Verifying Ip Addressing And Routing; Verifying Dns Settings; Verifying Cisco Unified Callmanager Settings - Cisco 3951 Administration Manual

Chapter 7 Troubleshooting and Maintenance

Verifying IP Addressing and Routing

Verifying DNS Settings

Verifying Cisco Unified CallManager Settings

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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 OK button and choose Settings >
Network Configuration > DHCP Enabled.
DHCP Enabled—Verify that DHCP Enabled is set to yes. If it is not, check
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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 "Configuring Network Settings" section on page 4-3
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. 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.
On the Cisco Unified IP Phone, press the OK button and choose Settings >
Network Configuration > CallManager 1 - 6. 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 7-4
problem.
Cisco Unified SIP Phone 3951 Administration Guide for Cisco Unified CallManager 5.1
Resolving Startup Problems
for instructions.
"Registering the Phone with
for tips on resolving this
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