Linksys WIP310 SPA500 Series and WIP310 IP Phone Administration Guide - Page 163

Configuring Regional Parameters and Supplementary Services Control Timer Values (sec) 7 • Number of Segments = 4 • Segment 1: On=0.2s, Off=0.2s • Segment 2: On=0.2s, Off=0.2s • Segment 3: On=0.2s, Off=0.2s • Segment 4: On=1.0s, Off=4.0s • Total Ring Length=60s Control Timer Values (sec) 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. Cisco SPA 500 Series and WIP310 IP Phone Administration Guide 152