Cisco WIP310 - iPhone Wireless VoIP Phone, Administration Manual

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Configuring SIP, SPCP, and NAT
Configuring SIP
Cisco SPA500 Series and WIP310 IP Phone Administration Guide 76
4
Reg Max Expires Maximum registration expiration time allowed from the proxy in
the Min-Expires header. If the value is greater than this setting, the
maximum value is used.
Defaults to 7200 seconds.
Reg Retry Intvl
(see Note below)
Interval to wait before the Cisco IP phone retries registration after
failing during the previous registration. Do not enter 0. Defaults to
30 seconds.
Reg Retry Long
Intvl
(see Note below)
When registration fails with a SIP response code that does not
match the Retry Reg response status code (RSC) value (see next
table), the SPA9000 waits for this length of time before retrying.
If this interval is 0, the Cisco IP phone stops trying. This value
should be much larger than the Reg Retry Intvl value. Defaults to
1200 seconds.
Reg Retry Random
Delay Random delay added to the Register Retry Intvl value when
retrying 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 Random delay add ed to Register Retry Long Intvl value when
retrying REGISTER after a failure.
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.
NOTE Not applicable to WIP310.
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.
NOTE Not applicable to WIP310.
Sub Min Expires The lower limit of the REGISTER (subscribe) expires value
returned from the proxy server.
Defaults to 10 seconds.
Parameter Description