UNIVERGE SV8100 Issue 5.0Caller ID 2 - 225Caller IDDescriptionCaller ID allows a display terminal to show an incoming caller’s telephone number (called the DirectoryNumber or DN) and optional name. The Caller ID information is available as pre-answer display. Withthe pre-answer display, the user previews the caller’s number before picking up the ringing line. On the CD-CP00-US for Caller ID (also used for DTMF receivers and Call Progress Tone Detection) 32 resources areavailable. The PZ-BS10 provides an additional 64 resources.Second Call DisplayWhile busy on a call, the telephone display can show the identity of an incoming trunk or Intercom call.For incoming trunk calls, the display shows the Caller ID or ANI data or the trunk name if Caller ID or ANIare not installed. (Refer to T1 Trunking (with ANI/DNIS Compatibility) on page 2-1329 for moreinformation on ANI compatibility.) For incoming Intercom calls, the display shows the calling extensionname.Caller ID supports the Telco Called Number Identification (CNI) and Called Number Delivery (CND)service, when available. These services provide the Caller ID information (i.e., messages) between thefirst and second ring burst of an incoming call. Two types of Caller ID message formats are currentlyavailable: Single Message Format and Multiple Message Format. With Single Message Format, theTelco sends only the caller’s telephone number (DN). The DN has seven or 10 digits. In MultipleMessage Format, the Telco sends the DN and the caller’s name. The DN for this format also has sevenor 10 digits, and the name provided consists of up to 15 ASCII characters.The telephone display can show up to 12 Caller ID digits (for non-ACD calls).Once installed and programmed, Caller ID is enabled for all trunk calls, including: Ring Group calls Calls transferred from another extension Calls transferred from the VRS Calls transferred from Voice Mail (unscreened) Direct Inward Lines (DILs)EnhancementsPressing the Left Cursor Key twice (on equipped terminals) displays the Incoming Call History(Version 3000 or higher software).