Linksys SPA922 Cisco Small Business IP Phone SPA9X1 Administration Guide - Page 116
SIP Timer Values (sec), Reg Retry Long Intvl
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Chapter 5 Linksys IP Phone Field Reference SIP Timer Values (sec) SIP Tab Note None of the following parameters apply to the SPA901. Field SIP T1 SIP T2 SIP T4 SIP Timer B SIP Timer F SIP Timer H SIP Timer D SIP Timer J INVITE Expires ReINVITE Expires Reg Min Expires Reg Max Expires Reg Retry Intvl Reg Retry Long Intvl Description RFC 3261 T1 value (RTT estimate), which can range from 0 to 64 seconds. Defaults to .5 seconds. RFC 3261 T2 value (maximum retransmit interval for non-INVITE requests and INVITE responses), which can range from 0 to 64 seconds. Defaults to 4 seconds. RFC 3261 T4 value (maximum duration a message remains in the network), which can range from 0 to 64 seconds. Defaults to 5 seconds. INVITE time-out value, which can range from 0 to 64 seconds. Defaults to 16 seconds. Non-INVITE time-out value, which can range from 0 to 64 seconds.Defaults to 16 seconds. INVITE final response, time-out value, which can range from 0 to 64 seconds.Defaults to 16 seconds. ACK hang-around time, which can range from 0 to 64 seconds. Defaults to 16 seconds. Non-INVITE response hang-around time, which can range from 0 to 64 seconds. Defaults to 16 seconds. INVITE request Expires header value. If you enter 0, the Expires header is not included in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 240. ReINVITE request Expires header value. If you enter 0, the Expires header is not included in the request. Ranges from 0 to 19999999999999999999999999999999. Defaults to 30. 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. Defaults to 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. Defaults to 7200. Interval to wait before the Linksys IP phone retries registration after failing during the last registration. Defaults to 30. When registration fails with a SIP response code that does not match, the Linksys IP phone waits for the specified length of time before retrying. If this interval is 0, the Linksys IP phone stops trying. This value should be much larger than the Reg Retry Intvl value, which should not be 0. Defaults to 1200. Firmware Version 5.1 Linksys IP Phone Administrator Guide 5-11