Verifying Dns Settings; Verifying Cisco Unified Callmanager Settings - Cisco 7906G Administration Manual

Chapter 9 Troubleshooting and Maintenance

Verifying DNS Settings

Verifying Cisco Unified CallManager Settings

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager 5.1
OL-11515-01
On the Cisco Unified IP Phone, press the Applications Menu button, then select
Settings > Network Configuration, and look at the following options:
DHCP Server—If you have assigned a static IP address to the phone, you do
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not need to enter a value for the DHCP Server option. However, if you are
using a DHCP server, this option must have a value. If it does not, check your
IP routing and VLAN configuration. Refer to Troubleshooting Switch Port
Problems, available at this URL:
http://www.cisco.com/warp/customer/473/53.shtml
IP Address, Subnet Mask, Default Router—If you have assigned a static IP
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address to the phone, you must manually enter settings for these options. See
the "Network Configuration Menu" section on page 4-7
If you are using DHCP, check the IP addresses distributed by your DHCP server.
Refer to Understanding and Troubleshooting DHCP in Catalyst Switch or
Enterprise Networks, available at this URL:
http://www.cisco.com/warp/customer/473/100.html#41
If you are using DNS to refer to the TFTP server or to Cisco Unified CallManager,
you must ensure that you have specified a DNS server. Verify this setting by
pressing the Applications Menu button and selecting Settings > Network
Configuration > DNS Server 1. You should also verify that there is a CNAME
entry in the DNS server for the TFTP server and for the
Cisco Unified CallManager system.
You must also ensure that DNS is configured to do reverse look-ups.
On the Cisco Unified IP Phone, press the Applications Menu button and select
Settings > Network Configuration > CallManager 1–5. The
Cisco Unified IP Phone attempts to open a TCP connection to all the
Cisco Unified CallManager servers that are part of the assigned
Cisco Unified CallManager group. If none of these options contain IP addresses
or show Active or Standby, the phone is not properly registered with
Cisco Unified CallManager. See the
Cisco Unified CallManager" section on page 9-7
problem.
Resolving Startup Problems
"Registering the Phone with
for tips on resolving this
for instructions.
9-5