Caller display displays details about the caller and the number that they called. On internal calls the IP Office provides this information. On external calls it uses the Incoming Caller Line Identification (ICLID) received with the call. The number is also passed to IP Office applications and can be used for features such as call logging, missed calls and to make return calls.
Analog extension can be configured for caller display via the IP Office configuration (Extension | Extn | Caller Display Type).
Adding the Dialing Prefix
Some IP Office systems are configured to require a dialing prefix in front of external numbers when making outgoing calls. When this is the case, the same prefix must be added to the ICLID received to ensure that it can be used for return calls. The prefix to add is specified through the Prefix field of each line.
Directory Name Matching
The IP Office configuration contains a directory of names and numbers. If the ICLID of an incoming call matches a number in the directory, the directory name is associated with that call and displayed on suitable receiving phones.
Note: Caller ID can not be forwarded
If an extension is forwarded or transferred to another extension, the Caller ID of the forwarding extension is received, not the Caller ID of the original call.
Extended Length Name Display
In some locales, it may be desirable to change the way names are displayed on phones in order to maximize the space available for the called or calling name. There are two hidden controls which can be used to alter the way the IP Office displays calling and called information.
These controls are activated by entering special strings on the Source Numbers tab of the NoUser user. These strings are:
This setting has the following effects:
On DS phones, the call status display is moved to allow the called/calling name to occupy the complete upper line and if necessary wrap-over to the second line.
For all phone types:
On incoming calls, only the calling name is displayed. This applies even to calls forwarded from another user.
On outgoing calls, only the called name is displayed.
This settings hides the display of the call state, for example CONN when a call is connected. This option is typically used in conjunction with LONGER_NAMES above to provide additional space for name display.