Configure The Challenge For Sip Invite Messages - Cisco 8800 Series Manual

Configure the Challenge for SIP INVITE Messages

Network Standard
DHCP option 56
DHCP option 60
DHCP option 66
DHCP option 125
DHCP option 150
DHCP option 159
DHCP option 160
Configure the Challenge for SIP INVITE Messages
You can set up the phone to challenge the SIP INVITE (initial) message in a session. The challenge restricts
the SIP servers that are permitted to interact with devices on a service provider network. This practice prevents
malicious attacks against the phone. When you enable this feature, authorization is required for initial incoming
INVITE requests from the SIP proxy.
You can also configure the parameters in the phone configuration file with XML(cfg.xml) code.
Before you begin
Access the Phone Web Interface, on page
Procedure
Step 1 Select Voice > Ext(n), where n is an extension number.
Step 2 In the SIP Settings section, select Yes from the Auth INVITE list to enable this feature or select No to disable
it.
You can configure this parameter in the phone configuration XML file (cfg.xml) by entering a string in this
format:
<Auth_INVITE_1>Yes</Auth_INVITE_1_>
Default: No.
Step 3
Click Submit All Changes.
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
120
Description
NTP server
NTP server configuration with IPv6
Vendor class identifier
TFTP server name
Vendor-identifying vendor-specific information
Can be used for TR.69 Auto Configurations Server
(ACS) discovery.
TFTP server
Provisioning server IP
Provisioning URL
104.
Cisco IP Phone Configuration