Linksys SPA-841 Cisco SPA9000 Voice System Administration Guide - Page 208

SPA9000 Field Reference Voice tab B Reg Retry Long Random Random delay range (in seconds) to add to when retrying REGSITER after a failure. Reg Retry Intvl Cap Default: 0 (disabled) The maximum value to cap the exponential back-off retry delay (which starts at and doubles on every REGISTER retry after a failure). In other words, the retry interval is always at seconds after a failure. If this feature is enabled, is added on top of the exponential back-off adjusted delay value. Default: 0 (disables the exponential back-off feature) Voice tab > SIP page Response Status Code Handling section The RSC handling defines the behavior of the user audio tones played under specific conditions signaled by the network, such as congestion, queuing, etc. The default settings (blank) are adequate is most circumstances. NOTE These settings need to be compatible with the ITSP network settings. The ITSP you use will inform you about any specific setting you need to modify on these areas. These parameters have impact on the signaling and audio reliability. SIT1 RSC SIT2 RSC SIT3 RSC SIT4 RSC Try Backup RSC Retry Reg 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. SIP response status code to INVITE on which to play the SIT2 Tone. SIP response status code to INVITE on which to play the SIT3 Tone. SIP response status code to INVITE on which to play the SIT4 Tone. SIP response code that retries a backup server for the current request. Interval to wait before the SPA9000 retries registration after failing during the last registration. SPA9000 Voice System Administration Guide 206