Cisco 7800 Series Administration Manual page 56

SIP and NAT Configuration
<ExecuteItem Priority="0" URL="http://xmlserver.com/event.xml"/>
</CiscoIPPhoneExecute>
Authentication:
challenge
":" MD5(A2) )
where A1 = username ":" realm ":" passwd
and A2 = Method ":" digest-uri
SIP Configuration
SIP settings for the Cisco IP Phone are configured for the phone in general and for the extensions.
Configure the Basic SIP Parameters
Procedure
Step 1
In the phone web user interface, navigate to Admin Login > advanced > Voice > SIP.
Step 2 In the SIP Parameters section, set the SIP parameters.
Step 3 Click Submit All Changes.
Configure the SIP Timer Values
Procedure
Step 1 In the phone web user interface, navigate to Admin Login > advanced > Voice > SIP.
Step 2
In the SIP Timer Values section, set the SIP timer values in seconds.
Step 3 Click Submit All Changes.
Configure the Response Status Code Handling
Procedure
Step 1 In the phone web user interface, navigate to Admin Login > advanced > Voice > SIP.
Step 2 In the Response Status Code Handling section, set the values as specified:
• Try Backup RSC—SIP response code that retries a backup server for the current request. Defaults to
blank.
• Retry Reg RSC—SIP response code that the phone retries registration after failing during the last
registration. Defaults to blank.
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
42
= MD5( MD5(A1) ":" nonce ":" nc-value ":" cnonce ":" qop-value