Verifying Ip Addressing And Routing; Verifying Dns Settings; Verifying Cisco Unified Communications Manager Settings - Cisco 7970G - IP Phone VoIP Administration Manual

Chapter 9 Troubleshooting and Maintenance

Verifying IP Addressing and Routing

Verifying DNS Settings

Verifying Cisco Unified Communications Manager Settings

Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
OL-14626-01
You should verify the IP addressing and routing settings on the phone. If you are
using DHCP, the DHCP server should provide these values. If you have assigned
a static IP address to the phone, you must enter these values manually.
On the Cisco Unified IP Phone, press the Settings button, choose Network
Configuration, and look at the following options:
DHCP Server—If you have assigned a static IP address to the phone, you do
•
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
•
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 Communications Manager, you must ensure that you have
specified a DNS server. Verify this setting by pressing the Settings button on the
phone, choosing Network Configuration, and scrolling to the DNS Server 1
option. You should also verify that there is a CNAME entry in the DNS server for
the TFTP server and for the Cisco Unified Communications Manager system.
You must also ensure that DNS is configured to do reverse look-ups.
On the Cisco Unified IP Phone, press the Settings button, choose Network
Configuration, and look at the Communications Manager 1–5 options. The
Cisco Unified IP Phone attempts to open a TCP connection to all the
Cisco Unified Communications Manager servers that are part of the assigned
Resolving Startup Problems
for instructions.
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