Cisco SPA525G Administration Guide - Page 154

8 Configuring Regional Parameters and Supplementary Services Control Timer Values (sec) Control Timer Values (sec) Control Timer Value Notes The following table describes all control timer parameters. Each value is displayed in seconds. Field Reorder Delay Call Back Expires Call Back Retry Intvl Call Back Delay Description Delay after far end hangs up before reorder tone is played. 0 = plays immediately, inf = never plays. Range: 0-255 seconds. Defaults to 5. Expiration time in seconds of a call back activation. Range: 0- 65535 seconds. Defaults to 1800. Call back retry interval in seconds. Range: 0-255 seconds. Defaults to 30. 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 IP phone still considers the call as failed and keeps on retrying. Defaults to 0.5. 152 Cisco SPA and Wireless IP Administration Phone Guide