Understanding The Phone Startup Process - Cisco 6901 Administration Manual

Understanding the Phone Startup Process

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If auto registration is not enabled and the phone is not added to the Cisco Unified Communications
Manager database, the phone registration request is rejected.
If the phone registers and works in encrypted mode, the phone accesses the configuration file named
SEPmac_address.cnf.xml.enc.sgn. If the SEPmac_address.cnf.xml.enc.sgn does not exist on the TFTP
server, the phone requests the file SEPmac_address.cnf.xml.sgn. That is, if the phone works in encrypted
mode with TFTP Encrypted Config selected, the phone accesses the configuration file named
SEPMac_addr.cnf.xml.enc.sgn. If the phone works in encrypted mode with TFTP Encrypted Config not
selected, the phone accesses the file SEPMac_addr.cnf.xml.sgn. To enable TFTP Encrypted
Configuration, select the TFTP Encrypted Config check box in the Phone Security Profile
Configuration page. You can access this page from the Cisco Unified Communications Manager by
selecting System > Security> Phone Security Profile and clicking Add New.
For SIP phones, the TFTP server generates these SIP configuration files:
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The filenames are derived from the MAC address and description fields in the Phone Configuration
window of Cisco Unified Communications Manager. The MAC address uniquely identifies the phone.
For more information on phone configuration settings, go to the
chapter in the Cisco Communications Manager Administration Guide.
Understanding the Phone Startup Process
When connecting to the VoIP network, the Cisco Unified IP Phone 6901 and 6911 go through a standard
startup process that is described in
of these steps may occur on your Cisco Unified IP Phone.
Table 2-3 Cisco Unified IP Phone Startup Process
Task Purpose
1. Obtaining Power from the Switch
If a phone is not using external power, the switch provides in-line power
through the Ethernet cable attached to the phone.
Configuring VLAN
2.
If the Cisco Unified IP Phone is connected to a Cisco Catalyst switch, the
switch next informs the phone of the voice VLAN defined on the switch.
The phone needs to know its VLAN membership before it can proceed with
the Dynamic Host Configuration Protocol (DHCP) request for an IP address.
Cisco Unified IP Phone 6901 and 6911 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
2-6
You have enabled autoregistration in Cisco Unified Communications Manager
The phone has not been added to the Cisco Unified Communications Manager database
The phone is registering for the first time
SIP IP Phone:
– For unsigned and unencrypted files—SEP<mac>.cnf.xml
– For signed files—SEP<mac>.cnf.xml.sgn
For signed and encrypted files—SEP<mac>.cnf.xml.enc.sgn
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Dial Plan—<dialplan>.xml
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Table 2-3. Depending on your specific network configuration, not all
Cisco Unified IP Phone Configuration
Related Topics
• Adding Phones to the Cisco
Unified Communications
Manager Database, page
Resolving Startup Problems,
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page 7-1.
Configuring Settings on the
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Cisco Unified IP Phone,
page 4-1.
Resolving Startup Problems,
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page 7-1.
2-7.
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