264 CHAPTER 5: S YSTEM CONFIGURATIONRinging Patterns You can set system-wide ringing patterns to distinguish between internaland external calls. You can choose one, two, or three rings to distinguishbetween internal and external calls.Do not confuse ringing patterns with ringer tones, which NBX systemusers can set for their telephones using NBX NetSet. For information onsetting a user’s ringing tones, see the NBX Telephone Guide or the UserHelp.To set ringing patterns1 Log on to the NBX NetSet utility using the administrator login ID andpassword.2 Click System Configuration > System Settings > Ringing Patterns. See theHelp for instructions.Conference Timeout The length of time before a conference attempt isabandoned. Applies to a blind (unannounced) conferenceonly. The timeout takes effect under these conditions:■ Two people, A and B, are involved in a call and one ofthem attempts to blind conference another person, C.■ C does not answer and C’s voice mail does not pick upthe call.After the Conference Timeout period, the system stopsringing C’s telephone, stops attempting to conferencewith C, and reverts to the call between A and B.Transfer Timeout The length of time that a transferred call attempts thetransfer before it rings back to the caller’s extension.TAPI Line RedirectTimeoutThe length of time before a call redirected from a TAPIroute point by an external application goes back to itsoriginal destination. After two failures, the call goes to theTAPI route point’s call coverage option. For moreinformation, see “TAPI Route Points” on page 229 .Table 37 System Timers Fields (continued)Field Purpose