Configuring SIP, SPCP, and NAT
Configuring SIP
96 Cisco SPA and Wireless IP Phone Administration Guide
5
Configuring Response Status Code Handling
To configure response status code handling:
STEP 1 Log in to the web administration interface.
STEP 2 Click Admin Login and advanced.
STEP 3 Click the SIP tab.
STEP 4 Under Response Status Code Handling, configure the following:
• SIT1 through SIT4 RSC
—
SIP response status code for the appropriate
Special Information Tone (SIT). For example, if you set the SIT1 RSC to 404,
when the user makes a call and a failure code of 404 is returned, the SIT1
tone is played. Reorder or Busy Tone is played by default for all
unsuccessful response status code for SIT 1 RSC through SIT 4 RSC.
Defaults to blank.
• Tr y Backup RSC—SIP response code that retries a backup server for the
current request. Defaults to blank.
• Retry Reg RSC—Interval the SPA9000 waits before re-trying registration
after a failed registration. Defaults to blank.
STEP 5 Click Submit All Changes.
NOTE: Cisco IP phones can use a RETRY-
AFTER value when received from a SIP proxy
server that is too busy to process a request
(503 Service Unavailable message). If the
response message includes a RETRY-AFTER
header, the phone waits for the specified length
of time before retrying to REGISTER again. If a
RETRY-AFTER header is not present, the phone
waits for the value specified in the
Reg Retry
Interval
or the
Reg Retry Long Interval
parameter.
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