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Introducing Cisco Small Business Analog Telephone Adapters
ATA Soft ware Features
ATA Administration Guide 33
1
Register Retry
Enhancements
The Register Retry Enhancements feature for SPA2102,
SPA3102, and PAP2T devices adds flexibility to the delay
timers that are activated when the SIP REGISTER of a
device fails. Once a SIP REGISTER failure response code
is sent, a delay timer is selected depending on the type of
registration failure response code. The delay timers can
be one of the following:
• Reg Retry Random Delay—Random delay range (in
seconds) to add to the
Register Retry Intvl
parameter when
retrying a SIP REGISTER after a failure. The default is 0,
which disables this feature.
• Reg Retry Long Random Delay—Random delay range (in
seconds) to add to the
Register Retry Long Intvl
parameter
when retrying a SIP REGISTER after a failure. The default is
0, which disables this feature.
• Reg Retry Intvl Cap—The maximum value to cap the
exponential back-off retry delay. The exponential back-off
retry delay starts with the setting found in the
Register Retry
Intvl
parameter and doubles it on every REGISTER retry after
a failure. In other words, the retry interval after a failure is
always set to the seconds configured in the
Register Retry
Intvl
parameter. If this feature is enabled, the
Reg Retry
Random Delay
setting is added on top of the exponential
back-off adjusted delay value. The default value is 0, which
disables the exponential back-off feature.
Register Retry is configured in the SIP tab. See “ATA Voice
Field Reference,” on page121.
Feature Description