Cisco SPA112 Administration Manual page 55

Configuring the Voice Settings
SIP
Cisco SPA100Series Administration Guide
Field
Reg Min Expires
Reg Max Expires
Reg Retry Intvl
Reg Retry Long
Intvl
Reg Retry Random
Delay
Reg Retry Long
Random Delay
Reg Retry Intvl
Cap
Description
Minimum registration expiration time allowed from the
proxy in the Expires header or as a Contact header
parameter. If the proxy returns a value less than this
setting, the minimum value is used.
Default setting: 1
Maximum registration expiration time allowed from the
proxy in the Min-Expires header. If the value is larger than
this setting, the maximum value is used.
Default setting: 7200
Interval to wait before the ATA retries registration after
failing during the last registration.
Default setting: 30
When registration fails with a SIP response code that
does not match Retry Reg RSC, the ATA waits for the
specified length of time before retrying. If this interval is 0,
the ATA stops trying. This value should be much larger
than the Reg Retry Intvl value, which should not be 0.
Default setting: 1200
Random delay range (in seconds) to add to Register Retry
Intvl when retrying REGISTER after a failure.
Default setting: 0 (disabled)
Random delay range (in seconds) to add to Register Retry
Long Intvl when retrying REGISTER after a failure.
Default setting: 0 (disabled)
The maximum value to cap the exponential back-off retry
delay (which starts at Register Retry Intvl and doubles on
every REGISTER retry after a failure) In other words, the
retry interval is always at Register Retry Intvl seconds
after a failure. If this feature is enabled, Reg Retry Random
Delay is added on top of the exponential back-off adjusted
delay value.
Default setting: 0, which disables the exponential backoff
feature.
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