Registering The Phone With Cisco Unified Communications Manager; Symptom: Cisco Unified Ip Phone Unable To Obtain Ip Address; Cisco Unified Ip Phone Resets Unexpectedly - Cisco 7975G Software Manual
Administration guide for cisco unified communications manager 7.0 (sccp and sip)
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- Software manual (302 pages) ,
- Administration manual (217 pages) ,
- Troubleshooting and maintenance (25 pages)
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Cisco Unified IP Phone Resets Unexpectedly
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Registering the Phone with Cisco Unified Communications Manager
A Cisco Unified IP Phone can register with a Cisco Unified Communications Manager server only if the
phone has been added to the server or if auto-registration is enabled. Review the information and
procedures in the
page 2-8
database.
To verify that the phone is in the Cisco Unified Communications Manager database, choose Device >
Phone > Find from Cisco Unified Communications Manager Administration to search for the phone
based on its MAC Address. For information about determining a MAC address, see the
the MAC Address of a Cisco Unified IP Phone" section on page
If the phone is already in the Cisco Unified Communications Manager database, its configuration file
may be damaged. See the
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address
If a phone is unable to obtain an IP address when it starts up, the phone may be not be on the same
network or VLAN as the DHCP server, or the switch port to which the phone is connected may be
disabled.
Make sure that the network or VLAN to which the phone is connected has access to the DHCP server,
and make sure that the switch port is enabled.
Cisco Unified IP Phone Resets Unexpectedly
If users report that their phones are resetting during calls or while idle on their desk, you should
investigate the cause. If the network connection and Cisco Unified Communications Manager
connection are stable, a Cisco Unified IP Phone should not reset on its own.
Typically, a phone resets if it has problems connecting to the Ethernet network or to
Cisco Unified Communications Manager. These sections can help you identify the cause of a phone
resetting in your network:
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Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP and SIP)
9-6
Changing the buttons on a phone button template, or assigning a different phone button template to
a phone, may result in directory numbers that are no longer accessible from the phone. The directory
numbers are still assigned to the phone in the Cisco Unified Communications Manager database, but
there is no button on the phone with which calls can be answered. These directory numbers should
be removed from the phone and deleted if necessary.
"Adding Phones to the Cisco Unified Communications Manager Database" section on
to ensure that the phone has been added to the Cisco Unified Communications Manager
"Creating a New Configuration File" section on page 9-5
Verifying Physical Connection, page 9-7
Identifying Intermittent Network Outages, page 9-7
Verifying DHCP Settings, page 9-7
Checking Static IP Address Settings, page 9-7
Verifying Voice VLAN Configuration, page 9-7
Chapter 9
Troubleshooting and Maintenance
"Determining
2-13.
for assistance.
OL-15790-01
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Troubleshooting
