Refresh Interval:

Time interval in seconds at which data details should be refreshed

Example: Select '10 sec' in this field for example and click the 'Update' button

Field Type: Select box

Protocol:

Filter the data based on the protocol type (ALL, SIP, IAX)

Example: Select 'ALL' for example, and click the 'Sort' button to display both SIP and IAX extensions

Field Type: Select box

Status:

Sort extensions based on their network status (ALL, Online, Offline)

Example: Select 'Online' for example, and click the 'Sort' button to display extensions that are registered/online only

Field Type: Select box

Letter:

Sort extensions based on the user name they belong to

Example: Select 'B' for example, and click the 'Sort' button to display extensions that belong to users whose names start with letter B (e.g. Brown James)

Field Type: Select box