Cisco 521SG Administration Guide - Page 180
Control Timer Values (sec), Configuring Regional Parameters and Supplementary Services, Field
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Configuring Regional Parameters and Supplementary Services Control Timer Values (sec) 7 Control Timer Values (sec) The table describes Control Timer parameters. Field Description Reorder Delay Delay after far end hangs up before reorder (busy) tone is played. Ranges from 0 to 255 seconds. 0 = play immediately inf = never play 255 = return the phone immediately to on-hook status and do not play the tone. Defaults to 5. Call Back Expires Expiration time of a call back activation request. Ranges from 0 to 65535 seconds. Defaults to 1800. Call Back Retry Intvl The interval between call back retry requests. Ranges from 0 to 255 seconds. Defaults to 30. Call Back Delay Delay after receiving the first SIP 18x response before declaring the remote end is ringing. If a busy response is received during this time, the Cisco SPA IP phones still consider the call as failed and continues to retry. Defaults to 0.5. Interdigit Long Timer Long timeout between entering digits when dialing. The interdigit timer values are used as defaults when dialing. The Interdigit Long Timer is used after any one digit, if all valid matching sequences in the dial plan are incomplete as dialed. Ranges from 0 to 64 seconds. Setting this value high can result in a longer post dialing delay (PDD), which is the time between the start of a call and the time the phone starts ringing. A value that is too low can result in dialed digits not being correctly recognized. Defaults to 10. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 179