) access

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Console Port of Phone

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Use methods one and two only, when the phone is reachable over an IP. At times, web access or
SSH access is not available due to network security, for example Firewall Policies.

Method three is useful in troubleshooting scenarios, in which logs need to be collected during the
phone bootup or before the phone IP is reachable, like:

Troubleshooting phone DHCP issues

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VPN issue

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Phone reachability or security issues.

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A console cable is used in these situations.

Two types of console ports are available on Cisco phones, depending upon the model.

USB console port on phone models 99XX and 8961

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A six pin AUX port on phones models 79XX and 78XX

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Note: Phone model 88XX has both USB and AUX ports.