Verifying Ip Addressing And Routing; Verifying Dns Settings; Verifying Cisco Unified Communications Manager Settings - Cisco CP-3911 - Unified SIP Phone 3911 VoIP Administration Manual

Chapter 7 Troubleshooting and Maintenance

Verifying IP Addressing and Routing

Verifying DNS Settings

Verifying Cisco Unified Communications Manager Settings

Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
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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
•
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
Communications Manager, 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 Communications Manager 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 Communications
Manager servers that are part of the assigned Cisco Unified Communications
Manager group. If none of these options contain IP addresses or show Active or
Standby, the phone is not properly registered with Cisco Unified Communications
Manager. See the "Registering the Phone with Cisco Unified Communications
Manager" section on page 7-4 for tips on resolving this problem.
Resolving Startup Problems
for instructions.
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