Linksys SPA942 Response Status Code Handling, added to the short timer, Setting SIP Parameters

Setting SIP Parameters

Response Status Code Handling

Parameter	Description
Reg Retry Random	Random delay added to the Register Retry Intvl value when retrying
Delay	REGISTER after a failure. Minimum and maximum random delay to be
	added to the short timer.
	Defaults to 0, which disables this feature.
Reg Retry Long	Random delay add ed to Register Retry Long Intvl value when retrying
Random Delay	REGISTER after a failure. Reg_Retry_Long_Random_Delay—
	Minimum and maximum random delay to be added to the long
	timer. Random delay range (in seconds) to add to the Register Retry
	Long Intvl when retrying REGISTER after a failure.
	Defaults to 0, which disables this feature.
Reg Retry Intvl Cap	Reg_Retry_Intvl_Cap—Maximum value of the exponential delay. The
	maximum value to cap the exponential backoff retry delay (which starts at
	the Register Retry Intvl and doubles every retry).
	Defaults to 0, which disables the exponential backoff feature (that is, the
	error retry interval is always at the Register Retry Intvl). If this feature is
	enabled, the Reg Retry Random Delay is added on top of the exponential
	backoff delay value.
Sub Min Expires	The lower limit of the REGISTER (suscribe) expires value returned from the
	proxy server.
	Defaults to 10 seconds.
Sub Max Expires	The upper limit of the REGISTER (subscribe) min-expires value returned
	from the proxy server in the Min-Expires header.
	Defaults to 7200 seconds.
Sub Retry Intvl	The retry interval when the last Subscribe request fails.
	Defaults to 10 seconds.

NOTE: SPA9x2 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.

Response Status Code Handling

Linksys SPA9x2 Phone Administration Guide 50