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CHAPTER
9-1
Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
OL-4277-01
9
Troubleshooting the
Cisco IP Phone Models 7905G and
7912G
This chapter describes some basic testing and troubleshooting procedures for the
Cisco IP Phone models 7905G and 7912G. It contains the following sections:
• General Troubleshooting Tips, page 9-1
• Resolving Problems, page 9-2
• Contacting TAC, page 9-5
• Debugging, page 9-5
General Troubleshooting Tips
The suggestions in this section are general troubleshooting tips.
• If using a Dynamic Host Configuration Protocol (DHCP) server, make sure
that it is operating correctly. The DHCP server should show an incoming
request from the MAC address listed on the product label.
• If you do not see the status screen after you connect the Ethernet cable, make
sure the power cord and the Ethernet connection are secure.
• If you do not hear a dial tone, make sure that the telephone-handset line cord
is plugged into the Cisco IP Phone port. Also make sure that the appropriate
Ethernet cable (crossover or straight-through) is used, and that all cable
connections are secure.