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5-13
Linksys IP Phone Administrator Guide
Firmware Version 5.1
Chapter 5 Linksys IP Phone Field Reference
SIP Tab
Response Status Code Handling
RTP Parameters
Field Description
SIT1 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.
Defaults to blank.
SIT2 RSC SIP response status code to INVITE on which to play the SIT2 Tone.
Defaults to blank.
SIT3 RSC SIP response status code to INVITE on which to play the SIT3 Tone.
Defaults to blank.
SIT4 RSC SIP response status code to INVITE on which to play the SIT4 Tone.
Defaults to blank.
Try Backup RSC
(not applicable to SPA901)
SIP response code that retries a backup server for the current request.
Defaults to blank.
Retry Reg RSC
(not applicable to SPA901)
Interval to wait before the Linksys IP phone retries registration after failing during the last
registration.
Defaults to blank.
Field Description
RTP Port Min Minimum port number for RTP transmission and reception. <RTP Port Min> and <RTP
Port Max> should define a range that contains at least 4 even number ports, such as 100 – 106.
Defaults to 16384.
RTP Port Max Maximum port number for RTP transmission and reception.
Defaults to 16482.
RTP Packet SizeSPA901
(not applicable to SPA901)
Packet size in seconds, which can range from 0.01 to 0.16. Valid values must be a multiple
of 0.01 seconds.
Defaults to 0.030.
Max RTP ICMP Err
(not applicable to SPA901)
Number of successive ICMP errors allowed when transmitting RTP packets to the peer
before the Linksys IP phone terminates the call. If value is set to 0, the Linksys IP phone
ignores the limit on ICMP errors.
Defaults to 0.